TW200809279A - Protective film for polarizing plate - Google Patents

Abstract

The present invention provides a protective film for polarizing plate which is suitably used as a protective film of polarizing film capable of maintaining a high display quality of liquid crystal display device for a long time, and provides a polarizing plate. The said protective film for polarizing plate characterizes in forming a coating layer on one side of a transparent support film made from a kind of cellulose acylate in which the coating layer has a polymer comprising a repeating unit derived from a chlorine containing vinyl monomer, and having a vapor permeability of less than 300 g/m2. day at 60 DEG C, 95% RH.

Description

[Technical Field] The present invention relates to a protective film for a polarizing plate having a coating layer on a transparent base film. [Prior Art]

Recently, the liquid crystal display device (hereinafter referred to as LCD) has been gradually replaced by a CRT because of its thinness, light weight, and low power consumption. With the popularity of LCDs, the demand for polarizers has increased. Its field of use has also gradually expanded from small products such as conventional calculators and electronic clocks to large-scale products such as automobile instruments, PC monitors, and televisions. The display device is often used for a long period of time, and a polarizing plate has been required to be used for a long period of time in an environment where temperature and humidity are changed, and the image quality of the LCD is not deteriorated. The polarizing plate is generally applied to both sides or one side of a polarizing film having a polarizing ability, and a protective film for a polarizing plate (hereinafter referred to as a protective layer) is bonded to the adhesive layer. The polarizing film raw material is mainly made of polyvinyl alcohol (hereinafter referred to as PVA), and the PVA film is uniaxially stretched, dyed with iodine or a dichroic dye, or stretched after dyeing, and further crosslinked with an iodine compound to form a polarizing film. Because of its optical transparency, low birefringence, smooth surface, etc., the protective layer is mainly made of cellulose triacetate (hereinafter referred to as TAC). However, when cellulose triacetate is used as a protective layer, the size of the polarizing film changes due to changes in temperature and humidity during long-term use, and sometimes the display image is abnormal, which needs to be improved. As a technique for solving these problems, there is a report that a ruthenium-based resin sheet is used as a protective film (protective layer) of a polarizing film (Patent Document 1). However, the decylene-based resin sheet has a very low moisture permeability and is not easily changed by humidity, but has insufficient adhesion to the polarizing film and has a problem of low productivity. And used, the surface of the cellulose triacetate film is provided with vinylidene chloride copolymer 200809279, polyvinyl alcohol, ethylene polyvinyl alcohol copolymer, resin component dispersed with inorganic layered compound, vermiculite composition, other hydrophobic Report of a protective film of a layer of a compound or the like.

The use of a protective film provided with a layer containing a copolymer of dichloroethylene to enhance the moist heat of the polarizing plate has also been reported (Patent Documents 2 and 3). However, Patent Documents 2 and 3 do not have a description of the moisture permeability, and the raw materials and film thicknesses described in the patents have a sufficient effect of reducing the moisture permeability of the object of the present invention. Further, since the surface hardness is low, it is necessary to be hard-coated, and the description of the hard coating is insufficient, and the problem of the surface shape and adhesion when the hard coating layer is applied on the vinylidene layer is not found. . In general, the dichloroethylene copolymer has a problem of being easily colored by ultraviolet rays. A protective film containing a layer of a vinylidene chloride copolymer on the surface of the cellulose triacetate film, which is bonded to the polarizing film on the opposite side of the copolymer layer containing the vinylidene chloride, can be used in a productivity by using a conventional bonding method. Adhesiveness is suitable, and there is a problem of coloring due to direct ultraviolet rays. The solution to the coloring problem under this structure has not been proposed. When the dichloroethylene ethylene copolymer is burned at a low temperature, it causes an environmental problem of dioxin. Based on the above, there is a strong demand for a coating layer other than dichloroethylene. In other documents, a layer in which an inorganic layered compound is dispersed in a resin layer component composed of a vinyl alcohol polymer is used as an adhesive to improve the moist heat of the polarizing plate (Patent Document 4). However, at this time, since the adhesive must be applied at about 1 to 5 // m, the drying of the polarizing plate takes time and the productivity is low. Further, this patent document does not describe the degree of water vapor transmission, and it is known that a vinyl alcohol-based polymer can increase the crystallinity of a resin by drying at a high temperature, so that moisture resistance and water resistance increase, as in the patent document, When the layer in which the inorganic layered compound is dispersed in the resin layer component of the polymer is used as an adhesive, it is limited to the heat resistance of the polarizer, and the problem of not being able to dry the resin layer at a sufficiently high temperature is not achieved by the present invention. The high-order moisture permeability is already conceivable. Patent Document 5 proposes to use a polarizing plate protective film having a layer formed by coating a solvent solution of a hydrophilic polymer compound in advance, thereby improving the adhesion between the polarizer and the polarizing plate protective film, and improving the productivity in processing the polarizing plate. However, at this time, the productivity is improved, and the film thickness of the moisture permeable member which achieves the object of the present invention is insufficient, and the moisture permeability to the extent required by the present invention cannot be achieved.

Other patent documents include a report of a barrier film having a vermiculite coating film (Patent Document 6). However, Patent Document 6 does not describe coating on a cellulose triacetate film, and the biaxially stretched PP film used in the examples of the patent cannot be directly bonded to a polarizing plate. There is no description of the means for improving the adhesion of the vermiculite coating film on the cellulose triacetate film, and there is no hard coating property required for the viewer-side polarizing plate protective film to be used as a display. The coating property at the time of the layer (under the hard coat layer) and the means for improving the adhesion between the layers are described. Further, a protective film having a vermiculite coating film is used to improve the moist heat of the polarizing plate (Patent Document 7). However, Patent Document 7 does not describe the moisture permeability, and does not describe a means for improving the adhesion of the vermiculite coating film on the cellulose triacetate film, and the hard coating property is in the vermiculite system. The coating layer has been given a hard coat property, and thus the moisture permeability of the object of the present invention and the hard coat property required for use as a polarizing plate protective film on the viewer side of the display cannot be sufficiently achieved. Other patent documents use a protective film provided with a hydrophobic compound to reduce the water vapor permeability (Patent Document 8). Patent Document 8 reports that a liquid crystal polymer layer containing a thermotropic liquid crystal polymer is disposed, but is not formed on a cellulose triacetate film, and is formed by lamination with other layers instead of coating to form a film by melt film formation. Etc., it does not apply to polarizer protective film applications. Patent Document 1 Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Japanese Laid-Open Patent Publication No. Hei. No. 2000-326448. Patent Publication No. Hei. No. 2000-326. content】

OBJECTS OF THE INVENTION The object of the present invention is to provide a protective film for a polarizing plate which is suitable for use as a protective film for a polarizing film in which the display image quality of a display such as a liquid crystal display device can be maintained for a long time. Means for Solving the Problem As a result of intensive investigation, the present inventors have found that the above problems can be solved by the following protective film for a polarizing plate, and the present invention has been completed. That is, the present invention (1) is characterized in that a coating layer having a low hygroscopicity is formed on at least one side of a transparent base film composed of fluorenyl cellulose, and a moisture permeability system is obtained at 60 ° C and 95% relative humidity. 00g/m2 · Protective film for polarizing plates below day. (2) The protective film for a polarizing plate according to (1), wherein the film thickness of the transparent base film is 30 to 120 // m 〇 (3) as a protective film for a polarizing plate of (1) or (2), wherein 醯The base cellulose is at least one selected from the group consisting of cellulose acetate, cellulose acetate propionate and cellulose acetate butyrate. (4) The protective film for a polarizing plate according to any one of (1) to (3), wherein the coating layer is mainly composed of an ethylene 200809279 alcohol-based polymer. (5) The protective film for a polarizing plate according to (4), wherein the vinyl alcohol-based polymer has a degree of alkalinity of 95 mol% or more. (6) The protective film for a polarizing plate according to (4) or (5), wherein the degree of polymerization of the vinyl alcohol-based polymer is 300 or more and 1700 or less.

(7) The protective film for polarizing plates according to any one of (4) to (6) wherein the vinyl alcohol-based polymer is selected from the group consisting of dialdehydes, diisocyanates, polyacrylic acids, metal complexes, and epoxy compounds. The crosslinkers of the combined groups are crosslinked. (8) The protective film for a polarizing plate according to any one of (1) to (3), wherein the coating layer contains a compound composed of alkoxysilane, and a compound having a functional group reactive with a hydroxyl group or an alkoxy group and a decane coupling At least one of the agents. (9) The protective film for a polarizing plate according to any one of (1) to (3), wherein the coating layer is mainly composed of a vermiculite formed of a coating composition containing polyazane. (10) The protective film for a polarizing plate according to any one of (1) to (3) wherein the coating layer contains a hydrophobic compound. (11) The protective film for a polarizing plate according to any one of (1) to (3), wherein the coating layer is a layer in which a resin composition composed of a saccharide and a compound containing a fluorenyl group is laminated. (12) The protective film for a polarizing plate according to any one of (1) to (3), wherein the coating layer is composed of an amine group-containing polymer compound and an amino group-containing reactive functional group-containing decyl alcohol-containing organic decane compound A layer in which the resin composition is laminated. (13) The protective film for a polarizing plate according to any one of (1) to (12) wherein the coating layer contains an inorganic layered compound having a particle diameter of 0.1 to 10 m. (14) The protective film for a polarizing plate according to (13), wherein the inorganic layered compound has a particle diameter of 1 to 5 μm. (15) The protective film for a polarizing plate according to (13) or (14), wherein the content of the inorganic layered compound 200809279 is 15 to 60% by weight. (16) The protective film for a polarizing plate according to (15) wherein the content of the inorganic layered compound is 25 to 50% by weight. (17) The protective film for a polarizing plate according to any one of (1) to (16), wherein at least one of the coating layer and the opposite side of the coating layer is provided with at least a hard coating layer and an antireflection layer A layer of at least one layer of the layer.

(18) The protective film for a polarizing plate according to any one of (1) to (17) wherein the thickness of the coating layer is 0.2/zm or more and 40/m or less. (19) The protective film for a polarizing plate according to (18), wherein the thickness of the coating layer is 1 // m or more and 1 0 // m or less. (20) The protective film for a polarizing plate according to any one of (1) to (19), wherein at least one of the transparent base film and the coating layer and between the coating layer and the hard coating layer has an undercoat layer. (21) The protective film for a polarizing plate according to any one of (1) to (20), wherein at least one of a surface of the transparent substrate film and a surface of the coating layer is subjected to at least one of a corona discharge treatment and a glow discharge treatment . (22) The protective film for a polarizing plate according to any one of (1) to (21) wherein the coating layer is formed by coating a coating composition composed of at least a resin component and a coating solvent on a transparent substrate. (23) A protective film for a polarizing plate according to (22), wherein the coating solvent contains at least one solvent which swells or dissolves the transparent substrate film. (24) A polarizing plate having a polarizing film and a protective film for a polarizing plate according to any one of (1) to (23). (25) An image display device using the polarizing plate of (24). Effect of the Invention - 10, 200809279 The present invention is characterized in that a low moisture permeability coating layer is formed on one surface of a transparent base film composed of fluorenyl cellulose, and the moisture permeability at 300 ° C and 95% relative humidity is 300 g / m 2 · A protective film for polarizing plates below the day can be used to produce a polarizing plate having low moisture permeability, high degree of polarization, durability, and excellent image quality. It is not colored and has excellent adhesion to a transparent substrate. A hard-coated layer can be used as a surface protection film with a high hardness. By using the polarizing plate protective film of the present invention, the display image quality of a display such as a liquid crystal display device can be maintained for a long time.

[Embodiment] BEST MODE FOR CARRYING OUT THE INVENTION The protective film for a polarizing plate of the present invention will be described in detail below. The basic structure of a suitable embodiment of the protective film for a polarizing plate of the present invention will be described with reference to the drawings. Here, Fig. 1 is a schematic cross-sectional view showing a preferred embodiment of the protective film for a polarizing plate of the present invention, but the protective film for a polarizing plate of the present invention is not limited to this embodiment. The protective film 1 for a polarizing plate of the present invention according to Fig. 1 (1) is composed of a transparent base film 2 and a low moisture permeability coating layer 3 (hereinafter referred to as a coating layer). As shown in Fig. 1 (2), it is more preferable to provide a hard coat layer (hereinafter referred to as a hard coat layer) 4 on the coating layer 3. The hard coat layer 4 is preferably added with internal scattering properties and surface scattering properties. It is preferable to provide a low refractive index layer on the hard coat layer 4 for the purpose of lowering the surface reflectance. Between the transparent substrate film 2 and the coating layer 3, at least one of the undercoat layers between the coating layer 3 and the hard-coating layer 4 is preferred for interlayer adhesion, and the undercoat layer is composed of a plurality of layers. good. It is also preferable that any one of the undercoat layers is an antistatic layer. Fig. 1(3) is a schematic cross-sectional view showing another preferred embodiment. This state forms a hard-coated layer on the opposite side of the coating. Hard-coated layer 4 to add internal -11- 200809279

Scattering properties and surface scattering properties are preferred. It is preferable to provide a low refractive index layer on the hard coat layer 4 for the purpose of lowering the surface reflectance. Between the transparent substrate film 2 and the coating layer 3, at least one of the undercoat layers on the coating layer 3 is preferred for interlayer adhesion, and the undercoat layer is preferably composed of a plurality of layers. It is also preferred that either layer of the undercoat layer is an antistatic layer. When the resin component of the coating layer is a highly hydrophilic polyvinyl alcohol, an ethylene vinyl alcohol copolymer or a vermiculite coating film, the undercoat layer may not be provided on the coating layer, and it may be in the form of Fig. 1 (3). Sometimes there is no problem of adhesion between the hard-coating layer and the coating layer, and it is preferable. The polarizing plate 5 of the present invention in Fig. 2 is composed of the polarizing plate protective film 1, the polarizing member 6, and the polarizing plate protective film 7 on the reverse side of the present invention. In the case of the second embodiment (1) and (2), the polarizing plate 5 of the present invention is bonded to the polarizing member 6 on the reverse side of the coating layer 3. In the case of the second embodiment (3) and (4), the polarizing plate 5 of the present invention is bonded to the polarizing member 6 by the coating layer 3. The polarizing plate protective film 7 on the reverse side is not particularly limited, and it is preferable to use a base film composed of a ruthenium-based cellulose having no coating layer based on productivity. Fig. 3 is a schematic cross-sectional view showing a preferred embodiment of the image display device of the present invention using the polarizing plate of the present invention as a liquid crystal display device, but the image display device of the present invention is not limited to this embodiment. The video display device 8 of the present invention in Fig. 3 is composed of the polarizing plate 5 and the liquid crystal element 9 of the present invention. The polarizing plate 5 of the present invention is preferably used for both sides as in Fig. 3, and is effective on one side. The polarizing plate of the present invention is preferably such that the adhesive film 7 on the opposite side is attached to the liquid crystal element via an adhesive. The hard-coating layer can be used only for the surface of the viewer side of the image display device, and the temperature and humidity change is particularly uniform for the components to be used for both sides. In order to enhance the image visibility and improve the image quality, the hard coating layer of the polarizing plate protective film used at least on the side surface of the viewer is provided with scattering property and/or the low refractive index layer is imparted thereto -12-200809279 Preferably, based on the curl equalization, it is preferable to impart a scattering property to the hard-coating layer of the polarizing plate protective film on both sides of the image display device and/or to impart a low refractive index layer thereon. The protective film on the reverse side of the polarizing plate of the present invention may also be an optical compensation film, and the optical compensation film is preferably a substrate film on which an optical compensation layer is formed on the substrate film. It is also preferable to use an adhesive to attach an optical compensation film to the protective film on the reverse side. [covered layer]

The coating layer of the present invention is characterized in that a moisture permeability of 300 g/m 2 ·day or less at 60 ° C and 95% relative humidity is a polyvinyl alcohol, an ethylene vinyl alcohol copolymer, a resin component in which an inorganic layered compound is dispersed, The vermiculite composition, other hydrophobic compounds, and the like are described in detail below. In the moisture permeability 用于 used in the present invention, when a polarizing plate protective film having a polyvinyl alcohol, an ethylene vinyl alcohol copolymer, and a coating layer in which an inorganic layered compound is dispersed in the resin layer is used, the sulfhydryl cellulose is used. The moisture permeability of the transparent substrate film side. In general, a vinyl alcohol-based resin exhibits poor moisture resistance when directly exposed to a resin layer under high humidity, and moisture permeability from the resin layer side may not be within the range described in the present invention, and moisture permeability from the substrate film side. When the temperature is 300 g/m 2 ·day or less, the effect of improving the moisture resistance of the polarizing plate can be sufficiently exerted. 1) A resin layer composed of a vinyl alcohol polymer or a vinyl alcohol polymer composition, and a coating layer formed of a resin containing an inorganic layered compound 1-(1) a vinyl alcohol polymer constituting a coating layer There are, for example, a monomer such as polyvinyl alcohol (PVA), an ethylene-ethyl alcohol copolymer (EVOH), or the like. Further, these B-acid alcohol-based polymers may be partially modified by carbonyl modification, epoxy modification, acetophenone modification, amine modification or ammonium modification, or part thereof. A copolymer containing diacetone C13-200809279 eneamine unit or the like. Further, various vinyl alcohol polymers may be used alone or in combination of two or more. The degree of alkalinization of the polyvinyl alcohol polymer of the above polyvinyl alcohol may be selected from the range of 80 mol% or more, preferably 95 mol% or more, more preferably 99 mol% or more. The degree of polymerization based on the moisture permeability and the coating property of the vinyl alcohol-based polymer may be 200 to 5,000, preferably 300 to 30 00, preferably about 300 to 1,700. Further, the above-mentioned ethyl-vinyl alcohol copolymer may be an alkali compound of an ethylene-vinyl acetate copolymer. Specific examples of the alkali compound of the above-mentioned ethylene-vinyl acetate copolymer are obtained by copolymerizing an ethylene-vinyl acetate copolymer obtained by copolymerization of ethylene and vinyl acetate, and 'ethylene, vinyl acetate, and the like. The ethylene-vinyl acetate copolymer obtained by copolymerization of the monomer is obtained by alkalization. The material for providing the gas barrier layer is preferably such that the ethylene ratio of the ethylene-vinyl acetate copolymer in the fluorene monomer is 60 mol% or less, and the ethylene ratio exceeding 60 mol% is inferior in gas barrier properties. The ethylene-vinyl acetate copolymer is preferably one having a degree of alkalinity of the vinyl acetate component of 95% by mole or more based on the moisture permeability. Further, the ethylene-vinyl acetate copolymer is preferably treated with a peroxide or the like to lower the molecular weight, and is more preferably improved in solubility in a solvent. 1-(2) Other components In the present invention, the component of the resin composition may be a cross-linking agent of a vinyl alcohol-based polymer and a layered inorganic compound described later, and a vinyl alcohol-based polymer, thereby enhancing the coating layer. Water resistance. The crosslinking agent usable for this purpose is not particularly limited. Any conventional crosslinking agent is suitable. The crosslinking agent is, for example, a phenol resin, a melamine resin, a urea resin, a polyamine polyurea, a dimethylol urea, a di-methyltrimer -14- 200809279

Cyanamide, polyvalent epoxy compound, dialdehyde compound, polyisocyanate resin, ethyleneimine compound, polyamidoamine-based epichlorohydrin compound, activated vinyl compound, dicarbonate compound, thiol-containing compound (polycarboxylic acid) Acid polyfluorene compound), colloidal vermiculite, chromium salt, polyvalent metal salt, boric acid, phosphoric acid, polyacrylic acid, dicarboxylic acid, adipic anhydride, succinic anhydride, tetraisopropyl titanate and diisopropyloxybis ( A titanium compound such as acetonitrile acetone or titanate. Further, a coupling agent such as 3-epoxypropylmethoxymethoxysilane or a radical generating agent such as a peroxide may be used. Among these, dialdehyde, diisocyanate, polyacrylic acid, a metal complex, and an epoxy compound are preferred. Further, a catalyst or an additive may be added to promote the crosslinking reaction. The amount of the crosslinking agent to be added is preferably 0.5% by weight or more, more preferably 1% by weight or more, more preferably 2% by weight or more, based on the crosslinking agent/(vinyl alcohol polymer + crosslinking agent). When the weight ratio of the crosslinking agent to the PVA-based polymer and the crosslinking agent is less than 0.5% by weight, the effect of adding the crosslinking agent is not remarkable. Further, the weight ratio of the crosslinking agent to the PV A polymer and the crosslinking agent is preferably 50% by weight or less, more preferably 40% by weight or less, and still more preferably 30% by weight or less. If the cross-linking agent such as an aldehyde-based compound is thermally discolored to yellow, such a cross-linking agent must be reduced in amount to suppress discoloration within an allowable range. Further, in order to impart defoaming properties, a cerium emulsion, a PEO-PPO block polymer, a PEO-PBO block polymer, and an alcohol such as octanol or methanol may be added to the coating liquid. The amount of the antifoaming agent is preferably from 1 to 5% by weight of the coating liquid, and more preferably from 0.005 to 0.1%. When the amount is less than or equal to 1%, the defoaming property may be insufficient, and 5% or more. Then, the surface of the film is sometimes deteriorated. 1-(3) Formation of coating layer The coating layer of the vinyl alcohol polymer, the vinyl alcohol polymer, and the inorganic layered compound -15-200809279 can be formed on the transparent substrate film by a subsequent coating method. In this case, in order to optimize the viscosity characteristics of the coating device during film formation, a viscosity adjusting agent such as a tackifier may be added to the coating liquid to adjust the viscosity of the coating liquid. Further, based on the adhesion between the coating layer and the fluorene-based cellulose substrate, it is preferable to form a coating film on the substrate layer on the base material layer, and the productivity is lowered because the number of layers is increased. In the present invention, it is preferable to apply a pretreatment such as a hydrophilization treatment or a concavo-convex treatment to one or both sides of the base film.

Pre-treatment includes corona discharge treatment, glow discharge treatment, chromic acid treatment (wet), alkalization treatment (wet), flame treatment, hot air treatment, ozone/ultraviolet irradiation treatment, etc.; corona discharge treatment, glow discharge treatment The alkalization treatment (wet) is more preferable, and the alkalization treatment is particularly preferable. 1-(4) Thickness and haze of the coating layer The thickness of the coating layer is preferably 1 to 30/zm, more preferably about 3 to 20/zm. Further, the haze of the resin layer to be produced is preferably 50% or less, more preferably 30% or less, and still more preferably 10% or less. The internal haze is preferably 10% or less, more preferably 5% or less, and preferably 1% or less. 1-(5) The above-mentioned coating layer may be provided between the polarizer and the transparent substrate film, as shown in Fig. 2 (1), (2) or Figs. 2 (3) and (4) of the polarizing plate structure. Or, the opposite side of the polarizing member and the transparent substrate film. When the polarizing member is disposed on the opposite side of the transparent substrate film, the following adhesive layer may be provided on the resin layer to further provide a hard coating layer or the like with a vermiculite coating film. The coated coating layer used in the present invention is applied to at least one surface of a transparent base film composed of a fluorene-based cellulose, and is used as a protective film for a polarizing plate to achieve a desired moisture permeability. Must be both compact and flexible. Therefore, the hydrolyzed vermiculite film obtained by hydrolyzing and condensing only the alkoxysilane is added with a catalyst or water, and the flexibility is insufficient, which is not suitable for the present invention. The present invention is preferably a coating film using a compound composed of an alkoxysilane and a compound having a functional group reactive with a hydroxyl group or an alkoxy group and/or a decane coupling agent, and a compound composed of an alkoxysilane. It is more preferable that the compound having a hydroxyl group or an alkoxy group reactive group and the decane coupling agent are all contained.

Compound composed of 2-(1) alkoxy decane The compound of the alkoxy decane used in the present invention has, for example, those represented by the formula (1). (R2)4-nSi(ORl)n Formula (1) (wherein 1 represents a hydrogen atom, an alkyl group or a fluorenyl group, and R2 represents a hydrogen atom, an alkyl group or an aryl group. η shows the number of 2 to 4) R! The alkyl group shown may be a methyl group, an ethyl group, a propyl group or a butyl group, and the fluorenyl group may have an ethyl group, a propyl group or the like. Methyl, ethyl, propyl are preferred, and ethyl is most preferred. η is better, 3, 4 is better, 4 is best. Therefore, it is preferable to use the Siyuan Oxygen Institute, tetramethoxy decane, tetraethoxy decane, tetrapropoxy decane, and tetraethoxy oxane. The alkyl group represented by R2 in the η system 2 and 3 has an alkyl group having 1 to 18 carbon atoms, preferably 1 to 5 carbon atoms, and the aryl group may have a phenyl group or the like. 2-(2) Compound having a functional group reactive with a hydroxyl group or an alkoxy group A compound having a functional group reactive with a hydroxyl group or an alkoxy group can be used in the present invention. The monomer, the oligomer, and the polymer having a functional group reactive with a hydroxyl group or an alkoxy group are more preferably used, and if it has a functional group reactive with a hydroxyl group or an alkoxy group, it is not particularly limited. For example, a thermosetting, ionizing curable or moisture-curing resin selected from the group consisting of an acryl resin, a polyester resin, an epoxy resin, a urethane resin, and a melamine resin has a hydroxyl group - 17-200809279 Monomers, oligomers, polymers are preferred, polymers having hydroxyl groups are preferred, and ethyl alcohol polymers are, for example, polyvinyl alcohol (PVA) monomers, ethylene-ethyl alcohol copolymers (EVOH). Preferably, the polyvinyl alcohol (PVA) monomer polymer is optimal. Further, it is also possible to use a copolymer such as a diacetone acrylamide unit or the like which is partially modified with a mineral base or the like, and a part thereof. Further, the various ethyl alcohol polymers may be used singly or in combination of two or more. The ethylenic alcohol-based polymer which is suitable as a compound having a functional group reactive with a trans- or a labile group may be selected from those having a degree of alkalinity of 80 mol% or more, preferably 96 mol% or more, 98. Moore% or more is better. The degree of polymerization of the vinyl alcohol polymer is preferably from 200 to 5,000, more preferably from 400 to 5,000, more preferably from about 500 to about 3,000, based on the moisture permeability and coatability. 2-(3) decane coupling agent A decane coupling agent can be used in the present invention. The decane coupling agent is not particularly limited as long as it is a compound having an alkoxy decane at the end, and has a vinyl group, an epoxy group, a propylene group or a methyl propyl group, an amine group, a sulfhydryl group, a thiol group, a More preferably, the phthalocyanine group, the carboxyl group and the anhydride group are preferred, and those having an epoxy group, an amine group, an acryloyl group or a methacryl group are particularly preferred. The decane coupling agent having a vinyl group is preferably vinyltrichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(methoxy-methoxyethoxy)decane or the like. The decane coupling agent having an epoxy group is preferably -(3,4-epoxycyclohexyl)ethyltrimethoxy decane, /3 -(3,4-epoxycyclohexyl)ethyltriethoxy decane, r - glycidoxypropyltrimethoxy decane, r-glycidoxypropylmethyldiethoxy decane, r-glycidoxypropyltriethoxy decane, and the like. A decane coupling agent having a propylene fluorenyl group or a methacryl fluorenyl group is suitable for use in r - -18- 200809279 methacryl oxime propyl dimethyl methoxy oxime, methyl propyl propyl methoxide , r-methacryl oxime methyl dimethyl ethoxylate, methyl propyl decyl propyl triethoxy decane, and the like. Suitable decane coupling agents having an amine group are Ν-/3-(aminoethyl)-7-aminopropylmethyldimethoxydecane, Ν-/3-(aminoethyl)-r-aminopropyltrimethyl Oxygen broth, ν. /3 - (aminoethyl)-r-aminopropyl triethoxy decane, τ-aminopropyl trimethoxide, N-phenyl-r-aminopropyl trimethoxane and the like.

Those having a sulfhydryl-based affinity agent are r-mercaptopropyltrimethoxazole, r-mercaptopropyltriethoxydecane, and the like. The decane coupling agent having an isocyanate group is preferably r-isocyanatepropyltrimethoxysilane, r-isocyanatepropyltriethoxysilane or the like. In the present invention, the decane coupling agent is used at the same time as a compound having a functional group reactive with a hydroxyl group or an alkoxy group, and is crosslinked with a compound having a functional group reactive with a hydroxyl group or an alkoxy group. An epoxy group decane coupling agent is preferred. Further, in the present invention, a decane coupling agent is sometimes used together with a compound having a functional group reactive with a hydroxyl group or an alkoxy group, and an alkoxysilane-based dehydration polymerization reaction rate is increased to use an amine-based decane. A coupling agent is preferred. Further, in the present invention, it is preferable to provide a hard coat layer on the coating layer, and it is preferable to use a decane coupling agent having a methacrylonitrile group in order to improve adhesion between the layers having a hard coat layer. A further preferred aspect of the decane coupling agent useful in the present invention is a decane coupling agent having an alkoxysilane at both ends. The decane coupling agent having an alkoxydecane at both ends is preferred because it can be crosslinked with a compound composed of alkoxy decane. Preferred compounds are, for example, the two-terminal functional decane monomer having an organic chain as described in JP-A-2000-326448. Wait. -19· 200809279 A partial condensate of a decane coupling agent hydrolyzate or a decane coupling agent hydrolyzate is also suitable for use in the present invention. The decane coupling agent in the present invention comprises a hydrolyzate of a decane coupling agent and a partial condensate of a hydrolyzate of a decane coupling agent.

The decane coupling agent having an epoxy group, an amine group, an acryloyl group or a methacryl oxime group may be used singly or in combination of two or more kinds, more preferably three or more. A tertiary condensation amine soluble in an organic solvent is used as a polycondensation catalyst for increasing the reaction rate, and is simultaneously used as an epoxy group-containing decane coupling agent and a decane coupling agent having an acryloyl group or a methacrylium group. It is better. When the content of the compound composed of the alkoxysilane, the compound having a functional group reactive with a hydroxyl group or an alkoxy group, and the decane coupling agent are each a% by mass, b% by mass, and c% by mass (the alkoxydecane is formed at this time) The content of the compound is calculated from the calculation of the polycondensation after the ideal condensation, and when a compound composed of an alkoxysilane and a compound having a functional group reactive with a hydroxyl group or an alkoxy group are used, a/b It is preferably 10/90 to 90/10, 20/80 to 80/20, and 40/60 to 80/20. When a compound composed of an alkoxysilane and a decane coupling agent are used, a/b is preferably 40/60 to 95/5, more preferably 50/50 to 90/10. When a compound composed of an alkoxysilane, a compound having a functional group reactive with a hydroxyl group or an alkoxy group, and a decane coupling agent are used together, a/(b + c) is preferably 10/90 to 90/10. 20/80~80/20 is better, 40/60~80/20 is especially good. At this time, the b/c system is preferably 10/90 to 90/10, 20/80 to 80/20 is better, and 40/60 to 80/20 is particularly preferable. 2-(4) Other components The above is a polycondensation reaction of a compound composed of an alkoxysilane. The present invention uses a catalyst and water. The curing catalyst is an acid such as hydrochloric acid, nitric acid, acetic acid, oxalic acid, maleic acid or fumaric acid, and the organic solvent is soluble in N,N-dimethylbenzylamine, tripropylamine, tributylamine, triamylamine, etc. Tertiary amines, organometallics, metal alkane-20- 200809279 oxides, etc. The amount of addition is preferably 1 to 10% by mass, more preferably 1 to 5 parts by weight, per 100 parts by weight of the compound of the alkoxydecane. Further, in the case of adding water, it is preferred that the partial hydrolyzate is theoretically 100% hydrolyzed or more, and 110 to 300% is more preferably equivalent, and it is particularly preferable to add 120 to 200%. In the present invention, if necessary, the coating layer may further contain a UV absorber. Further, when a decane coupling agent having an acrylonitrile group or a methacrylonitrile group is used, it is also preferable to contain a photoinitiator as described in the following section of the hard coat layer in an amount of about 0.5 to 5% by weight based on the content of the decane coupling agent.

2-(5) Coating Solution The solvent used to form the coating composition of the vermiculite coating film as the coating layer of the present invention is water, methanol, ethanol, isopropanol, n-butanol, isobutanol, It is preferred to use one type of octanol or a mixture of two or more types. The amount of the solvent is preferably adjusted to a solid content of 15 to 60% by mass. 2-(6) Polyoxazane The coating layer of the present invention, another preferred raw material of the vermiculite coating film is a cured product containing a coating composition of polyazane, and a polyazane used. Preferred are the polyazulidines described in paragraphs 0097 to 0104 of JP-A-11-240103. The polyazane can be used as a single substance or as a compound composed of the former alkane decane. 2-(7) Adhesion to the substrate When the vermiculite coating film is used as the coating film of the present invention, the adhesion to the transparent substrate film is a problem. In order to improve the adhesion, it is preferable to form a vermiculite coating film on the transparent base film after the primer layer is added, and the productivity is lowered due to the increase in the number of layers, and the cost and thickness are increased. In the present invention, it is more preferable to apply a pretreatment such as a hydrophilization treatment or a concavo-convex treatment to one surface or both surfaces of the base film. The pretreatment includes corona discharge treatment, glow discharge treatment, chromic acid treatment (wet type), alkalization unit-21 - 200809279 (wet type), flame treatment, hot air treatment, ozone/ultraviolet irradiation treatment, etc. Better. 2-(8) Adhesion to hard coat layer When a vermiculite coating film is used as the coating film of the present invention, adhesion to the hard coat layer is also a problem. In order to improve the adhesion to the hard coat layer, one of the preferred effective means is to make the sand-sand coating film and/or the hard coat layer contain the political affinity agent, so that the sand-stone coating film contains the sand courtyard affinity agent is better. It is especially preferable that both the sand-based coating film and the hard coat layer contain a decane coupling agent having the same functional group of φ. The resin component of the hard coat layer is generally a polyfunctional acrylate or methacrylate monomer, an oligomer, a polymer, and the decane coupling agent is preferably a decane coupling agent having an acrylonitrile group or a methacrylonitrile group. .

When the vermiculite coating film is used as the coating film of the present invention, another preferable means for improving the adhesion to the hard coat layer is to provide an intermediate layer between the coating layer and the hard coat layer. A primer layer may be provided as a primer layer, and a layer containing a decane coupling agent is more preferable, and a layer containing a decane coupling agent having an acrylonitrile group or a methacryl fluorenyl group is further preferably provided. Layers containing a decane coupling agent and a polyfunctional polyfunctional acrylate or methacrylate monomer, oligomer, or polymer are preferred. The decane coupling agent is more preferably a decane coupling agent having an acrylonitrile group or a methacrylonitrile group. When a layer containing a decane coupling agent is provided, a partial condensate of a decane coupling agent hydrolyzate or a hydrazine coupling agent hydrolyzate is particularly preferred. The film thickness of the intermediate layer is preferably 0.05 to 2 #m. (2) Thickness of coating layer When a vermiculite coating film is used as the coating film of the present invention, the thickness of the coating layer is preferably 0.2 to 40/zm, more preferably 3 to 20/zm, 1 ~10/zm is especially good. When the thickness is less than 0.2 β m, the moisture resistance is poor. On the contrary, if the thickness is 40 β m or more, the film becomes brittle, and -22-200809279 is suitable as a polarizing plate protective film which is good for curling. The haze of the coating layer is preferably 50% or less, more preferably 30% or less, and most preferably 1% or less. The ratio of the surface haze to the internal haze is arbitrary, and the surface haze is preferably 1% or less. 2-(10) construction

When the vermiculite coating film is used as the coating film of the present invention, it can be provided in the polarizing member as shown in Fig. 2 (1), (2) or Fig. 2 (3) and (4) of the polarizing plate structural diagram. Between the transparent substrate film or the transparent substrate film and the opposite side of the polarizer. It can also be disposed on both sides, and as shown in Fig. 2 (1) and (2), the adhesion between the transparent substrate film and the polarizer is opposite to the polarizer, and the processing property of the polarizing plate. It is better. As shown in Fig. 2 (2), the structure having a hard coat layer on the surface is excellent in scratch resistance and crack resistance of the coating layer. (4) Coating layer composed of a hydrophobic compound 4-(1) Hydrophobic compound The low moisture permeability coating layer of the present invention can be formed by forming a main component of a matrix with a hydrophobic compound. The coating layer is formed by using a hydrophobic compound as a main component, and in particular, adsorption of water molecules on the surface of the film is inhibited, and it is dissolved in the film, and the moisture permeability can be lowered through the film. Further, the inter-molecular interaction between the compounds forming the matrix, other interactions, or more dense cross-linking is further reduced to reduce the degree of freedom of movement in the matrix molecular film, and the moisture permeability can be further lowered. The binder constituting the hydrophobic substrate for these purposes is composed of a hydrophobic monomer constituting agent, a hydrophobic monomer, a polyfunctional monomer (crosslinking agent), a hydrophobic polymer, and a crosslinking agent. The binder having a large interaction between the compounds is a liquid crystal single system, a liquid crystal monomer, and a crosslinking agent. These binders are preferably based on hydrophobicity, solubility, and film-forming properties, and logP is preferably 1.0 or more and 12 or less, more preferably 2.0 or more and 11.5 or less, and more preferably 3.0 or more.

UogP 値)

The determination of the octanol-water partition coefficient U〇gP値) can be carried out in accordance with the flask permeation method described in ns Japanese Industrial Standard Z7260-0707 (2000). It can also be substituted for the actual determination of the octanol-water partition coefficient' by computational chemistry or empirical methods. The calculation method can be Crippen's fragmentation method (J. Chem. Inf· Comput Sci, 27, 21 (1987)), Viswanadhan's fragmentation method (J. Chem. Inf. Comput. Sci·, 29, 16) 3 (1 9 8 9)), Br oto ' s fragmentation method (Eur. J. Med. Chem. - Chim. Theor., 19, 7 1 (1984)), etc., and Crippen's fragmentation method (J. Chem. Inf. C ompu t. S c i., 2 7, 2 1 (1 9 8 7 )) is preferred. If the log P値 of the measurement method and the calculation method of a certain compound is different, whether or not the compound is within the scope of the present invention is preferably determined by the Crippen's fragmentation method. Specific examples of the hydrophobic monomer include a fluorine-based monomer, a cycloolefin-based monomer, and an aromatic-containing monomer. As the fluorine-based monomer, a fluorine-containing compound having a crosslinkable or polymerizable functional group, a compound described in JP-A-9-5519, a compound described in JP-A-2000-1 59840, and the like can be used. The cycloolefin-based monomer can be, for example, a compound described in JP-A-2006-83225, JP-A-5-5 1542, JP-A-6-3 1 3056, JP-A-6-340849, and a hydrophobic polymer. A polymer, a cycloolefin polymer, an aromatic polymer, or the like, and a fluorine-based polymer can be a compound described in Japanese Patent Publication No. Sho 63-1 8964, a compound described in JP-A-7-701 07, Reports Res. Lab. Asahi Glass Co., Ltd., 5 5 (2005) The compound described in P47 to 51. As the cycloolefin polymer, a resin composition as described in JP-A-H07-228673, JP-A-8-259784, or the like can be used. -twenty four -

200809279 In the hydrophobic layer of the present invention, the above-mentioned hydrophobic binder (in addition to a monomer, it is a functional polymerizable monomer or a crosslinkable monomer, in order to reduce moisture permeability and improve film properties such as brittleness and curling. The monomer may be a polyfunctional monomer, a polyfunctional oligomer or the like described in the following. When the main component of the hydrophobic layer of the present invention is a monomer or a polymerizable property, it can be formed by polymerization hardening. When the polymerization initiator is used, the polymerization initiator is preferably used in an amount of 0.01 to 10.0% by weight based on the monomer or the polymerizable compound, preferably more preferably 0.5% by weight. 5.0% by weight is particularly preferred. The above organic solvent-based coating is a hydrophobic binder, and the water-based coating material may be a water-dispersible polyester 4_(3) hydrophobic layer described in JP-A-2003- 1 65 186. The thickness of the hydrophobic layer in the present invention is preferably 〇5 μm or less, and more preferably 厚度/zm or more, in terms of the effect of reducing the moisture permeability, the film properties such as brittleness and curl, and the viewpoint of the present invention. More preferably 30/zm or less, and 2.0//m is more preferably m or less. Further, the hydrophobicity in the present invention The haze is preferably used as the lower part, preferably 5.0% or less, more preferably 3.0% or less, more preferably 1.0% or less, and the same as the hard coat layer or the anti-glare layer described later. - (4) Formation of mixed region In the hydrophobic layer of the present invention, in order to ensure the adhesion of the hydrophobic layer composed of the hydrophilic cellulose-based aqueous compound to reduce the strength and durability of moisture permeability, it is hydrophobic. It is preferable that the resin layer is mixed with the resin of the cellulose-based substrate to form a mixed region, and the mixed region is formed to form a spot, and a hydrophilic substrate film having low compatibility with a low compatibility can be ensured and the moisture permeability is lowered and maintained. The strength and durability of the film. The composition of the compound is more than the coating. The compound can be applied with a weight of ~7.0: 〇 productivity and upper 40 // upper 25 // film; good. Only 膜 film and sparse maintenance film interface two suppression dry layer -25- 200809279 The thickness of the mixed region is preferably 0.2~10/zm, 0.3~7/zm is better, 0.5~5# m is better. When the layer thickness of the mixed region is less than this range, the effect of suppressing the interference spot and the effect of the adhesion are low, and if the thickness is larger than this range, the effect of lowering the moisture permeability tends to be impaired. The thickness of the mixed region can be cut by a slicer to cut the cross section of the anti-reflection film. The self-section is observed by a scanning electron microscope (S-5 70, manufactured by Hitachi, Ltd.), and the mixed region is obtained from the photograph after photographing. The layer is thick.

In the present invention, as the solvent for forming the coating liquid of the hydrophobic layer, in order to form the above-mentioned mixed region, it is necessary to use a solvent having a property of dissolving or swelling the support. Therefore, if such a solvent is used in the coating liquid, the support is dissolved or swollen after coating, and a hydrophobic layer is formed, so that the interface between the substrate film and the hydrophobic layer becomes unclear, and at the same time, the hydrophobic layer is The formation of the region layer in which the resin component and the resin component of the base film are mixed. Further, in order to maintain the function of lowering the moisture permeability of the hydrophobic layer, it is preferred to mix at least one or more solvents of the substrate film (e.g., the cellulose triacetate support). More preferably, at least one of the solvents which dissolve the substrate film has a boiling point higher than at least one of the solvents which do not dissolve the substrate film. Further, since the main component of the hydrophobic layer of the present invention is a hydrophobic compound, the solubility in the solvent for dissolving or swelling the substrate film should be insufficient. Therefore, it is preferred that at least one of the solvent for dissolving or swelling the substrate film or the solvent which is insoluble has sufficient solubility for the hydrophobic compound of the present invention. In this case, it is preferred to use a fluorine-based solvent for the fluorine-based adhesive. In the case of supporting the system of the fluorene-based cellulose film, the solvent having the property of dissolving or swelling the above-mentioned support is an ether having 3 to 12 carbon atoms, specifically dibutyl ether, dimethoxymethane, dimethoxyethane, and a ring. Oxygen propylene hospital, 1,4 - 曙 曙, 1,3- 曙 曙 Chen, 1,3,5 - 曙 曙, -26- 200809279 tetrahydrofuran, methoxybenzene and phenyl ether, etc., carbon number 3~ 12 ketones, specifically acetone, methyl ethyl ketone, diethyl ketone, dipropyl ketone, diisobutyl ketone, cyclopentanone and methyl cyclohexanone, etc., esters having 3 to 12 carbon atoms, specifically Ethyl formate, propyl formate, n-amyl formate, methyl acetate, ethyl acetate, methyl propionate, ethyl propionate, n-amyl acetate and r-butyrolactone,

An organic solvent having two or more functional groups: specifically methyl 2-methoxyacetate, methyl 2-ethoxyacetate, ethyl 2-ethoxyacetate, ethyl 2-ethoxypropionate, 2-methoxyethanol a chlorine-containing solvent such as 2-propoxypropanol, 2-butoxyethanol, 1,2-diethoxypropenylacetone, acetamidineacetone, diacetone alcohol, ethyl acetoacetate or ethyl acetate; Methyl chloride, chloroform. These may be used alone or in combination of two or more. The solvent for dissolving the substrate film is preferably a ketone solvent, and particularly preferred are methyl ethyl ketone or cyclohexanone. The solvent which does not dissolve the substrate film (preferably cellulose triacetate) is methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, tertiary butanol, 1-pentyl Alcohol, 2-methyl-2-butanol, cyclohexanol, isobutyl acetate, methyl isobutyl ketone, 2-octanone, 2-pentanone, 2-hexanone, 2-heptanone, 3-pentyl Ketone, 3-heptanone, 4-heptanone, toluene. These may be used alone or in combination of two or more. Further, other solvents which can dissolve the fluorine-based binder include fluorine-containing solvents such as perfluoropentane, perfluoropropane, perfluorohexane, perfluoromethanol, and perfluoroethanol. The mass ratio (A/B) of the total amount of the solvent (A) in which the substrate film is dissolved to the total amount of the solvent (B) in which the substrate film is not dissolved is preferably 10/90 to 100/0, 20/80 to 100. /0 is better, 30/70~100/0 is especially good. 4-(5) Adhesion to other layers The hydrophobic layer in the present invention, as used in the construction examples described later, is preferably a laminate of -27-200809279 hard coat layer, antiglare layer, and antireflection layer. The adhesion to other layers should be maintained. In this case, it may be formed directly on the hydrophobic layer, or may be provided with adhesion and low moisture permeability by another method as described later [undercoat layer]. 4- (6) Construction

The structure of the low moisture permeable layer using the hydrophobic layer in the present invention may be provided in the polarizing member as shown in Fig. 2 (1), (2) or Fig. 2 (3) and (4) of the polarizing plate structural diagram. Between the substrate film and the substrate and the opposite side of the polarizer. Further, it may be provided on both sides, and as shown in FIG. 2 (1) and (2), the adhesion to the polarizer may be provided on the opposite side of the polarizer from the base film. The processing suitability of the polarizing plate is better. Further, the hydrophobic layer in the present invention may also serve as a hard coat layer. At this time, the properties of the film are equivalent to those of the hard coat described in other items. 5. A coating layer using a hydrophilic polyfunctional compound and a crosslinking agent can be used for the low hygroscopic coating layer of the present invention, and a hydrophilic polyfunctional compound and cross-linking can be used from the viewpoint of forming a dense film to reduce moisture permeability. The layer of the combination of agents. Specifically, a method of laminating (A) a layer of a resin composition composed of a saccharide and a compound containing a fluorenyl group, or a method of laminating (B) an amine group-containing polymer compound and an amine group-containing reactivity A method of a layer of a resin composition composed of a functional group and an organic decane compound containing a stanol group, and the like. When these cross-linking compounds or reactive compounds are used, the densification effect of the film can be attained, and the low moisture permeability under high-humidity conditions can be maintained by reaction with the hydrophilic functional group. In the present invention, a highly hydrophilic cellulose-based transparent substrate is formed with a coating layer containing a compound containing these hydrophilic groups as a main component as a low moisture-permeable layer, that is, the adhesion to the substrate can be sufficiently ensured. It further reduces moisture permeability and can form a low moisture permeable layer which is excellent in durability and low moisture permeability. 5- (1) Composition of hydrophilic polyfunctional compound and crosslinking agent-28 - 200809279 In the present invention, (A) a resin composition composed of a saccharide and a compound containing a fluorenyl group can be used in JP-A-2003-238827, The resin composition described in JP-A-2003-23 8734. 5-(2) Surface treatment of the substrate

In the present invention, in order to sufficiently ensure the adhesion between the coating layer of the hydrophilic polyfunctional compound and the substrate, it is preferred to carry out the surface treatment of the substrate film before laminating the coating layer. In the surface treatment of a substrate composed of fluorenyl cellulose, a general method is known to improve the adhesion of a polarizer composed of PVA when used as a protective film for a polarizing plate, or to form a PVA on a fluorene-based cellulose film. The aligning film is represented, and an optical film in which an alignment layer of a crystalline compound or the like is formed is formed, and alkalization treatment is performed on the surface of the substrate. At this time, the hydroxyl group of the hydrogen oxygen gene and PVA which are exposed or newly formed on the surface by alkalization treatment are formed. The hydrogen bonding ensures the adhesion, and the durability under high-humidity conditions causes the adhesion to decrease due to moisture interfering with hydrogen bonding. In contrast, in the present invention, the surface treatment of the substrate film, the mercapto group-containing compound contained in the (A) resin composition, or the organic germane compound and the substrate contained in the (B) resin composition are applied. The surface of the film is crosslinked, and the durability under high-humidity conditions is also sufficiently ensured, and the density is increased by cross-linking to sufficiently ensure the adhesion. The surface treatment method may be selected from known methods such as corona treatment, plasma treatment, and the like, such as flame treatment and alkalization treatment, and based on the stability of productivity and adhesion, the latter is preferably the latter. In the method described, the method of applying the alkali solution is more preferable. The surface contact angle of the substrate after the surface treatment is preferably 50 degrees or less with respect to water, more preferably 45 degrees or less, and most preferably 40 degrees or less. Further, in order to further improve the adhesion to the substrate, it is also preferable to use a coupling agent in the resin composition. For the (A) resin composition, a compound having a hydroxyl group-reactive functional group, a methyl group-containing reactive functional group, and a hydroxyl group-reactive functional group may be used for the (B) resin composition. The compound may be a compound containing a decyl alcohol group and a hydroxyl group reactive functional group, a compound containing an amine group reactive functional group and a hydroxyl group reactive functional group, a compound containing an amine group and a hydroxyl group reactive functional group, or the like.

Here, the hydroxy-reactive functional group includes an isocyanate group, an epoxy group, a formazan group, etc., and the formazan-reactive functional group has a hydroxyl group, an amine group, a thiol group, etc., and an amine-reactive functional group has an isocyanate group. Epoxy group, formamidine group and the like. 5-(3) Adhesion to other layers The coating layer using the hydrophilic polyfunctional compound and the crosslinking agent of the present invention functions to further laminate a hard coat layer, an antiglare layer, and an antireflection layer. The sex layer is better. In this case, it is preferable to use a coupling agent in the coating layer using the hydrophilic polyfunctional compound and the crosslinking agent from the viewpoint of ensuring adhesion to the functional layer. The coupling agent is preferably a decane coupling agent composed of a compound containing a methyl group and a polymerizable group, a polymerizable group, and an alkane. Here, the polymerizable group is preferably a double bond group such as an acryloyl group, a methacryloyl group or an allyl group, or an epoxy group. Examples of the decane coupling agent are compounds described under the former decane coupling agent, and particularly preferably an epoxy group decane coupling agent and a decane olefin coupling agent having an acryl fluorenyl group or a methacryl fluorenyl group. The amount of the decane coupling agent is preferably 0.01 to 10.0% by weight, more preferably 0.1 to 7.0% by weight, even more preferably 0.5 to 5.0% by weight, based on the solid content of the coating composition. ' 5-(4) Thickness and haze of the coating layer using the hydrophilic polyfunctional compound and the crosslinking agent -30-200809279 thickness of the coating layer using the hydrophilic polyfunctional compound and the crosslinking agent of the present invention, The effect of reducing the moisture permeability, the film properties of brittleness and curling, and the viewpoints of productivity and cost are preferably 0.5 /zm or more and 4 0 // m or less, and more preferably 1 / 〇 or more and 30 / zm or less. /zm is the best below. Further, the haze of the coating layer using the hydrophilic polyfunctional compound and the crosslinking agent is preferably as low as an optical film, preferably 5.0% or less, more preferably 3.3% or less, and 1.0% or less. Especially good. 5-(5) construction

In the present invention, a low moisture permeable layer comprising a coating layer of a hydrophilic polyfunctional compound and a crosslinking agent is used, and the structure thereof is as shown in Fig. 2 (1), (2) or Fig. 2 (3) of the polarizing plate structure. (4), it may be provided between the polarizer and the base film, or on the opposite side of the polarizer from the base film. Further, it may be provided on both sides, and as shown in FIGS. 2(1) and (2), the adhesion to the polarizer may be provided on the opposite side of the polarizer from the base film. The processing suitability of the polarizing plate is better. (6) Coating layer containing an inorganic layered compound In order to further reduce the moisture permeability of the coating layer of the present invention, it is preferred to disperse the inorganic layered compound in the binder which can be used in the coating layer. The inorganic layered compound is preferably used in a water-soluble binder because it has a hydrophilic surface, and is dispersed in a coating layer composed of the above vinyl alcohol-based polymer or a coating layer composed of a vermiculite coating film. good. The combination with the above preferred vinyl alcohol polymer gives the best performance. Further, by the organic treatment of the inorganic layered compound, it is also possible to disperse in a binder having a low hydrophilicity to lower the moisture permeability. 6-(1) Inorganic layered compound In the present invention, the inorganic layered compound refers to an inorganic compound having a structure in which a unit crystal layer is laminated and exhibiting properties of swelling or cracking due to solvent coordination or absorption between layers. Such inorganic compounds are, for example, swellable aqueous citrate - 31 - 200809279

For example, bentonite group clay minerals (montmorillonite, saponite, lithium bentonite, etc.), vermiculite group clay minerals, kaolinite group clay minerals, strontium silicate (mica, etc.). Further, synthetic inorganic layered compounds are also suitable, and synthetic inorganic layered compounds include synthetic bentonite (lithium bentonite, saponite, strontite, etc.), synthetic mica, etc., and bentonite, montmorillonite, and mica are preferred. Desmut and mica are better. Commercially available inorganic layered compounds are MEB-3 (COPE Chemical Synthetic Mica Water Dispersion), ME-100 (C〇PE Chemical Synthetic Mica), S1ME (C〇PE Chemical) ) Synthetic mica), SWN (COPE chemical synthetic bentonite), SWF (C〇PE chemical (share) synthetic bentonite), CUNIPIA (CUNIMINE chemical industry (shared) purified bentonite), BENGEL ( HOJUN (share) purified bentonite), BENGEL HV (purified bentonite made by HOJUN), BENGEL FW (purified bentonite made by H〇JUN), BENGEL BRIGHT 1 1 (H〇JUN) Purified bentonite), BENGEL BRIGHT 23 (purified bentonite manufactured by H〇JUN), BENGEL BRIGHT 25 (purified bentonite manufactured by HOJUN), BENGEL A (purified bentonite manufactured by H〇JUN) BENGEL 2M (purified bentonite manufactured by HOJUN Co., Ltd.). Further, the inorganic layered compound may be one obtained by subjecting the inorganic layered compound to an organic treatment. In order to achieve both the gas barrier properties and the adhesion between the substrate and the gas barrier layer, the swellable layered inorganic compound is preferably subjected to microparticulation. The swellable layered inorganic compound which is subjected to the micronization treatment is usually in the form of a plate or a flat shape, and the planar shape is not particularly limited, and may be amorphous. The average particle diameter (average particle diameter of the planar shape) of the swellable layered inorganic compound which is subjected to the micronization treatment is preferably, for example, 0·1 to 10 μm, more preferably 0·1 to 8 M m , and 0.1 to 6 μm. m is especially good. The average particle diameter refers to the particle size distribution in the particle size distribution 测 measured by a general particle size distribution, for example, a light scattering type particle size distribution meter ("MicroTRAC UPA" manufactured by Nikkiso Co., Ltd.). Small particle size -32- 200809279 In this range, the effect of reducing the moisture permeability is insufficient, and if the particle size is large, the haze is small and the surface roughness is not good. The concentration of the inorganic compound is preferably 3 to 60% by weight, preferably 15 to 60% by weight, more preferably 2 to 55% by weight. Below this range, the effect of reducing the moisture permeability is insufficient, and if the haze is high, the haze is increased, and the brittleness is deteriorated. 6-(2) Dispersion treatment of inorganic layered compounds

The inorganic layered compound is dispersed in the binder in a state in which the interlayer is uniformly cracked, and the moisture permeability path is extended to lower the moisture permeability. Therefore, it is very important to obtain a dispersion treatment in a state in which the layers of the inorganic layered compound are uniformly cracked. The dispersion treatment is preferably carried out by multiple times of high pressure dispersion treatment in the solution. The treatment pressure is 1 〇 Μ P a or more, preferably 20 MPa or more. The solvent is not particularly limited, and the inorganic layered compound which has not been subjected to organication treatment is, for example, water or a water-soluble solvent (lower alcohol such as methanol, ethanol or isopropanol, acetone or the like), and water is particularly preferred. Further, a mixed solvent of water and a lower alcohol is also suitable. The treatment method of the high-pressure dispersion is, for example, a method in which a swellable layered inorganic compound is swollen with a solvent, and then stirred by a high-pressure homogenizer to be dispersed at a high pressure. The preparation method of the coating liquid is not particularly limited, and a method in which the binder component of the coating layer is uniformly dissolved in a solvent and mixed with a solvent in which the layered particles are uniformly dispersed is applied. 6-(3) Organically treated inorganic layered compound When the inorganic layered compound is dispersed in a compound having low hydrophilicity, it is preferable to use an inorganic layered compound which can be dispersed in an organic solvent, and the organically treated inorganic substance

N layered compounds are preferred. These inorganic layered compounds are, for example, inorganic layered compounds which are organically treated with an alkylamine or the like. Further, in order to further increase the strength of the coating layer and further reduce the moisture permeability, it is more preferable to treat it with an organicizing agent containing a polymerizable group. Commercially available inorganic layered compounds available in commercial products include SOMASIF MAE · MTE · MEE · MPE (all of which are synthetic mica made by COPE Chemical), -33-200809279 LOOSENTITE S AN, STN, SEN, SPN (both COPE Chemical (share) synthetic bentonite), ESBEN, ESBEN C · E · W · WX · N-400 · NX · NX80 · NZ · NZ70 · NE · NEZ · N012S · N012 (H0: TUN ( ))) Purified bentonite), ORGANITE · ORGANITE D · ORGANITE T (H〇JUN (shared) boring bentonite).

Further, it is also preferable to organically treat an inorganic layered compound which has not been subjected to an organic treatment, for example, a commercial product LOOSENTITE ME-100 (a synthetic bentonite manufactured by COPE Chemical Co., Ltd.). The organicating agent is preferably a quaternary ammonium salt, and is not particularly limited, and the quaternary ammonium salt of the formula (1) is more preferable. (1) (N(Ra)4-n(Rb)n) 十A· (wherein Ra shows (CH2)mH, (CH2)mRcH or (CH2Rc)mH, m is an integer of 2 or more, and Re is arbitrary Structure or not, Rb table CH3, η table 0 or an integer of 1 to 3. Α · Table C1 · or Βι: ·) η is preferably 0 to 3, 0 to 2 is better, 0, 1 is particularly preferred. When η is large, the dispersion is deteriorated and it is not good. Regarding Ra, all of the bases may have the same structure or may have different configurations. More preferably, the m system is 2 or more, and at least one of the bases m in Ra is 4 or more, more preferably 8 or more, and particularly preferably 8 to 30. The larger the m, the higher the dispersibility and the better, but if it is too large, the ratio of the organic matter to the inorganic layered compound is too large.

It is preferable that Ra has a structure in which intermolecular interaction is large. The intermolecular interactions have a large structure of OH, one CH2CH2, one, -CH〇(CH)3, and the like. The quaternary ammonium salts used for the organic treatment are, for example, dimethyldi(octadecyl)ammonium bromide, dimethylbis(octadecyl)ammonium chloride, benzyltrimethylammonium chloride, and bromination. Dimethylbenzyl octadecyl ammonium, trioctylmethyl ammonium bromide, polyoxypropylene trimethyl ammonium chloride, bis(polyoxypropylene) dimethyl ammonium chloride, chlorinated di(polyoxyethylene) ) Dodecylmethylammonium, tris(polyoxypropylene)methylammonium chloride, tris(polyoxypropylene)methylammonium bromide. 34- 200809279 The method of using the organically treated inorganic layered compound can be carried out except that the layered compound is sufficiently dispersed in an organic solvent, and a method of dissolving and/or dispersing a hydrophobic binder in a solvent is added. A method of adding the above-described organically treated inorganic layered compound liquid to a solution of a hydrophobic binder is used. Further, a method of directly adding an inorganic layered compound to a hydrophobic binder may be carried out by adding and kneading an inorganic layered compound in a molten state of a hydrophobic binder, and dispersing it while being dispersed in a hydrophobic binder.

[Transparent base film] The transparent base film of the present invention is excellent in optical uniformity, smooth in surface, and excellent in secondary workability in production of a polarizing plate, and is a sulfhydryl cellulose film. The mercapto cellulose used in the present invention is an aliphatic carboxylic acid ester or an aromatic carboxylic acid ester having about 2 to 22 carbon atoms, and a lower fatty acid ester of cellulose is particularly preferable. The lower aliphatic acid of the lower fatty acid ester of cellulose refers to a fatty acid having 6 or less carbon atoms, and may be, for example, cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate phthalate, etc., such as the special opening 10 A mixed fatty acid ester such as cellulose acetate propionate or cellulose acetate butyrate described in Japanese Patent No. 2,319,052, and the like. The ester of an aromatic carboxylic acid and cellulose described in JP-A-2002-265639, JP-A-2002-265638, and JP-A-2002-265638 is also applicable. The lower fatty acid ester of cellulose which is particularly suitable as described above is cellulose triacetate and the cellulose acetate propionate which will be described later. These cellulose esters can also be used in combination. The degree of substitution (DS) of the mercapto cellulose refers to the ratio of the thiol grouping of the three hydroxyl groups present in the 1-4 glycoside-bound glucose of the cellulose. The degree of substitution can be calculated by measuring the amount of bound fatty acid per unit weight of the cellulose building unit. The measurement method was carried out in accordance with ASTM-D 8 17-91. -35· 200809279 The sulfhydryl cellulose of the present invention can be balanced by the hydrophobicity of the sulfhydryl group and the moderate balance of the hydrophilicity of the hydroxy group, and the delayed humidity dependence and dimensional stability can be considered. That is, if the alkyl chain in the fluorenyl group is too short and/or the hydroxyl group ratio is too high, the delayed humidity dependence is large. Further, when the alkyl chain in the fluorenyl group is excessively long and/or the hydroxyl group ratio is too high, the Tg is low and the dimensional stability is deteriorated.

Therefore, the cellulose triacetate to be used in the present invention is preferably an oxime group having a degree of acetylation of 2.83 or more and 2.91 or less and no carbon atom number of 3 or more. The degree of acetylation is preferably 2.84 or more and 2.89 or less. Further, a preferred cellulose ester other than cellulose triacetate has a thiol substituent having a carbon number of 2 to 4, a degree of substitution of an ethyl fluorenyl group is X, and a degree of substitution of a propyl fluorenyl group is Y. The cellulose esters of the formulae (a) and (b). Formula (a) 2.6S X + YS 2.9 Formula (b) OS XS 2.5 Preferably, cellulose acetate propionate (total thiol substitution = X + Y) of 1.9 ^ 乂 '2.5, 0.1 丫 € 0.9 is preferred. The portion that is not substituted with a thiol group is usually present as a hydroxyl group. These can be synthesized by known methods. The thickness of the transparent substrate film is preferably 30 to 120 / z m, more preferably 40 to 80 # m. When the thickness of the base film is not less than the lower limit 値, there is no problem such as a difference in film strength. If the thickness is less than the upper limit 不易, it is less likely to have an excessive increase in weight, which is particularly disadvantageous for the absence of a large-sized television of 20 Å or more. [Ultraviolet absorber] The transparent base film, the moisture-proof layer, the undercoat layer, and the hard coat layer of the present invention are preferably two or more kinds of the ultraviolet absorbers of the following general formula (1). Further, the average enthalpy of the octanol/water partition coefficient (hereinafter referred to as logP) of the following formula (A) of the ultraviolet absorbing agent (hereinafter referred to as average log P) and the 基-36-200809279 basal degree of sulfhydryl cellulose A ruthenium-based cellulose film in which DS satisfies the relationship of the following formula (B) is more preferably used as a transparent base film. 1

(wherein R1, R2, 'R3, R4 and R5 each independently represent a hydrogen atom or a monovalent organic group, and R^R2 and R3 are at least one of the unsubstituted branches or linear alkyl groups having 4 to 20 carbon atoms. Base, R1, R2 and R3 are different) Average 1 〇g P = X^(1〇gP)" (A> η (in the formula, the weight fraction of the ηth ultraviolet absorber, U〇g〇 Log table η UV absorber logP) 5.0xDS-6.7 S average logP € 5.0xDS-5.1 Formula (B) The average enthalpy of logP used in the above UV absorber of the present invention (5.Ox DS-6.7) The above (5.0XDS-5.1) or less, (5.0xDS-6.5) or more (5.0xDS-5.2) or less is better. The average log of the logP is too large, the surface is deteriorated, and the average 値 of the logP is too small, the ultraviolet absorbing agent under high temperature and high humidity Further, the compound of the general formula (1) has a large absorption in the wavelength range of 3 30 to 360 nm. From the viewpoint of volatility, the average molecular weight of the ultraviolet absorber used in the present invention is preferably 250 to 1000, 260~ 800 is better, 270~800 is better, 300~800 is especially good. In these molecular weight ranges, it can be a specific monomer structure, its monomer -37-200809279 unit It may be a combination of an oligomer structure or a polymer structure. The ultraviolet absorber is preferably used for casting a sulfhydryl cellulose film, and the drying process is not volatile. (Compound addition amount) The above-mentioned ultraviolet absorption for use in the present invention The amount of the agent to be added is preferably 0.01 to 10% by weight, preferably 0.1 to 5% by weight, more preferably 0.2 to 3% by weight, based on the fluorenyl cellulose. (Compound addition method)

These UV absorbers can be added at any time in the stock solution process or at the end of the stock solution process. Next, the ultraviolet absorber of the general formula (1) will be described in detail. R1, R2, R3, R4 and R5 each independently represent a hydrogen atom or a monovalent organic group, and R1, R2 and R3 are at least one unsubstituted branched or linear alkyl group having 4 to 20 carbon atoms, R1. R2 and R3 are different. The substituent has, for example, an alkyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 8 carbon atoms, such as methyl group, ethyl group, isopropyl group, or the like). Butyl butyl, n-octyl, n-decyl, n-hexadecanyl, cyclopropyl, cyclopentyl, cyclohexyl, etc.), aliphatic alkenyl (preferably having 2 to 20 carbon atoms, more preferably carbon atoms) 2 to 12, particularly preferably having 2 to 8 carbon atoms, such as a vinyl group, an allyl group, a 2-butenyl group, a 3-pentenyl group, etc.), an aliphatic alkynyl group (preferably having 2 to 20 carbon atoms) More preferably, the number of carbon atoms is 2 to 12, particularly preferably 2 to 8 carbon atoms, such as propynyl or 3-pentynyl, and aryl (preferably having 6 to 30 carbon atoms). a carbon number of 6 to 20, particularly preferably a carbon number of 6 to 12, such as a phenyl group, a p-tolyl group, a naphthyl group, etc., a substituted or unsubstituted amine group (preferably having a carbon number of 0 to 20, More preferably, the number of carbon atoms is 0 to 1 0, and particularly preferably, the number of carbon atoms is 0 to 6, and there are, for example, an amine group, a methylamino group, a dimethylamino group, a diethylamino group, a diphenylmethylamino group, etc.), an alkoxy group. Base (better carbon number 1 to 20, more preferably 1 to 12 carbon atoms) -38-200809279

a carbon number of 1 to 8, such as a methoxy group, an ethoxy group, a butoxy group or the like, an aryloxy group (preferably having a carbon number of 6 to 20, more preferably a carbon number of 6 to 16, especially preferably) a carbon number of 6 to 12, for example, a phenoxy group, a 2-naphthyloxy group or the like, a mercapto group (preferably, the number of carbon atoms is 1 to 20, more preferably 1 to 16 carbon atoms, and particularly preferably a carbon number) 1 to 12, for example, an ethyl fluorenyl group, a benzamidine group, a decyl group, a trimethyl ethane group, etc.), an alkoxycarbonyl group (preferably, the carbon number is 2 to 20, and more preferably the number of carbon atoms is 2 to 2). 16, particularly preferred is a carbon number of 2 to 12, such as methoxycarbonyl, ethoxycarbonyl, etc.), an aryloxycarbonyl group (preferably having a carbon number of 7 to 20, more preferably a carbon number of 7 to 16, preferably The carbon number is 7 to 10, for example, phenoxycarbonyl or the like, and the decyloxy group (preferably having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, and particularly preferably 2 to 10 carbon atoms). There are, for example, an ethoxylated group, a benzamidineoxy group, etc., a guanamine group (preferably, the number of carbon atoms is 2 to 20, more preferably the number of carbon atoms is 2 to 1, 6 and more preferably the number of carbon atoms is 10). For example, acetaminophen, benzhydrylamine, etc.), alkoxycarbonylamine group (preferably The number of carbon atoms is 2 to 20, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 12 carbon atoms, such as methoxycarbonylamino group, etc., and aryloxycarbonylamino group (preferably having 7 carbon atoms) 〜20, more preferably, the number of carbon atoms is 7 to 16, particularly preferably, the number of carbon atoms is 7 to 12, such as phenoxycarbonylamino group, etc., and the sulfonamide group (preferably, the number of carbon atoms is 1 to 20, more preferably a carbon number of 1 to 1, 6 or more preferably a carbon number of 1 to 1, 2, for example, a methanesulfonylamino group, a benzenesulfonylamino group, or the like, an aminesulfonyl group (preferably having a carbon number of 0 to 20, More preferably, the number of carbon atoms is 0 to 16, and particularly preferably, the number of carbon atoms is 〇~12, and there are, for example, an amine sulfonyl group, a methamine sulfonyl group, a dimethylamine sulfonyl group, a phenylamine sulfonyl group, etc.), an amine Mercapto group (preferably having a carbon number of 1 to 20, more preferably 1 to 16 carbon atoms, and particularly preferably having 1 to 12 carbon atoms, such as an amine methyl group, a methylaminomethyl group, a diethylamine Mercapto, aniline, thiol, etc., alkylthio (preferably, the number of carbon atoms is 1 to 20, more preferably 1 to 1 6 carbon atoms; more preferably, the number of carbon atoms is 1 to 1 2, for example, Sulfur-based, ethylthio-based, etc., arylthio (preferably, carbon number 6 to 20, more preferably The number of carbon atoms is 6 to 16, -39 to 200809279, and the carbon number is preferably 6 to 12, for example, phenylthio group, etc., and the sulfonyl group (preferably, the number of carbon atoms is 1 to 20, and more preferably, the number of carbon atoms is 1). ~16' is particularly preferred, the carbon number is from 1 to 12', such as, for example, methylsulfonyl, toluenesulfonyl, etc.), sulfinyl (preferably, the number of carbon atoms is from 1 to 20, and more preferably, the number of carbon atoms is from 1 to 20). 16, particularly preferably, the carbon number is 1 to 12, such as, for example, methanesulfinyl, phenylsulfinyl, etc.), urea group (preferably, the carbon number is 1 to 20, and more preferably the carbon number is 1 to 16). More preferably, the carbon number is 1 to 12, such as a urea group, a methylurea group, a phenylurea group, etc., and a guanidinium phosphate group (preferably, the carbon number is 1 to 20, more preferably

The number of carbon atoms is from 1 to 16, particularly preferably from 1 to 12, and is, for example, a guanidinium diethylammonium phosphate or a guanylaminophosphate group, a hydroxyl group, a mercapto group or a halogen atom (for example, a fluorine atom or a chlorine atom). Bromine atom, indeed atom), cyano group, residue, nitro group, amino acid group, sulfinic acid group, sulfhydryl group, imido group, heterocyclic group (preferably, carbon number: 1 to 30, more preferably In the case of 1 to 12, the hetero atom has, for example, a nitrogen atom, an oxygen atom or a sulfur atom, and specifically, for example, an imidazolyl group, a pyridyl group, a quinolyl group, a furyl group, a piperidinyl group, a morpholinyl group, a benzoxazolyl group, a benzo group. Imidazolyl, benzothiazolyl, etc., decylalkyl (preferably having 3 to 40 carbon atoms, more preferably 3 to 30 carbon atoms, and particularly preferably having 3 to 24 carbon atoms), for example, a trimethyl sulfonate group, Triphenyl sulfonate, etc.). These substituents may also be substituted. Further, when there are two or more substituents, they may be the same or different, and may be bonded to each other to form a ring, and at least one of R1, R2 and R3 having an unsubstituted branch or a linear alkyl group having 4 to 2 carbon atoms in the table. , R1, R2 and R3 are different. R1 and R3 are preferably a hydrogen atom, an alkyl group, an aliphatic alkenyl group, an alkynyl group, an aryl group, a substituted or unsubstituted amino group, an alkoxy group, an aryloxy group, a transatom group, a halogen atom, and more preferably hydrogen. An atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group or a halogen atom is preferably a hydrogen atom or an alkyl group having 1 to 12 carbon atoms (preferably having 4 to 12 carbon atoms). R2 is preferably a hydrogen atom, an alkyl group, an aliphatic alkenyl group, an alkynyl group, an aryl group, a substituted-40-200809279 or an unsubstituted amino group, an alkoxy group, an aryloxy group, a hydroxyl group, a halogen atom, and more preferably a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, a halogen atom, particularly preferably a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, particularly preferably a hydrogen atom, a methyl group, and preferably a hydrogen atom. . R4 and R5 are preferably a hydrogen atom, an alkyl group, an aliphatic alkenyl group, an alkynyl group, an aryl group, a substituted or unsubstituted amino group, an alkoxy group, an aryloxy group, a hydroxyl group, a halogen atom, and more preferably a hydrogen atom. , an alkyl group, an aryl group, an alkoxy group, an aryloxy group, a halogen atom, a hydrogen atom, a halogen atom, a hydrogen atom, and a chlorine atom. Specific examples of the compound of the general formula (1) are listed below, but the present invention is by no means limited to the following specific examples. .41- 200809279

UV-4 Cl

OH

UV-6

Cl

H2C—CH2—CO-OH OH

H2c—ch2-cohd—ch2-ch-c4h9 UV-7 UV-8

HO

UV-10

OH

N^C4H9-tert C2H5 h2Cj-ch2 - co-o-ch2-^h-c4h9 [Plasticizer] The plasticizer which can be used for the transparent base film of the present invention is, for example, a polyol ester plasticizer, An alcohol ester plasticizer, a phosphate ester plasticizer, a phthalate plasticizer, etc., and a polyol ester plasticizer and a glycol ester plasticizer are preferable. Further, the amount of the phosphoric acid ester plasticizer added is preferably 16% by mass or less, more preferably 10% by mass or less, and most preferably 6% by mass or less. The polyol ester is preferably composed of an ester of a divalent or higher aliphatic polyol and a monocarboxylic acid, and preferably has an aromatic ring or a naphthene ring in the molecule. The polyol used in the present invention is represented by the following general formula (1). General formula (1) Rl - (OH)n

(R1 is an η-valent organic group, η is a positive integer of 2 or more, an OH-based alcoholic formula and/or a phenolic hydroxyl group) Preferred polyols are, for example, the following, but the invention is not limited thereto. There are ribitol, arabitol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,2-propylene glycol, 1,3-propanediol, dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, dibutylene glycol, 1,2,4-butanetriol, 1,5-pentanediol, 1,6-hexanediol, hexanetriol , sweet alcohol, mannitol, 3-methylpenta-1,3,5-triol, hydrazine, sorbitol, trimethylolpropane, trimethylolethane, xylitol, and the like. Particularly preferred are triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, sorbitol, trimethylolpropane, xylitol. The monocarboxylic acid used in the polyol ester of the present invention is not particularly limited, and may be an aliphatic monocarboxylic acid, an alicyclic monocarboxylic acid or an aromatic monocarboxylic acid. The use of an alicyclic monocarboxylic acid or an aromatic monocarboxylic acid is preferred in that the moisture permeability and the retention are improved. The preferred monocarboxylic acid is, for example, the following, but the invention is not limited thereto. Suitable aliphatic monocarboxylic acids are linear or pendant fatty acids having from 1 to 32 carbon atoms. The number of carbon atoms is preferably from 1 to 20, and more preferably from 1 to 1. The content of acetic acid is preferably improved by compatibility with a cellulose ester, and acetic acid is preferably used in combination with other monocarboxylic acids. Preferred aliphatic monocarboxylic acids are acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, heptanoic acid, caprylic acid, capric acid, capric acid, 2-hexanoic acid, lytic acid, lauric acid, tridecanoic acid, and ten -43- 200809279 tetraacid, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, nineteen acid, twenty acid, ric acid, tetracosic acid, hexacylic acid, twenty-seven acid, two Saturated fatty acids such as octadecanoic acid, tridecanoic acid, and tridecanoic acid, unsaturated fatty acid such as undecylenic acid, oleic acid, sorbic acid, linoleic acid, linoleic acid, and peanut oleic acid. Preferred alicyclic monocarboxylic acids are, for example, cyclopentanecarboxylic acid, cyclohexanecarboxylic acid, cyclooctylcarboxylic acid or derivatives thereof. Preferred aromatic monocarboxylic acids are, for example, benzoic acid, toluic acid, etc., which are introduced into an alkyl group of a benzene ring of a benzoic acid, a biphenyl carboxylic acid, a tetrahydronaphthalene carboxylic acid or the like, and an aromatic carboxylic acid having 2 or more benzene rings. Acid or such derivatives. Benzoic acid is especially preferred. The molecular weight of the polyol ester is not particularly limited, and is preferably from 30 Å to 1 500, more preferably from 350 to 750. When the molecular weight is large, it is preferable because it is less volatile, and it is preferably small in terms of moisture permeability and compatibility with cellulose ester. The carboxylic acid used for the polyol ester may be one type or a mixture of two or more types. Further, the OH group in the polyhydric alcohol may be all esterified, and some may still be a hydrazine H group. Specific compounds of the polyol ester are shown below.

-44- 200809279 化 C4Ha 味C 麟0_(<ΪΗ2》!-0一(CHafe-O-tCHafe 一Ο一 C ti it Ο Ο ❿ 〇i 〇i \-_-r 〇〇C4»^〇 -〇^mz-QH2-〇^〇-CAH9 o 4 o 6 CeHi Guang C-0-^CH3rCH2-0)~C 雠CgH17 〇4 〇® c_o{ch2gh2ch2-o^-g— ® C4H Guangg -0+CHaGH2CH2_0 Now draw C4Hs o 3 0 10 C8H17-C-0^CH2CH^H2-0^C-CbH17

·§_ CH (CH2h-〇"-lCH2}a - 〇 (CHa O

3 4 5 g-0 — (GH2)2 One by one (CH2h-0 is called CH3h· o °-s-〇

51 o γ-o such as HjtGH^CHr O

12〇ro such as Hiro^r〇—〇ch3 o 13 C4Hg- C-0 ^*CH2CH- 〇y^ C- C4HS o ch3 o 14 CaH, rg age O+CH 呤H-〇)^jf-C,H17 〇CHS Q 15 ^一“face of CHa today H — D^-C> 0 CH^ 〇-45- 200809279 4 4 ch2-〇-c— I xsss/ 7 1 CH^CHa hidden C surface ^ \ 0 H2 cc. o 18 o 9 1

CHi-〇-C-CeH17 CH3CH2-C-CM2-0-C-CeHirI ii CHg C-C capacity Hfff O owe 9 CMO o»c 9 I 1 hidden I 0H20oH2 SOC4

20

0 ti CHj^O^C ~o CHaCHa- C^CHj it ^ o c-eH2_o,cI fi ch2-o,c_chs o 22 CH2· ch3ch2-c-ch2 〇 9rai t 14 ο0H2Ο o

2-

CHa-〇-C-CHa o ch2-oh -46 200809279

Ch^ch-ch-ch-ch2 l n 9 ? 6 ό ό

-47 - 200809279 [Protective film for polarizing plate]

In the protective film for a polarizing plate of the present invention, the coating layer is formed on the transparent base film. As described above, the appropriate range of the thickness of the coating layer varies depending on the type of the coating layer. If the thickness of the coating layer is below the upper limit 値, it is excellent in low hygroscopicity, and it is preferable that there is no large curl or the like. If the curl is too large, the polarizing plate process, for example, in the adhesion step with the polarizing film, may be hindered when taken. Not only the process, but also the polarizing plate is still curled, which is not good for the LCD to cause uneven display. Therefore, it is preferable that the film thickness of the coating layer is limited to the above range to the extent that it is not curled or made small to be practically problematic. On the other hand, the lower limit of the film thickness is determined by the preferred range of water permeability, so that the effect of the present invention can be sufficiently obtained within the above range. The coating layer is composed of at least one layer and may be in a form of two or more layers. When two or more different coating layers are used simultaneously in the coating layer of the present invention, the moisture permeability is particularly lowered. Next, the moisture permeability will be described in detail. The measurement of the moisture permeability can be carried out in the "High Polymer Properties II" (Polymer Experiment Lecture 4), pages 28 to 294: Measurement of vapor permeation (mass method, thermometer method, vapor pressure method, adsorption amount method) In the method described, the film sample of the present invention is 70 mm, each is conditioned at 60 ° C and 95% RH for 24 hours, and the moisture content per unit area is calculated according to JIS Z-020 8 from the difference in mass before and after the humidity control ( g/m2). At this time, the weight of the cup placed in the constant temperature and humidity device was taken out at appropriate intervals, and the mass increase per unit time was determined by two consecutive weighings, and the evaluation was continued until it was fixed within 5%. In order to eliminate the influence of moisture absorption of the sample, the blank control cup which is not placed in the moisture absorbent is measured, and the moisture permeability is corrected. In the present invention, when the protective film of the coating layer of the polyvinyl alcohol, the ethylene vinyl alcohol copolymer and the resin layer of the resin layer is dispersed, the moisture permeability is measured from the side of the base material layer. -50- 200809279

The commercially available cellulose acetate film has a moisture permeability measured by the above-described measurement method, and generally has a moisture permeability of 1400 to 1 500 g/m2 · day under the above conditions of a thickness of 80/zm. The upper limit of the moisture permeability of the polarizing plate protective film of the present invention is preferably 300 g/m2·曰 or less, more preferably 200 g/m 2 ·day or less, and particularly preferably 150 g/m 2 ·day or less. When the moisture permeability is higher than the above upper limit, the effect of reducing the unevenness of the image is poor due to changes in the size of the polarizing film due to changes in temperature and humidity. The lower limit is not particularly limited, but from the viewpoint of processing productivity of the polarizing plate, it is preferably 20 g/m 2 ·day or more, and 30 g/m 2 ·曰 or more. In this range, there is no deterioration in the performance of the polarizing plate (polarization degree, single-plate transmittance), and display image unevenness due to changes in the temperature and humidity of the polarizing film during long-term use can be suppressed. The hardened coating layer may be a single layer or a plurality of layers, and a single layer having a simple process is preferred. In this case, the single layer refers to a coating layer formed of the same composition, and if the composition after coating and drying is the same, it may be formed by coating a plurality of times. The plural layer refers to a composition consisting of a plurality of different compositions. In the present invention, fine particles can be added to the coating liquid for forming a plurality of layers. By adding fine particles, the hardness can be improved, the adhesion to the transparent base film can be improved, and the moisture permeability can be lowered. [Particles] The fine particles may be any of inorganic fine particles, organic fine particles, and organic-inorganic composite fine particles. The inorganic fine particles include, for example, cerium oxide particles, titanium oxide particles, zirconia particles, alumina particles, cerium oxide particles, indium oxide particles, and the like. In general, the inorganic fine particles are only mixed to form an aggregate, and sometimes the coating is cleaved after hardening. In the present invention, in order to improve the affinity of the inorganic fine particles and the organic component, the surface of the inorganic fine particles may be treated with a surface modifying agent containing an organic component. The ruthenium charge of the fine particles is preferably from 2 to 40% by volume based on the volume of the coating layer after the filling, preferably from 3 to 30% by volume, more preferably from 5 to 30% by volume. In the coating liquid for forming a coating layer, an inorganic layered compound may be added as described above. The layered compound is preferably a synthetic mica, a synthetic bentonite or a montmorillonite.

The protective film for a polarizing plate of the present invention preferably has a haze of 5% or less, more preferably 30% or less, and most preferably 10% or less. The protective film for a polarizing plate of the present invention is preferably substantially colorless. "Substantially colorless" means the a* of the L*, a*, b* color system, and the absolute b of the b* is 3.0 or less. 2.5 or less is better, and 2 or less is especially preferred. Substantially colorless When the polarizing plate is made, the color tone is neutral gray, and it is preferable that the coloring disorder is not caused. In the protective film for a polarizing plate of the present invention, when it is crimped by the following formula (2), the enthalpy is preferably -15 to +15, more preferably -12 to +12, more preferably -10 to +10. At this time, the direction of measurement in the sample to be crimped is the direction in which the substrate is conveyed when it is applied in the form of a roll.

Equation (2): Curl = 1 / R is the radius of curvature (m) of this R table. Preferably, the crimp is in the above range, and the curl is small. When the film having the coating layer is used in the production, processing, and market in the above range, it is preferable that the film is not peeled off or the film is peeled off. When the volume shrinkage ratio before and after hardening is 15% or less, the curl can be made small to the above range and the surface hardness can be improved. The measurement of the crimp was carried out by using the template for crimp measurement of the method a in "Curling Measurement of Photographic Films" of ns K-76 1 9- 1 98 8. The measurement conditions were 25 ° C, humidity 60 % RH, and the humidity control time was 1 hr. Here, the curl is a regular finger, and the coating layer on the side of the coating layer is curled on the inside of the curved side, and the negative side means that the side of the coating is curled on the outer side of the curved layer. In the protective film for a polarizing plate of the present invention, when the humidity of the above curl measurement method is changed from 80% RH to 1% RH, the absolute value of each curl difference is preferably 24 to 0, and 1 5 to 0. Good '8~0 especially good. This is a property related to removability, peeling, and splitting when the protective film for polarizing plates -52- 200809279 is attached under various humidity conditions. In the anti-cracking property of the protective film for a polarizing plate of the present invention, when the coating layer is coated on the outer side and bent, the radius of curvature of the splitting is preferably 30 mm or less, more preferably 25 mm or less, and most preferably 20 mm or less. As for the splitting of the edge portion, it is preferable that the average length of no splitting or splitting is less than 1 mm. This anti-cracking property is an important characteristic that the coating film has no cracking when it is applied, processed, cut, attached, or the like.

The coating layer of the protective film for a polarizing plate of the present invention may be an additive such as a thermal stabilizer, a light stabilizer or a slip agent if necessary. [Hard-coated layer and/or anti-reflection layer] The film of the present invention is provided with physical strength, and is preferably provided with a hard coat layer (hereinafter referred to as a hard coat layer) on the surface of the transparent support. The hard coat layer imparts light scattering properties to the surface and/or the inside, and is preferably a light-scattering layer (a light-scattering layer or an anti-glare layer is provided on the surface). It is preferable to provide at least a low refractive index layer as a reflection preventing layer on the hard coat layer, and to lower the reflectance. The medium-refractive-index layer and/or the high-refractive-index layer are provided on the hard coat layer, and the anti-reflection layer formed by the plurality of layers is further provided with a reflection-preventing layer having a plurality of layers to further reduce the reflectance. It is also possible to provide an antireflection layer without a hard coat layer, but it is preferable to provide a hard coat layer for the physical strength of the lift film. The hard coat layer may also be composed of a laminate of two or more layers. The hard coat layer and the antireflection layer which can be used in the present invention are explained below. In the present invention, various coating layers may be provided, and the requirements for the hard coat layer may differ depending on the type of the coating layer, and the individual descriptions of the coating layer are described below, and the following are common contents. [Layer layer structure of hard coat layer and antireflection layer] A preferred aspect is to provide a hard coat layer on the transparent base film or on the cover layer, and to consider lamination of refractive index, film thickness, number of layers, layer order, and the like. The structure is obtained by reducing the reflectance by optical interference. The most simple structure of the antireflection layer is on the hard coat layer -53- 200809279 The structure of only the low refractive index layer is applied. In order to further reduce the reflectance, it is preferable to form a reflection preventing layer by combining a high refractive index layer having a refractive index higher than that of the transparent substrate film and a low refractive index layer having a refractive index lower than that of the transparent substrate film. The structural example includes a high refractive index layer/low refractive index layer 2 layer on the side of the transparent substrate film, or three layers having different refractive indices, and a medium refractive index layer (having a higher refractive index than the transparent base film or the hard coat layer) , which is lower than the layer of the high refractive index layer/the high refractive index layer/low refractive index layer, and the like, and has a proposal to laminate more layers of the reflection preventing layer. Among them, it is preferable to sequentially apply the medium refractive index layer/high refractive index layer/low refractive index layer to the transparent base film having a hard coat layer due to durability, optical characteristics, φ cost, productivity, and the like. The structure described in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. . Other functions may be imparted to each layer, for example, an antifouling property, a low refractive index layer, and an antistatic high refractive index layer (for example, JP-A-10-206603, JP-A-2002-243906, etc.).

A preferred layer configuration of the hard coat layer and the antireflection layer of the present invention is as follows. The antireflection film of the present invention is not limited to these layer structures if it can reduce the reflectance by optical interference. In the following structure, the transparent base film is formed of a coating layer on at least one of the hard coat layer and/or the antireflection layer side or the reverse side, and is a transparent base film which also contains a coating layer. In the following structure, the antiglare layer is preferably hardly coated, and may be hardly coated when laminated with a hard coat layer. In order to improve the hard coat property and control the surface morphology, it is also preferable to use a hard coat anti-glare layer and a hard coat layer. • Transparent base film / low refractive index layer • Transparent base film / antistatic layer / low refractive index layer • Transparent base film / anti-glare layer / low refractive index layer - 54 - 200809279 • Transparent base film / anti-glare Layer/antistatic layer/low refractive index layer

• Transparent substrate film / hard coating / anti-glare layer / low refractive index layer • Transparent substrate film / hard coating / anti-glare layer / antistatic layer / low refractive index layer • Transparent substrate film / hard coating / Antistatic layer/anti-glare layer/low refractive index layer•transparent substrate film/hard coating layer/high refractive index layer/low refractive index layer•transparent substrate film/hard coating layer/antistatic layer/high refractive index layer/ Low refractive index layer • Transparent substrate film / hard coat layer / medium refractive index layer / high refractive index layer / low refractive index layer • Transparent substrate film / anti-glare layer / high refractive index layer / low refractive index layer • Transparent base Film / anti-glare layer / medium refractive index layer / high refractive index stomach / low refractive index layer · transparent substrate film / antistatic layer / hard coating / medium refractive index layer / high refractive index layer / low refractive index layer, • Antistatic layer / transparent substrate film / hard coating / medium refractive index layer / high refractive index layer / low refractive index layer • transparent substrate film / antistatic layer / anti-glare layer / medium refractive index layer / high refractive index Layer / Low Refractive Index Layer / Antistatic Layer / Transparent Substrate Film / Antiglare Layer / Medium Refractive Index Layer / High Refractive Index Layer / Low Refractive Index Layer • Antistatic Layer / Transparent Substrate Film / Antiglare Layer / High Refraction Rate layer / low refractive index layer / high refractive index layer / The low-refractive-index layer is also in the form of a good one, and does not actively use optical interference. It is necessary to provide hard coating properties, antifouling properties, and the like. A preferred layer configuration of the film of the above-described state is as follows. In the following structure, the transparent substrate film is formed of a moisture-proof layer on at least one of the hard coat layer and/or the anti-reflection layer side or the reverse side, and becomes a transparent base film which also contains a coating layer. In the following structure, the antiglare layer is preferably hardly coated, and may be used in combination with a hard coat layer to have a hard coat property of -55 to 200809279. In order to improve the hard coat property and control the surface morphology, it is also preferable to use a hard coat anti-glare layer and a hard coat layer. • Transparent base film / hard coat layer • Transparent base film / hard coat / hard coat layer • Transparent base film / anti-glare layer • Transparent base film / anti-glare layer / anti-glare layer

• Transparent substrate film / hard coating / anti-glare layer • Transparent substrate film / anti-glare layer / hard coating layer • Transparent substrate film / antistatic layer • Transparent substrate film / antistatic layer / hard coating layer • Transparent Substrate film/hard coat layer/antifouling layer•antistatic layer/transparent substrate film/hard coat layer•antistatic layer/transparent substrate film/anti-glare layer•anti-glare layer/transparent substrate film/antistatic layer These layers can be formed by vapor deposition, atmospheric piezoelectric slurry, coating, or the like. From the viewpoint of productivity, it is preferred to form by coating. Each constituent layer will be described below. [Hard coating layer] In the present invention, based on the optical design of the antireflection film, the refractive index of the hard coat layer is preferably 1.48 to 2.00, more preferably 1.49 to 1.90, and particularly preferably 1.50 to 1.80. In the preferred embodiment of the present invention, in the hard coat layer having at least one low refractive index layer, if the refractive index is less than this range, the reflection preventing property is poor, and if the refractive index is too large, the color tone of the reflected light tends to become deep. From the viewpoint of imparting sufficient durability and impact resistance to the film, the thickness of the hard coat layer is usually about 0.5 to 50/zm, more preferably 1 to 20/zm, 2 to 15 μm is particularly good, and 3 to 12 " -56 to 200809279 m. The best 0 hard coat strength is preferably pencil hardness test H or more, 2H is better, and 3 Η is the best. According to IIS Κ5 4 00, the lower the wear of the test piece before and after the test, the better. The hard coat layer is preferably formed by a crosslinking reaction reaction of an ionizing radiation curable compound. For example, a coating composition containing an ionizing radiation curable polyfunctional polyfunctional oligomer can be applied to a transparent support to form a cross-linking reaction or a polymerization reaction of a multi-organic or polyfunctional oligomer. The ionizing radiation-curable polyfunctional monomer or polyfunctional oligomer is preferably a light-emitting electron beam or a radiation polymerizable group, and a photopolymerizable group is more preferable. The photopolymerizable functional group may be an unsaturated polymerizable functional group such as a (meth)acryl fluorenyl group, a vinyl group or a phenethylallyl group, and among them, (meth) propylene is preferred. The above-mentioned monomer having a polymerizable unsaturated group may be substituted or a crosslinkable functional group. Examples of the crosslinkable functional group include an isocyanate group, a cycloethylene group, an oxazoline group, an aldehyde group, a carbonyl group, a thiol group, a carboxyl group, a bay, and an active methylene group. A vinyl sulfonic acid, an anhydride, a cyanoacrylate derivative, a cyanamide, an etherified methylol group, an ester, and a urethane such as a metal poison of tetramethoxy decane may also be used as a monomer having a crosslinked structure. It is also possible to use a functional group which exhibits crosslinkability as a result of the decomposition reaction of the isodecyl group. That is, the present J-linked functional group may not react immediately, but is represented by the decomposition result. These crosslinkable functional groups of the binder can be heated and opened after application. In order to impart internal scattering properties, the hard coat layer may also have an average particle diameter of 1.0 to 15.0 from the above.

Polymer, energy single group with functional group, base for 'introduced civil base, 丨methyl trimeric oxime oxidation, acid ester 丨 middle cross: 〖〗 〖成父. m, compared to -57- 200809279 better 1 · 5~ The extinction particles of 1 0 · 0 // m, such as inorganic compound particles or resin particles 0, are used to control the refractive index of the hard coat layer, and a high refractive index monomer or inorganic particles or both may be added to the binder of the hard coat layer. In addition to the effect of controlling the refractive index, the inorganic particles have an effect of suppressing the hardening shrinkage caused by the crosslinking reaction. In the present invention, after the hard coat layer is formed, the polymer obtained by polymerizing the above polyfunctional monomer and/or high refractive index monomer or the like contains an inorganic particle dispersed therein, and is called a binder.

The haze of the hard coat layer varies depending on the function imparted to the protective film for a polarizing plate. Maintaining the sharpness of the image and suppressing the reflectance of the surface. When the light scattering function is not applied to the inside and the surface of the hard coat layer, the haze is preferably as low as possible, specifically, preferably less than 1%, and more preferably 5% or less. 2% or less is the best. When the surface scattering by the hard coat layer imparts an anti-glare function, the surface haze is preferably 0. 5 to 15%, more preferably 1 to 10%. The internal scattering of the hard coating makes the appearance of the liquid crystal panel, the color unevenness, the unevenness of the brightness, the glare, etc., and the internal haze 値 (the total haze minus the surface haze) ) is preferably 10 to 90%, 15 to 80% is better, and 20 to 70% is optimal. Depending on the purpose, the film of the present invention can also freely set the surface haze and the internal haze. As for the surface unevenness of the hard coat layer, in order to maintain the sharpness of the image, a clear surface is obtained so that, for example, the center line average roughness (Ra) of the characteristics of the surface roughness is 0.08 / z m or less. Ra is better at 0.07 // m or less, and 〇·〇6 //m is better. In the film of the present invention, the surface unevenness is dominated by the unevenness of the surface of the hard coat layer, and the average thickness of the center line of the hard coat layer is adjusted, so that the average thickness of the center line of the anti-reflection film falls within the above range. In order to maintain the sharpness of the image, it is better to adjust the surface unevenness of the surface to adjust the brightness of the image by -58-200809279. A clear reflection preventing film is preferably more than 60% clear. The sharpness of the image is generally presented, and the greater the degree of sluggishness of the image reflected by the film, the greater the sharpness and goodness of the image seen through the film. More than 70% is better than image clarity, and more than 80% is better. [Photoinitiator]

The photoradical polymerization initiators are acetophenones, benzoin, diphenyl ketones, o-oxides, ketals, anthracenes, oxysulfonium III oximes, azo compounds, peroxides. Classes (Specially Open 200 1 - 13 9663, etc.), 2,3-Dialkyldione compounds, disulfide compounds, fluoroamine compounds, aromatic oximes, oxophenes, and strontium salts Classes, borates, active esters, active halogens, inorganic complexes, humectins, and the like. These initiators may be used singly or in combination. "The latest UV hardening technology", Technical Information Association (shares), 1991, p.159, and "UV curing system" Kato Qingshi, the first year of Heisei, the comprehensive technology center issued, P. 65~148 also have various examples The description is useful in the present invention. A preferred example of a commercially available photoradical polymerization initiator is KAYACURE (DETX-S, BP-100, BDMK, CTX, BMS, 2-EAQ, ABG, CPTX, EPD, ITX, QTX) manufactured by Nippon Kayaku Co., Ltd. , BTC, MCA, etc., IRBACURE (65 184, 5 00, 8 19, 9 07 ; 3692 1 1 73, 1 87 0, 295 9, 4265, 4263, etc.), SARTOMER Esacure (KIP 1 00F, KB1, EB3, BP, X3 3, KT046, KT37, KIP150, TZT) and the like. The photopolymerization initiator is preferably used in an amount of 0.1 to 15 parts by mass, more preferably 1 to 10 parts by mass, per 100 parts by mass of the polyfunctional monomer. -59- 200809279 [Surface modifier] To remove surface defects (coating spots, dry spots, point defects, etc.), use a coating solution for making any layer on the support to add fluorine and polyoxyl At least any of the planar modifiers is preferred.

The surface modifier is preferably such that the surface tension of the coating liquid changes by 1 mN/m or more. Here, the surface tension change of the coating liquid of ImN/m or more means that the surface tension of the coating liquid after the addition of the planar modifier includes the concentration process during coating/drying, compared to the surface tension of the coating liquid without adding the planar modifier. There are changes above ImN/m. A planar modifier having an effect of lowering the surface tension of the coating liquid by 1 mN/m or more is preferable, and a planar modifier having a thickness of 2 mN/m or more is more preferable, and a reduction of 3 mN/m or more is preferable. Surface modifier. A preferred example of the fluorine-based planar modifier is a compound having a fluorine-containing lipid group. Examples of preferred compounds include the compounds described in JP-A No. 2005- 1 1 5359, JP-A-2005-22 1 963, and JP-A-2005-234476. [Anti-glare layer] The anti-glare layer is formed to impart anti-glare property to the surface of the film to be scattered, and preferably has a hard coat property for improving the scratch resistance of the film. Therefore, the present invention can be used as one of the hard coat layers. A method of forming an anti-glare property, such as the one described in Japanese Unexamined Patent Publication No. Hei No. Hei. The method of forming a difference between the irradiation amount of the ionizing radiation by the hardening shrinkage of the ionizing radiation-curable resin, and reducing the weight ratio of the strong solvent to the light-transmitting resin by drying as described in JP-A No. 2000-3 3 8 3 1 0, The method of forming the surface of the coating film by the gelation of the light-transmitting fine particles and the light-transmitting resin, and forming the unevenness on the surface of the coating film, as described in JP-A-2000-275404, the method of applying the surface-60-200809279 unevenness by external pressure. Such a conventional method can be utilized, for example, in the process of evaporating a solvent from a mixed solution of a plurality of polymers described in JP-A-2005-1995, the use of phase separation to form surface irregularities, and the like. [Use of Translucent Particles] One of the anti-glare layers which can be used in the present invention is preferably a type which contains a binder which can impart hard-coating properties, a light-transmitting particle for imparting anti-glare property, and a solvent as essential components. The surface irregularities are formed by the protrusions of the light-transmitting particles themselves or the aggregates of the plurality of particles. The anti-glare layer having anti-glare property is preferably combined with anti-glare property and hard coating property. < Preferred examples of the light-transmitting particles include inorganic compound particles such as vermiculite particles and Ti〇2 particles; acryl ruthenium particles, crosslinked propylene ruthenium particles, polystyrene particles, crosslinked styrene particles, and melamine resin particles. Resin particles. Among them, crosslinked styrene particles, crosslinked propylene ruthenium particles, and vermiculite particles are preferred. The shape of the matte particles may be spherical or amorphous.

It is also possible to use two or more kinds of matting particles having different particle diameters. The anti-glare property can be imparted by the matte particles having a larger particle size, and the matte particles having a smaller particle size impart other optical characteristics. For example, when an anti-glare reflective film is attached to a high-definition display of 1 33 ppi or more, there is a case where the image quality of the so-called "shining" is missing. The "shining" image is caused by the unevenness of the unevenness on the surface of the anti-glare anti-reflection film, which is caused by the loss of uniformity of brightness, and the particle size is smaller than that of the matting particles which impart anti-glare properties, and the extinction particle having a refractive index different from that of the binder 倂It can be greatly improved by using it. The amount of the above-mentioned matting particles in the formed antiglare hard coat layer is preferably from 10 to 1000 mg/m2, more preferably from 100 to 700 mg/m2, to the antiglare layer. The film thickness of the anti-glare layer is preferably 1 to 20 μm, and more preferably 2 to 10 # m. Within the above range, hard coatability, curling, and brittleness can be achieved. -61- 200809279 The center line average roughness (Ra) of the anti-glare layer is preferably 0.09~0.40 #m. When the brightness exceeds 0.40 // m, there is a problem such as surface whitening when the external light is reflected. Moreover, it is preferable that the image sharpness is 5 to 60%. The strength of the antiglare layer is preferably at least the pencil hardness test, more preferably 2H or more, and most preferably 3 Η or more. [phase separation]

In addition to the antiglare property of the light-transmitting particles which can be used in the present invention, an example of a method for imparting anti-glare property is a method of forming irregularities on the surface of a coating film by spinodal decomposition of a plurality of polymers. In particular, the phase difference is caused by the phase separation, which gives good light diffusivity. The light-scattering layer produced by spinodal decomposition is composed of a plurality of polymers having mutually different refractive indices, and is usually formed with at least a co-continuous phase structure in an atmosphere (especially a room temperature of about 10 to 30 ° C). Phase separation structure. The above-mentioned co-continuous phase structure is formed by spinodal decomposition of a liquid phase containing a plurality of polymers (a liquid phase at a normal temperature, for example, a mixed solution or a solution). The above-mentioned co-continuous phase structure is usually formed by a composition containing a plurality of polymers and having a liquid phase at a normal temperature (e.g., a mixed solution or a solution), which is formed by spinodal decomposition by solvent evaporation. Such a light scattering layer is formed of a liquid phase and has a uniform fine co-continuous phase structure. With such a transmissive light-scattering sheet, incident light is substantially isotropically scattered, and directivity can be imparted by transmitting scattered light. Therefore, high light scattering properties and directivity can be achieved. In order to improve light scattering properties, a plurality of polymers may be combined so that the refractive index difference is, for example, about 0.01 to 0.2, preferably about 0.1 to 0.15. When the refractive index difference is less than 0.01, the intensity of the transmitted scattered light is low, and when the refractive index difference is more than 0.2, high directivity cannot be imparted to the transmitted scattered light. The plural polymer may be, for example, a styrene resin, a (meth) propylene oxime resin, a vinyl ester resin, a vinyl ether resin, a halogen-containing resin, or an olefin resin (containing -62-200809279 alicyclic olefin resin) Polycarbonate resin, polyester resin, polyamido resin, thermoplastic polyurethane resin, polyfluorene resin (polyether mill, polyfluorene, etc.), polyether ether resin (polymerization of 2,6-monoformic acid) , etc.), cellulose derivatives (cellulose esters, urethane cellulose, cellulose ethers, etc.), polyoxyl resins (polydimethyl siloxane, polymethyl phenyl oxane, etc.) , rubber or elastomer (polybutadiene, polyisomeric diene rubber, styrene-butadiene copolymer, acrylonitrile-butadiene)

Copolymer, acryl rubber, urethane rubber, polyoxyxene rubber, etc. are suitably selected. The preferred polymer includes, for example, a styrene resin, a (meth) acryl resin, a vinyl ester resin, a vinyl ether resin, a halogen-containing resin, an alicyclic olefin resin, a polycarbonate resin, or a polyester system. Resin, polyamine resin, cellulose derivative, polyoxyn resin, rubber or elastomer. The plural polymer is usually a resin which is amorphous and soluble in an organic solvent (especially a common solvent which can dissolve a plurality of polymers). A resin having high moldability, film formability, transparency, and weather resistance, for example, a styrene resin, a (meth) acryl resin, an alicyclic hydrocarbon resin, a polyester resin, or a cellulose derivative. (cellulose esters, etc.) and the like are preferred. These plural polymers can be used in an appropriate combination. For example, a combination of plural polymers may have at least one polymer-based cellulose derivative, especially a cellulose ester (for example, cellulose diacetate, cellulose triacetate, cellulose acetate propionate, butyric acid acetate). Combination of other C4 alkyl carboxylic acid esters of cellulose and the like with other polymers. The glass transition temperature of the polymer may be selected, for example, from -100 to 25 (TC, -50 to 230 ° C, preferably about 0 to 200 ° C (for example, about 50 to 180 ° C). At least one of the rigid 'component polymers has a glass transition temperature of 50 ° C or higher (for example, -63-200809279, for example, about 70 to 200 ° C), preferably 10 ° C or higher (for example, 100 to 170 ° C). The weight average molecular weight of the polymer may be selected, for example, from 1, 〇0 〇, 〇00 or less (10,000 〜1, 〇〇〇, 〇〇〇 or so), and preferably from about 10,000 to 700,000.

In the present invention, a light scattering layer having a substantially isotropic co-continuous phase structure can be formed by using a wet method of a liquid phase evaporating solvent containing a plurality of polymers and spinodal decomposition, which is principlely independent of the compatibility of the plurality of polymers. Therefore, it is sufficient to combine a plurality of polymers which are mutually compatible, and it is usually easy to control by a spinodal decomposition phase separation structure, a co-continuous phase structure for high efficiency, and a complex polymerization of multi-system combination incompatibility (phase separation). Things. The plurality of polymers may be composed of a combination of the first polymer and the second polymer, and the first polymer and each of the first polymer may be composed of a plurality of resins. The combination of the first polymer and the second polymer is not particularly limited. For example, when the first polymer-based cellulose derivative (for example, a cellulose ester such as cellulose acetate propionate), the second polymer may be a styrene resin (polystyrene, styrene-acrylonitrile copolymer, etc.) , (meth) propylene oxime resin (such as polymethyl methacrylate), alicyclic olefin resin (such as a monomer of downholene), polycarbonate resin, or polyester resin ( The above-mentioned poly-C2-4 alkylene aryl ester-based copolyester or the like). The ratio of the first polymer to the second polymer is, for example, about 10/90 to 90/10 (weight ratio) of the former/the latter, and preferably about 20/80 to 80/20 (weight ratio), 30/70 to 70. The ratio of /30 (weight ratio) is better, and the ratio of 40/60 to 60/40 (weight ratio) is particularly preferable. If the proportion of one polymer is too high, the volume ratio of the separated phases is unbalanced, and the intensity of the scattered light is low. When a plurality of polymers are formed into a sheet of 3 or more, the content of each polymer may be usually selected from 1 to 90% by weight (for example, 1 to 70% by weight, preferably 5 to 70% by weight, preferably 10 to 70% by weight). The scope of). The light-scattering layer constituting the light-scattering sheet of the present invention has at least a co-continuous phase structure -64- 200809279

Made. The co-continuous phase structure is sometimes referred to as a co-continuous structure, a three-dimensional continuous or associated structure, and refers to a structure in which at least two components are continuous in phase (e.g., a network structure). The light scattering layer may have at least a co-continuous phase structure, and may have a structure in which a co-continuous phase structure and a droplet phase structure (independent or isolated phase structure) are mixed. However, the spinodal decomposition forms a co-continuous phase structure with phase separation, and promotes phase separation. The surface tension of the continuous phase itself is not continuous, and it becomes the island of the droplet phase structure (spherical, true spherical, etc.). structure). Therefore, depending on the degree of phase separation, an intermediate structure of the co-continuous phase structure and the droplet phase structure, that is, the phase structure in the process of moving from the co-continuous phase to the droplet phase, can also be formed. In the present invention, the above intermediate structure is also referred to as a co-continuous phase structure. When the phase separation structure is a mixed structure of a continuous phase structure and a droplet structure, the ratio of the droplet phase (individual polymer phase) may be, for example, 30% by volume or less, and 10% by volume or less. The shape of the co-continuous phase structure is not particularly limited, and the mesh shape is preferably a random mesh shape. The above-described co-continuous phase structure generally has an isotropic improvement in the plane of the layer or sheet, and is substantially isotropic. The average phase-to-phase distance of the co-continuous phase structure in any direction in the plane of the isotropic finger is substantially equal. The co-continuous phase structure is usually regular in the distance between phases (distance between the same phase). Therefore, the light incident on the sheet is reflected by the black light and is directed to the specific direction by the scattered light. Therefore, when mounted on a reflective liquid crystal display device, the transmitted scattered light can be directed in a certain direction, and the display screen can be made highly bright. The conventional particle-dispersion type transmissive light-scattering sheet cannot solve the problem, that is, the panel light source ( For example, images such as fluorescent lights can be avoided. The average phase-to-phase distance of the co-continuous phase of the light-scattering sheet is, for example, 0.5 to 20 // m (e.g., 1 to 20 μm), and more preferably 1 to 15 // m (e.g., 1 to 1 〇 from m). The average phase spacing is too small to obtain high scattered light intensity, and the average phase-to-phase distance is too large to transmit light. -65- 200809279 The directivity of light is low. The average phase-to-phase distance of the co-continuous layers can be calculated from the photos of a light-scattering layer or a light-scattering sheet of a microscope (penetrating microscope, phase contrast microscope, confocal laser microscope, etc.). It is also possible to measure the scattering angle of the scattered light by the method of the scatter directivity evaluation method (9), and calculate the average interphase distance d 〇2d· si η (0 / from the following black reflection condition formula). 2) = λ

(where d is the average interphase distance of the co-continuous layer, 0 is the scattering angle, and the wavelength of λ is the light.) [embossing] In the method of producing the light-scattering layer, an example of a method other than the anti-glare property using the light-transmitting particles is used. There is a method of producing a light scattering layer by an embossing method. The light-scattering layer produced by the embossing method is formed on a transparent substrate, and is essentially composed of an ionizing radiation-curable resin composition or a thermosetting resin composition which is formed by a matte-shaped shaped film having fine irregularities on its surface. Light diffusion layer. In the preferred method of producing the light-scattering layer, when the resin is an ionizing radiation-curable resin composition, the ionizing radiation-curable resin composition is applied onto the transparent substrate, and secondly, the coated ionizing radiation-curable resin composition is applied. In the uncured state, the surface of the coating film having a fine unevenness is laminated on the surface of the coating film, and the ionizing radiation is irradiated onto the coating film on which the shaping film is laminated, and the coating film of the ionizing radiation-curable resin composition is cured. Next, the shaped film is peeled off from the hardened ionizing radiation-curable resin coating film. When the resin is a thermosetting resin composition, the thermosetting resin composition is applied on the transparent substrate, and the surface of the coating film in the uncured state of the coated thermosetting resin composition is finely concavo-convex. a matte shaped film, followed by -66-200809279, which thermally laminates the above-mentioned coating film to harden the film, and secondly, it is preferably produced by a method of peeling off the shaped film from the cured thermosetting resin composition film. . When the laminated shaped film is coated on the uncured ionizing radiation-curable resin composition coating film, if the resin to be applied is diluted by a solvent, the solvent is dried and laminated, and the applied resin is not For solvent, direct lamination.

The film forming component of the ionizing radiation-curable resin composition for the light-diffusing layer of the embossing method is preferably an acrylate-based functional group, for example, a lower molecular weight polyester resin, a polyether resin, or an acryl resin. Oligomers or prepolymers of (meth) acrylates such as epoxy resins, urethane resins, alkyd resins, spiral ketone resins, polythiol olefin resins, polyhydric alcohols, and the like Monofunctional monomers such as ethyl (meth) acrylate, ethyl (meth) acrylate, styrene, styrene, N-vinyl pyrrolidone, and polyfunctional monomers, for example, trimethylolpropane tris(methyl) Acrylate, ethylene glycol (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, neopentyl alcohol tri (meth) acrylate, dixin The tetraol hexa(meth) acrylate, 1,6-hexanediol di(meth) acrylate, neopentyl glycol di(meth) acrylate, etc. are contained in a relatively large amount. It is especially preferred to use a mixture of polyester acrylate and urethane acrylate. The reason is that the polyester acrylate coating film is very hard and is suitable for obtaining hard coating properties, and the polyester acrylate alone has low impact resistance and brittleness, so that impact resistance and flexibility are imparted to the coating film. Polyurethane acrylate can be used. The blending ratio of the urethane acrylate is 100 parts by weight or less based on 100 parts by weight of the polyester acrylate. When this is exceeded, the coating film is too soft and the hardness is low. Further, when the ultraviolet curable resin composition is used as the ionizing radiation curable resin composition, the photopolymerization initiator may be a acetophenone, a bis-67-200809279 phenyl ketone or a Michelin benzoate. Benzyl methyl ester, α-pentyloxy ester, tetramethylthiocarbazone monosulfide, oxysulfonium, light sensitizer, such as n-butylamine, triethylamine, tri-n-butylphosphine, etc. In the present invention, a mixed oligomer urethane acrylate, a monomeric pentaerythritol hexa(meth) acrylate or the like is preferable. [High refractive index layer, medium refractive index layer] The film of the present invention has a high refractive index layer and a medium refractive index layer, and the low refractive index layer described later can improve the antireflection property by optical interference.

Hereinafter, in the present specification, the high refractive index layer and the medium refractive index layer are collectively referred to as a high refractive index layer. In the present invention, the refractive indices of the "high", "medium", and "low" surfaces of the high refractive index layer, the medium refractive index layer, and the low refractive index layer are related to each other. In terms of the relationship with the transparent support, the relationship of the tropism to the transparent support > low refractive index layer, high refractive index layer > transparent support is preferably established. In the present specification, the high refractive index layer, the medium refractive index layer, the low refractive index layer or collectively referred to as an antireflection layer. In order to construct a low refractive index layer on the high refractive index layer to form an antireflection layer, the refractive index of the high refractive index layer is preferably 1.55 to 2.40, more preferably 1.60 to 2.20, more preferably 1.65 to 2.10, and most preferably 1.80 to 2.00. . The medium refractive index layer, the high refractive index layer, and the low refractive index layer are sequentially applied to the support. When the antireflection film is formed, the refractive index of the high refractive index layer is preferably 1.65 to 2.40, more preferably 1.70 to 2-20. The refractive index of the medium refractive index layer is adjusted to be between the refractive index of the low refractive index layer and the refractive index of the high refractive index layer. The refractive index of the medium refractive index layer is preferably from 1.55 to 1.80. Specific examples of the inorganic particles used in the high refractive index layer and the medium refractive index layer are Ti〇2, Zr〇2, Αΐ2〇3, Ιη2〇3, Ζη〇, Sn〇2, Sb2〇3, ΐτ〇, and Si〇. 2 and so on. Ti〇2 and Zr〇2 are particularly preferred for high refractive index. The inorganic tantalum is preferably surface treated with a surface affinity of -68-200809279, which is better than the hospital affinity or affinity treatment. The surface treatment agent having a functional group reactive with the binder species on the surface of the material is suitable. The content of the inorganic particles in the high refractive index layer is preferably from 10 to 90% by mass based on the mass of the high refractive index layer, more preferably from 15 to 80% by mass, still more preferably from 15 to 75% by mass. It is also possible to use two or more kinds of inorganic particles in the high refractive index layer. When the low refractive index layer is present on the high refractive index layer, the refractive index of the high refractive index layer is preferably higher than the refractive index of the transparent support.

An ionizing radiation curable compound containing an aromatic ring, an ionizing radiation curable compound containing a halogenated element other than fluorine (for example, Br, I, C1, etc.), and an ionizing radiation curable compound containing atoms such as s, N, and P, etc. The binder obtained by the polymerization reaction is also suitable for the high refractive index layer. The film thickness of the high refractive index layer can be appropriately designed according to the use. When the high refractive index layer is used as the optical interference layer described later, it is preferably 30 to 200 nm, more preferably 50 to 170 nm, and particularly preferably 60 to 150 nm. The haze of the high refractive index layer is preferably as low as possible without the particles imparting antiglare function. 5% or less is preferred, 3% or less is preferred, and 1% or less is preferred. Preferably, the high refractive index layer is formed directly or in addition to other layers on the transparent support. 2_(4) Low refractive index layer In order to lower the reflectance of the film of the present invention, it is preferred to use a low refractive index layer. The refractive index of the low refractive index layer is preferably 〇.2〇~1 · 4 6 , 1.2 5~1.4 6 is better, 1.30~1.40 is preferably better. The thickness of the low refractive index layer is preferably 50 to 200 nm, 70 ~100nm is better. The haze of the low refractive index layer is preferably 3% or less, more preferably 2% or less, and still more preferably 1% or less. The strength of the specific low refractive index layer is preferably a pencil hardness test of 500 g or more, more preferably 2H or more, and more preferably 3H or more. -69- 200809279 In order to improve the antifouling performance of the protective film for polarizing plates, the contact angle of the surface with respect to water is preferably 90 degrees or more, more preferably 95 degrees or more, and more preferably 100 degrees or more. Preferred examples of the composition of the cured product include (1) a composition containing a fluoropolymer having a crosslinkable or polymerizable functional group, and (2) a composition containing a hydrolysis condensate of a fluorine-containing organodecane material as a main component. (3) A composition containing a monomer having two or more ethylenically unsaturated groups and inorganic fine particles having a hollow structure. (1) a fluorine-containing compound having a crosslinkable or polymerizable functional group

The fluorine-containing compound having a crosslinkable or polymerizable functional group is a copolymer of a fluorine-containing monomer and a monomer having a crosslinking or polymerizable functional group. Fluorine-containing mono-systems such as fluoroolefins (for example, vinyl fluoride, difluoroethylene, tetrafluoroethylene, hexafluoroethylene, hexafluoropropylene, perfluoro-2,2-dimethyl-1,3-dicarbazole, etc.) A part of (meth)acrylic acid or a completely fluorinated alkyl ester derivative (for example, BISCOTE 6FM (manufactured by Osaka Organic Chemical Co., Ltd.), M-2020 (manufactured by DAIKIN)), or a wholly or partially fluorinated vinyl ether. The same state of the monomer used to impart the crosslinkable group is, for example, a (meth) acrylate monomer having a crosslinkable functional group in the molecule, such as isopropyl methacrylate. In the same manner, after synthesizing the fluorinated copolymer with a monomer having a functional group such as a hydroxyl group, the substituent is further modified to introduce a monomer having a crosslinkable or polymerizable functional group. These monomers include (meth) acrylate monomers having a carboxyl group, a hydroxyl group, an amine group, a sulfonic acid group, etc. (for example, (meth)acrylic acid, hydroxymethyl (meth) acrylate, (meth) acrylate hydroxy group Alkyl ester, allyl acrylate, etc.). The latter is disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei 10-147739. The fluorinated copolymer may contain a suitable copolymerizable component from the viewpoints of solubility, dispersibility, coatability, antifouling property, antistatic property and the like. In particular, in order to impart antifouling property and slipperiness, it is preferable to introduce the polyoxymethylene, and it may be introduced into the side chain or may be introduced into the main chain. -70-200809279 A method of introducing a polyoxyalkylene moiety into a main chain, for example, using an azo group-containing polyoxyalkylene decylamine as described in JP-A-6-93100 (commercially available as VPS-0501, 1) A method of a polymer type initiator such as 〇〇1 (trade name; manufactured by WAKO Pure Chemical Industries, Ltd.). Moreover, a preferred method of introducing the side chain is, for example, j.

Appl. Polym. Sci. 2000, 78, 1 955, JP-A-56-28219, etc.

In the method of introducing a polyoxyalkylene having a reactive group at the end (for example, a SYRAPLANE series (manufactured by CHSS0)), a method of polymerizing a macromonomer containing a polyoxyxane One. A hardener having a suitable polymerizable unsaturated group may be used for the above polymer as described in JP-A-2000-17028. It is also preferred to use a compound having a fluorine-containing polyfunctional polymerizable unsaturated group as described in JP-A No. 2 0 0 2 - 1 4 5 9 5 . The compound having a polyfunctional polymerizable unsaturated group is, for example, a monomer having two or more ethylenically unsaturated groups as described above. The hydrolyzed condensate of the organic decane described in JP-A-2004-1 7090 1 is also preferable, particularly preferably a hydrolyzed condensate of an organic decane containing a (meth) acrylonitrile group. In particular, when these compounds have a polymerizable unsaturated group-containing compound, the effect of improving the scratch resistance is large, and it is preferable. When the polymer itself is not sufficiently hardenable, it can impart the necessary hardenability by blending a crosslinkable compound. For example, when the polymer body contains a hydroxyl group, it is preferred to use various amine-based compounds as the hardener. The amine compound used as the crosslinkable compound is, for example, a compound containing two or more of a hydroxyalkylamino group and an alkoxyalkylamine group, and a melamine compound, a urea compound, and a benzofluorene. An amine compound, an acetylene urea compound, or the like. For the hardening of these compounds, it is preferred to use an organic acid or a salt thereof. Specific examples of the fluoropolymers are described in JP-A-2003-222702, JP-A-2003-13832, and the like. -71· 200809279 (2) Hydrolyzed condensate of fluorine-containing organic decane material A composition containing a hydrolysis condensate of a fluorine-containing organic decane material as a main component is also preferable because of a low refractive index and a high surface hardness of the coating film. A condensate of a compound having a hydrolyzable stanol and a tetraalkoxydecane at the terminal end of the fluorinated alkyl group or both ends is preferred. The specific composition is described in JP-A-2002-265866 and 317152.

(3) A composition comprising a monomer having two or more ethylenically unsaturated groups and an inorganic fine particle having a hollow structure. Another preferred embodiment is a low refractive index layer composed of a low refractive index particle and a binder. The low refractive index particles may be organic or inorganic, and particles having pores inside are preferred. Specific examples of the hollow particles include the vermiculite particles described in JP-A-2002-7961. The refractive index of the particles is preferably 1.15 to 1.40, more preferably 1.20 to 1.30. The binder may be a monomer having two or more ethylenic unsaturated groups as described under the above light-diffusing layer. The low refractive index layer of the present invention is preferably a polymerization initiator described under the above-mentioned light scattering layer. When the radically polymerizable compound is contained, it is preferred to use 1 to 10 parts by mass of the polymerization initiator for the compound, more preferably 1 to 5 parts by mass. The low refractive index layer of the present invention may employ inorganic particles. In order to impart scratch resistance, particles having a particle diameter of 15 to 150%, preferably 30 to 1% by weight, more preferably 45 to 60% by weight of the low refractive index layer may be used. In order to impart properties such as antifouling property, water resistance, drug resistance, and slipperiness, a conventional polyoxynitride-based or fluorine-based antifouling agent, a lubricant, or the like can be appropriately added to the low refractive index layer of the present invention. [Antistatic layer] In the present invention, it is preferred that the antistatic layer has antistatic properties on the surface of the film. Forming an anti-72-

200809279 The method of the electrostatic layer is, for example, a method of applying a conductive coating liquid containing conductive fine particles and a reactive hard, or a method of forming a conductive thin film such as a metal oxide which forms a transparent film by vapor deposition or sputtering. . The primer layer is electrically conductive to the support directly or in contact with the adhesion of the support. Alternatively, the antistatic layer may be used as a part of the antireflection film. At this time, when it is near the outermost layer, the film is thin enough to obtain sufficient antistatic property. The thickness of the antistatic layer is preferably 0.01 to 1 (Mm is preferably 0.03 to 7//m 0.05 to 5 /zm. The surface resistance of the antistatic layer is 1 to 5 to 1012 [good, 105 to 109 Q/sq. Preferably, the 105-108Q/sq is particularly good. The antistatic layer resistance can be set by the four-probe method. The antistatic layer is preferably substantially transparent. Specifically, the antistatic degree is preferably 10% or less, and 5% or less. More preferably, it is preferably 3% or less. Wave; I has a transmittance of 50% or more, more preferably 60% or more, and 65% is preferably 70% or more. The antistatic layer of the present invention has high strength and resistance. The pencil hardness of the specific strength of the electrostatic layer is preferably Η or more, more preferably 2H or more, and 3H is more preferably 4 Η or more. [Coating solvent] Among the above constituent layers, a layer adjacent to the transparent substrate film is applied. It is preferable to dissolve at least one type of solvent of the transparent base film and to dissolve less than one type of solvent, and to prevent excessive penetration of the adjacent layer substrate film in such a manner, and to ensure the film properties of the adjacent layer and the transparent substrate. It is preferred that at least one of the solvents for dissolving the transparent substrate film has a boiling point higher than that of the solvent of the substrate film. The solvent with the highest boiling point in the solvent of the dissolving film and the genus and gold layer of the resin which does not dissolve the transparent substrate film can be formed. 5Used in a better, / / SQ surface layer of fog: 5 5 Onm : The temperature difference between the boiling point of the solvent with the highest solubility of the solvent in the range of 30-degree to 30-200809279, which is the highest in the solvent-soluble film. The mass ratio (A/B) of the total amount of the solvent (A) which can dissolve the transparent substrate film to the total amount of the solvent (B) which does not dissolve the transparent substrate film is preferably 5/95 to 50/50, 10/. 90~40/60 is better, 15/85~30/70 is especially good. [Formation of layers]

For the coating layer of the present invention and, if necessary, the hard coat layer, the low refractive index layer or the other layer, the coating liquid is applied to the transparent support, heated and dried, and then, if necessary, illuminated and/or heated, The monomers forming the respective layers and the curable resin are cured. Thereby each layer is formed. In the film of the present invention, the coating method of each layer is not particularly limited, and may be applied by a dipping method, an air knife coating method, a curtain coating method, a roll coating method, a wire coating method, a concave roll coating method, or an extrusion coating method (die). A conventional method such as a coating method (refer to the specification of U.S. Patent No. 268 1 294) or a micro-concave coating method, in which the micro-concave coating method and the die coating method are used from the viewpoint of high productivity and uniformity of coating film. good. The preferred condition for drying is that the concentration of the organic solvent in the applied liquid film is 5% by mass or less, more preferably 2% by mass or less, and particularly preferably 1% by mass or less. The drying conditions are affected by the heat strength of the transparent substrate film, the transport speed, the length of the drying step, and the like, and the lower the organic solvent content is, the better the film hardness and adhesion are prevented. When the organic solvent is not contained, the drying step can be omitted, and after application, it is irradiated with ultraviolet rays. In order to increase the degree of crystallinity, the coating layer of the present invention may also be subjected to heat treatment. The heat treatment temperature is preferably 40 to 130 ° C, and the heat treatment time can be appropriately determined depending on the crystallinity necessary, and is usually about 5 minutes to 48 hours. In order to improve the adhesion between the transparent base film and the coating layer, it is necessary to apply a hydrophilization treatment or a concavo-convex treatment to one or both sides of the transparent substrate film as needed. Pretreatment includes corona discharge treatment, glow discharge treatment, chromic acid treatment (wet), alkalization treatment (wet), flame treatment, hot air treatment, ozone/ultraviolet irradiation treatment, corona discharge treatment, glow discharge treatment, Alkalinization (wet) is especially preferred. [Undercoat layer] The undercoat layer on the rain side or the side of the coating layer in the present invention will be described. The undercoat layer may be composed of one layer or two or more layers. In the present invention, it is more preferable to provide an undercoat layer having a two-layer structure as described below between the transparent support/coating layer.

The first layer: the second layer of the antistatic layer containing water-dispersible or water-soluble synthetic resin, carbodiimide compound and conductive metal oxide particles as essential components: water-dispersible or water-soluble synthetic resin and crosslinking agent Surface layer of essential components

The undercoat layer is provided on the support in the order of the antistatic layer and the surface layer. The antistatic layer of the present invention imparts conductivity such that the low electrostatic support of the antistatic layer on the support has a haze of 3% or less, and the surface resistance of the surface layer of the obtained sensor is lxlO6~1 xlO11 Ω. . By providing the antistatic layer, it is possible to suppress the loss of dirt adhesion due to static electricity during the use of the plastic support and the process. The antistatic layer is a layer containing conductive metal oxide particles, and generally contains a binder. The conductive metal oxide particles are preferably acicular particles, and the ratio of the major axis to the minor axis (long axis/short axis) is preferably 3 to 50. The long axis/short axis is preferably 10 to 50. The short axis of such acicular particles is preferably 0.001 to 0.1 // m, and particularly preferably 0.01 to 0.02 / / m. The long axis is preferably 0.1 to 5.0 #m, and particularly preferably 0.1 to 2.0 μm. The material of the conductive metal oxide particles is zn〇, Ti〇2, Sn〇2, Al2〇3, In2〇3, Mg〇, Ba〇, and Mo〇3, and composite oxides thereof, and -75- 200809279 These metal oxides which contain a hetero atom in the metal oxide. The metal oxide is preferably Sn 2 , Zn 〇, Al 2 〇 3 , Ti 〇 2 , In 2 〇 3 and Mg , , and Sn 〇 2 , Zn 〇 , In 2 〇 3 and TiCh are more preferable, and SnCh is particularly preferable. Examples of a small amount of heterogeneous atoms include A1 or In for ZnO, Nb or Ta for Ti〇2, Sn for In2〇3, and Sb, Nb or halogen for SnS2. ~30 mol% (preferably 0.1 to 10 mol%) doping. When the amount of the dissimilar element is less than 1% by mole, sufficient conductivity cannot be imparted to the oxide or the composite oxide. When the amount of the dissimilar element is more than 3 〇moφ, the degree of blackening of the particle increases, and the antistatic layer is blackened. Not suitable for use as a polarizer protective film. Therefore, the material of the conductive metal oxide particles in the present invention is preferably such that the content of the dissimilar elements of the metal oxide or the composite metal oxide is lower. It is also preferable to have an oxygen deficiency in the crystal structure. The above-mentioned small amount of heterogeneous atom-containing conductive metal oxide particles is preferably ruthenium-doped Sn 〇 2 particles, and ruthenium is preferably doped with 0.2 to 2.0 mol% of Sn 〇 2 particles. Therefore, in the present invention, a metal oxide particle such as a short-axis or a long-axis size such as the above-mentioned antimony-doped Sn 〇 2 is used, which is advantageous for forming a transparent and excellent electroconductive antistatic layer. By this, it is easy to obtain a polarizing plate protective film having a low electrostatic support φ body and a surface resistance of surface layer IxlO^lQHQ. The reason why a short-axis, long-axis size such as the above-mentioned acicular metal oxide particles (e.g., yttrium-doped Sn 〇 2) can be favored to form a transparent and highly conductive antistatic layer is as follows. The acicular metal oxide particles extend parallel to the surface of the antistatic layer in the longitudinal direction of the antistatic layer, and the short axis diameter occupies the direction of the layer thickness. As described above, the acicular metal oxide particles are more likely to have a higher conductivity than a usual spherical particle because they extend in the long axis direction. Therefore, the surface resistance can be lowered without impairing transparency. The short axis diameter of the above acicular metal oxide particles is usually less than or approximately equal to the thickness of the antistatic layer, and there is little protruding surface, even if the protruding portion is only extremely small, it can be formed almost on the electrostatic layer of anti-76-200809279. The surface layer is completely covered. Therefore, in the transport of the polarizing plate protective film, the advantage of the whitefly caused by the partial peeling of the protruding portion of the layer is hardly generated. The antistatic layer of the present invention generally contains a binder which disperses and supports conductive metal oxide particles. The material of the binder may be various polymers such as an acrylic resin, a vinyl resin, a polyurethane resin, and a polyester resin. From the viewpoint of preventing whitefly, a polymer (preferably an acryl resin, a vinyl resin, a urethane resin or a polyester resin) and a cured product of a carbodiimide compound are preferred. In the present invention, from the viewpoint of maintaining a good working environment and preventing atmospheric pollution by φ, it is preferred to use a water-soluble polymer, a carbon dioxide or an imine compound, or a water-dispersed state such as an emulsion. The polymer is capable of reacting with a carbodiimide compound and has any one of a methylol group, a hydroxyl group, a carboxyl group and an amine group. The hydroxyl group and the carboxyl group are preferred, and the carboxyl group is particularly preferred. The content of the hydroxyl group or the carboxyl group in the polymer is preferably 0.0001 to 1 equivalent/1 kg, more preferably 0.001 to 1 equivalent/lkg.

The acryl resin includes acrylates such as acrylic acid and alkyl acrylate, methacrylates such as acrylamide, acrylonitrile, methacrylic acid, and alkyl methacrylate, and methacrylamide and methacrylonitrile. A monomer of any monomer or a copolymer obtained by polymerizing two or more of these monomers. Among these, a monomer such as an acrylate such as an alkyl acrylate or a methacrylate such as an alkyl methacrylate, or a copolymer obtained by polymerizing two or more of these monomers is preferred. . There are, for example, a monomer of any one of acrylates and methacrylates having an alkyl group having 1 to 6 carbon atoms or a copolymer obtained by polymerizing two or more of these monomers. The above-mentioned acrylic acid resin is mainly composed of the above composition, and is a monomer which can be crosslinked with a carbodiimide compound, and partially used as a monomer such as a methylol group, a hydroxyl group, a carboxyl group or an amine group. polymer. The above vinyl resin is, polyvinyl alcohol, acid modified polyvinyl alcohol, polyethylene -77- 200809279

Alcohol, polyvinyl butyral, polyvinyl methyl ether, polyolefin, ethylene/propylene copolymer, polyvinyl acetate, vinyl chloride/vinyl acetate copolymer, vinyl chloride/(meth)acrylate Copolymer and ethylene/vinyl acetate copolymer (preferably ethylene/ethyl acetate/(meth)acrylate copolymer). Among these are polyvinyl alcohol, acid-modified polyvinyl alcohol, polyvinyl formal, polyolefin, ethylene, tetrabutyl copolymer and ethylene/vinyl acetate copolymer (preferably ethylene/vinyl acetate). An ester/acrylate copolymer) is preferred. The above vinyl resin is capable of crosslinking reaction with a carbodiimide compound, polyvinyl alcohol, acid-modified polyvinyl alcohol, polyvinyl formal, polyvinyl butyral, polyvinyl methyl ether and polyvinyl acetate. The ester is, for example, a polymer having a hydroxyl group remaining in the polymer as a hydroxyl group, and the other polymer portion is crosslinkable using a monomer having, for example, any one of a methylol group, a hydroxyl group, a carboxyl group and an amine group. polymer. The above polyurethane resin is derived from a polyhydroxy compound (for example, ethylene glycol, propylene glycol, glycerin, trimethylolpropane), an aliphatic polyester-based polyol obtained by reacting a polyhydroxy compound with a polybasic acid, and a polyether polyol (for example). Any of a poly(oxypropylene ether) polyol, a poly(oxyethylene ether) polyol, a polycarbonate polyol and a polyethylene terephthalate polyol, or a mixture of these and a polyisocyanate. The above polyurethane resin, for example, after reacting a polyhydric alcohol with a polyvalent isocyanate, can use the remaining unreacted hydroxyl group as a functional group capable of crosslinking reaction with the carbodiimide compound. The above polyester resin is generally a polymer obtained by reacting a polyhydroxy compound (e.g., ethylene glycol, propylene glycol, glycerin, trimethylol propylene) with a polybasic acid. The above-mentioned polyester resin can be used, for example, after the reaction of the polyol with the polybasic acid, and the remaining unreacted hydroxyl group or carboxyl group can be used as a functional group capable of crosslinking reaction with the carbodiimide compound. Of course, a third component having a functional group such as a hydroxyl group may also be added. -78- 200809279 Among the above polymers, acryl resin and urethane resin are preferred, and propylene oxime resin is preferred. The carbodiimide compound used in the present invention is preferably a compound having a complex carbodiimide structure in the molecule. The polycarbodiimide is usually synthesized by a condensation reaction of an organic diisocyanate. Here, the organic group of the organic diisocyanate used in the compound having a complex carbodiimide structure in the synthesis molecule is not particularly limited, and may be an aromatic system or an aliphatic system or a mixed system of the aliphatic system. The view of sex is especially good for aliphatics. As the synthetic raw material, an organic isocyanate, an organic diisocyanate, an organic triisocyanate or the like can be used. The organic isocyanate may, for example, be an aromatic isocyanate, an aliphatic isocyanate, and the like. Specifically, 4,4'-diphenylmethane diisocyanate and 4,4-diphenyldimethylmethane can be used.

Diisocyanate ' 1,4-benzene diisocyanate, 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, hexamethylene diisocyanate, cyclohexane diisocyanate, xylene diisocyanate, 2,2,4- Trimethylhexamethylene diisocyanate, 4,4'-dicyclohexanemethane diisocyanate, 1,3-benzene diisocyanate, etc., isophorone isocyanate, phenyl isocyanate, cyclohex isocyanate, butyl isocyanate, naphthalene isocyanate Wait. The carbodiimide-based compound to be used in the present invention is commercially available, for example, as CARBODILITE V-02-L2 (trade name: manufactured by Nisshinbo Co., Ltd.). The carbon-* subliminal compound of the present invention is preferably added in an amount of from 1 to 2,000% by mass based on the binder, more preferably from 5 to 100% by mass. The formation of the antistatic layer of the present invention is, for example, first, the conductive metal oxide particles are directly or dispersed in a solvent such as water (including a dispersant or a binder if necessary) -79- 200809279

The dispersion is added, mixed (if necessary) dispersed in an aqueous dispersion or aqueous solution containing the above-mentioned binder (for example, a polymer, a carbodiimide compound, and a suitable additive) to prepare a coating liquid for forming an antistatic layer. The above antistatic layer may be applied to the above-mentioned antistatic layer forming coating solution by a conventional coating method such as a dip coating method, an air knife coating method, a curtain coating method, a roll coating method, a wire coating method, or a concave roll coating method. , extrusion coating, etc. are applied to the surface of a plastic film such as polyester (on the side where the photosensitive layer is not provided). The coated plastic film such as polyester may be applied to the surface of the plastic support body for coating the antistatic layer before, after the biaxial stretching, before the biaxial stretching, after the uniaxial stretching or after the biaxial stretching. It is preferred to apply a surface treatment such as ultraviolet treatment, corona treatment, glow discharge treatment, or the like. The layer thickness of the antistatic layer of the present invention is preferably 0.01 to 1/zm, more preferably 0.01 to 0.2/zm. When it is less than 0 · 0 1/z m, it is difficult to apply the coating agent uniformly, and it is easy to produce a coating. When the thickness exceeds 1 μm, the antistatic property and the scratch resistance may be poor. The conductive metal oxide particles are preferably contained in the antistatic layer in an amount of 10 to 1000% by weight, preferably 100 to 50,000% by weight, based on the total amount of the binder (for example, the above polymer and the carbodiimide compound). If it is less than 10% by weight, it should not be sufficiently antistatic. When it exceeds 1 000% by weight, the haze is too high. If necessary, additives such as a matting agent, a surfactant, and a slip agent may be used for the antistatic layer of the present invention and the surface layer described below. The matting agent may be an oxide particle such as cerium oxide, aluminum oxide or magnesium oxide having a particle diameter of 0.001 to 10 μm, or a polymer such as polymethyl methacrylate or polystyrene or a copolymer. The surfactant is a conventional anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, and the like. The slip agent may be a natural wax such as palm wax or a phosphate ester of a higher alcohol having a carbon number of 8 to 22 or an amine salt thereof; palmitic acid, stearic acid, rosin acid and an ester thereof; and a polyfluorene-based compound. -80- 200809279 In the present invention, a surface layer is provided on the antistatic layer. The surface layer is mainly provided to impart adhesion to the adhesive layer and to enhance the function of preventing the peeling of the conductive metal oxide particles in the antistatic layer. The material of the surface layer is generally preferably a polymer such as acryl, a vinyl resin, a urethane resin or a polyester resin, as the binder in the antistatic layer. The crosslinking agent used for the surface layer is preferably an epoxy compound. The epoxy compound is 1,4-bis(2',3'-epoxypropoxy)butane, 1,3,5-three

Glycidyl isocyanate, 1,3-diepoxypropane-5-(r-acetyloxy-oxypropyl) isocyanate, sorbitol polyglycidyl ether, polyglycerol polyglycidyl ether, neopentyl Alcohol polyglycidyl ethers, diglycerin polyglycidyl ether, 1,3,5-triepoxypropane (2-hydroxyethyl) isocyanate, glycerol polyglyceryl ether and trimethylolpropane polyglycol Epoxy compounds such as ethers are preferable, and specific commercial products thereof include, for example, DENACOL EX-521 and EX-614B (manufactured by NAGASE Chemical Industries Co., Ltd.), but are not limited thereto. Other compounds may also be used in a range that does not affect the optical properties, such as CEK Meers and TH James, "The Theory of the Photographic Process", 3rd edition (1966), US Patent No. 3,316,095, and 3,232,764. Same as 328 8775, the same as 2732303, the same as 3635718, the same as 3 232763, the same as 27323 16 , the same 2586 1 68, the same 3 1 03437, the same 3017280, the same 29836 1 1 , the same 2725294, Same as 2725295, the same as 3 1 00704, the same as 309 1 5 37, the same 3 32 1 3 1 3, the same 3543 292 and the same 3 1 25449, and the British Patent 994869 and the same 1 1 67207 Hardeners, etc. Representative examples include melamine compounds containing two or more (preferably three or more) hydroxymethyl groups and/or alkoxymethyl groups, and such polycondensate melamine resins or diammamines/urea resins, viscous chlorine Acid, viscous acid, viscous oxygen acid, viscous-81- 200809279 phenoxy bromo acid, formaldehyde, glyoxal, mono-glyoxal, 2,3-dihydroxy-1,4 - brothel, 2,3 - aldehyde compounds such as dihydroxy-5-methyl-1,4-dioxane succinaldehyde, 2,5-dimethoxytetrahydrofuran and glutaraldehyde and derivatives thereof; divinylsulfonyl-N,N' - Ethylene (ethylene sulfonamide), 1,3-bis(vinylsulfonyl)-2-propanol, methylenebis-cis-butenylene diimide, 5-ethylidene-1,3-dipropyl An active vinyl compound such as hexahydro-s-tripper, 1,3,5-tripropylene hexahydro-s-tripper and 1,3,5-triethylenesulfonylhexahydro-s-triterpene; 2,4-Dichloro-6-hydroxy-s-tri-trap sodium salt, 2,4-dichloro-6-(4-sulfoanilino)-S-φ tri-trap sodium salt, 2,4-dichloro -6-(2-sulfonic acid ethylamino)-S-tripper and active halogen compounds such as n,N,-bis(2-chloroethylaminemethanyl) pipe trap; bis(2,3-epoxy) Propyl) methyl propyl Ammonium, p-toluenesulfonate, 2,4,6-triethylenetriene, 1,6-hexamethylene-N,N'-diethylene urea, and bis-/3-ethyleneimine, ethylene sulfide, etc. Amine compound; methane such as 1,2-di(methanesulfonyloxy)ethane, iota, 4,di(methanesulfonyloxy)butane, and 1,5-di(methanesulfonyloxy)pentane a sulfonate-based compound; a dicyclohexylene carbon-Asian female and a carbodiimide compound such as 1-cyclohexyl 3-(3-dimethylaminopropyl)carbodiimide hydrochloride; dimethylisoxazole, etc. Isoxazole-based compound; inorganic compound such as chrome tanning and acetic acid; chromium; N-ethoxycarbonyl-2-isopropoxy-1,2-dihydroquinoline and N-(l-morpholinecarboxyl) chloride- Dehydro-condensed peptide reagent such as 4-methylpyridinium; anthracene, Ν'-hexane dioxodisuccinimide and an active ester such as hydrazine, Ν'-p-dioxodibutane diimine The compound is an isocyanate such as toluene-2,4-diisocyanate or 1,6-hexamethylene diisocyanate; and an epichlorohydrin compound such as a polyamine-polyamine-epichlorohydrin reaction product, but is not limited thereto. In order to form the surface layer of the present invention, first, the above polymer, an epoxy compound, and an appropriate additive are added and mixed (if necessary, dispersed) to prepare a surface layer coating liquid, for example, a solvent such as water (including a dispersant or a binder if necessary). . The above surface layer can be applied to the antistatic layer of the present invention by a conventional coating method, -82-200809279, for example, a dip coating method, an air knife coating method, a curtain coating method, a wire coating method, a concave roll coating method, and extrusion. The surface layer coating liquid is applied by a press coating method. The layer thickness of the above surface layer is preferably 0.01 to 1/zm, more preferably 0.01 to 0.2 #m. If it is less than 〇.〇lem, the function of preventing the conductive metal oxide particles of the antistatic layer from falling off is insufficient. When it exceeds 1 // m, it is difficult to uniformly apply the coating liquid, and it is easy to cause spotting of the product.

In the present invention, the coating layer and the hard coat layer are formed to contain an antifouling agent, and a low surface energy curable resin containing fluorine and/or sand is contained, and the hardening composition which is hardened by ultraviolet irradiation is laminated in the main system. The antifouling layer can be an antifouling coating. The antifouling agent to be used in the present invention is a material which imparts antifouling properties such as water repellency and oil repellency to the coating layer, and is not contained in the coating liquid for coating layer formation and is applied to the transparent substrate film. Further, when the antifouling coating layer is formed, the surface of the antifouling coating layer is not particularly limited as long as it has water repellency and oil repellency, and there is a hardened resin containing fluorine and/or cerium. [Current Resin-Based Resin] The fluorine-containing and/or antimony-containing curable resin contained in the coating layer or the anti-fouling layer of the present invention is a conventional fluororesin resin or a cerium-curable resin. Or a curable resin having a block of a fluorine-containing and a ruthenium-containing portion, and a curable resin containing a segment which is compatible with a resin or a metal oxide, and a fragment of fluorine or ruthenium, preferably added to the coating layer. Or the antifouling layer can concentrate fluorine or sand on the surface. These curable resins are specifically, block copolymers of fluorine- or fluorene-containing monomers and other hydrophilic or lipophilic monomers, or graft copolymers. The fluorine-containing monomer is represented by hexafluoroisopropyl acrylate, heptafluorodecyl acrylate, perfluoroalkylsulfonamide ethyl acrylate, perfluoroalkyl guanamine ethyl acrylate, etc., and contains perfluoroalkane. Base (meth) acrylate. The ruthenium-containing monomer has a polyoxyalkylene oxide and a (meth) propyl-83-200809279 olefinic acid or the like having a decyloxyalkyl group. The hydrophilic or lipophilic monomer is a (meth) acrylate such as methyl acrylate, a polyester having a hydroxyl group at the end, an ester of (meth)acrylic acid, a hydroxyethyl (meth)acrylate, or a polyethylene glycol (A). Base) acrylate and the like.

Commercially available sclerosing resins include propylene-based oligomers having a perfluoroalkyl chain microdomain DEFENCER MCF-300, DEFENCER IvICF-312, DEFENCER

MCF-323, etc., perfluoroalkyl-lipophilic group-containing oligomers MEGAFAC F-170, MEGAFAC F-173, MEGAFAC F-175, etc., perfluoroalkyl-hydrophilic group-containing oligomer MEGAFAC F- 171, etc. (manufactured by Dainippon Ink Chemicals Co., Ltd.), a block polymer of a vinyl monomer composed of a surface migration excellent fragment and a resin-compatible fragment, and a fluorinated alkyl-based MODIPER F-200 , MODIPER F-220, MODIPER F-600, MODIPER F-820, etc., MODIPER FS-700, MODIPER FS-710, etc. (above), for anti-fouling on the coating The layer is preferably a low-surface energy-hardening resin having a fluorine atom, and the like, and the like, and the like, and the like, and the like, and the like, and the like, which are disclosed in Japanese Laid-Open Patent Publication No. Hei 57-34526 The fluorinated hydrocarbon group-containing cerium-curable resin, the fluorine-containing hydrocarbon group-containing polymer, and the like. When the protective film for a polarizing plate of the present invention is used as at least one of the two polarizing film surface protective films to form a polarizing plate, the transparent substrate film on the opposite side to the coating layer of the protective film for a polarizing plate is used. The surface is hydrophilized to improve the adhesion of the adhesive surface. The hydrophilized surface is effective for improving the adhesion to the adhesive layer of the main component polyvinyl alcohol. The hydrophilization treatment is preferably carried out by the following alkalization treatment. Further, in the present invention, the alkalizing treatment is preferably carried out as the pretreatment before the formation of the coating layer. [Inspection treatment] -84- 200809279 (1) The lye immersion method is a method of immersing a protective film for a polarizing plate in an alkali solution under appropriate conditions, and performing alkalization treatment on all surfaces of the entire surface of the membrane with reactivity with alkali. Because it does not require special equipment, the cost is better. The lye is preferably an aqueous sodium hydroxide solution. The concentration is preferably 0.5 to 3 mol/L, more preferably 1 to 2 mol/L. The liquid temperature of the lye is preferably 30 to 75 ° C, more preferably 40 to 60 ° C.

The combination of the above alkalizing conditions is preferably combined with each other under milder conditions. It can be set according to the material, structure, and target contact angle of the light-scattering film and the anti-reflection film. After soaking in the alkali solution, the water is sufficiently washed with water until the alkali-free component remains in the film, and it is preferred to soak it in a dilute acid to neutralize the alkali component. The surface of the transparent support having the antiglare layer and the antireflection layer and the reverse side surface are hydrophilized by alkalization treatment. The protective film for a polarizing plate is used by adhering a hydrophilic surface of a transparent support to a polarizing film. The hydrophilized surface is effective for improving the adhesion to the adhesive layer of the main component polyvinyl alcohol. From the viewpoint of adhesion to the polarizing film, the alkalization treatment is such that the surface of the transparent support having the anti-glare layer and the anti-reflection layer side is smaller as the contact angle with water is better, and the immersion is simultaneously performed. It is important that the surface of the anti-glare layer and the anti-reflection layer is damaged by the alkali to the inside, and the minimum necessary reaction conditions are important. The index of damage to the alkali of each layer is the water contact angle of the opposite side of the transparent support, especially in the case of transparent support system of triacetyl cellulose, preferably 10 to 50 degrees, more preferably 30 to 50 degrees, 40 to 50. Especially good. Above 50 degrees, it is not good because of adhesion to the polarizing film. On the other hand, if the temperature is less than 10 degrees, the damage is too large and the physical strength is not good. (2) Method of applying alkali liquor -85 - 200809279

In the above immersion method, a preferred means for avoiding damage to each film is to apply lye to the opposite side of the surface of the anti-glare layer and the anti-reflection layer under appropriate conditions, and to heat, wash, and dry the lye. Apply the law. In this case, the application means that the surface to be alkalized is contacted with an alkali solution or the like, and the coating contains a spray, a contact with a liquid-containing belt, or the like. These methods are used because of the need for additional lye coating equipment and steps, and the cost is not as good as the immersion method of (1). However, since only the alkalized surface is in contact with the alkali, the reverse side may have a layer of a raw material which is weak to alkali. For example, the vapor deposition film or the sol-gel film is affected by various effects such as corrosion, dissolution, and peeling of the alkali solution, and the soaking method is not preferable, and the coating method can be used because it is not in contact with the liquid. The alkalization method of any of the above (1) and (2) can be carried out by winding up the respective layers from the roll-form support, and it is also possible to continue the operation after the above-described antiglare layered anti-reflection film process. Similarly, the bonding step of the polarizing plate composed of the rolled-out support is also continuously performed, that is, the polarizing plate can be produced with higher efficiency than the monolithic operation. (3) The alkalization method of protecting the antiglare layer and the antireflection layer by the laminated film is as in the above (2), and when the antiglare layer and/or the low refractive index layer is insufficient in resistance to alkali liquid, after forming the final layer The laminated film was laminated on the surface on which the final layer was formed, and then immersed in an alkali solution to hydrophilize only the surface of the triacetyl cellulose on the opposite side of the surface on which the final layer was formed, and then the laminated film was peeled off. In this method, the anti-glare layer and the low-refractive-index layer are not damaged, and the necessary hydrophilization treatment as the polarizing plate protective film is performed only on the reverse side of the surface on which the final layer of the triacetyl cellulose film is formed. Compared with the method of the above (2), there is a production of laminated film waste, but the advantage is that no special lye coating is required.

(4) The method of immersing only in the lye after forming the anti-glare layer only the anti-glare layer is resistant to the lye, while the low refractive index layer sometimes has insufficient resistance to alkali-86-200809279, and can be formed only The anti-glare layer is then immersed in an alkali solution for hydrophilization on both sides, and then a low refractive index layer is formed on the anti-glare layer. Although the process is complicated, it is advantageous in that the low-refractive-index layer-based fluorine-containing sol-gel film is hydrophilic, and the interlayer adhesion of the antiglare layer and the low refractive index layer is improved. (5) Method for forming a coating layer on a pre-alkaline triethylene fluorene cellulose film

Alternatively, the triethylene fluorene cellulose film may be alkalized by immersing it in an alkali solution or the like, and the coating layer may be formed directly on or in another layer. When immersed in an alkali solution and alkalized, the interlayer adhesion of the coating layer and the triacetyl cellulose surface which is hydrophilized by alkalization deteriorates. In this case, after the alkalization, only the surface on which the coating layer is formed may be subjected to a corona discharge, a glow discharge or the like to remove the hydrophilized surface to form an antiglare layer or other layer. Further, when the antiglare layer or other layer has a hydrophilic group, the interlayer adhesion may be good. A polarizing plate using the protective film for a polarizing plate of the present invention and a liquid crystal display device using the polarizing plate will be described below. [Production of Polarizing Film] The polarizing plate protective film (protective film for polarizing plate) of the present invention is bonded to at least one surface of the polarizing member to constitute a polarizing plate. The other side of the polarizing member is preferably a polarizing plate protective film having a moisture permeability of 700 to 3000 g/m2·day, preferably 1000 to 1700 g/m2·day. The TAC usually used is applicable. A cellulose acetate film which is usually formed by a solution film forming method and which is stretched in the width direction in a film form at a stretching ratio of 10 to 100% can also be used. The polarizing plate of the present invention may be one side of the polarizing plate protective film of the present invention, and the other protective film may be an optical compensation film of an optically anisotropic layer composed of a liquid crystalline compound. Further, the polarizing plate of the present invention may also be a polarizing plate protective film of the present invention, -87-200809279, and the film of the film is Re0 to 10 nm, and the Rth is a film of -20 to 20 nm (refer to, for example, Open paragraph number [〇〇95] of the Gazette No. 2005-30 1 227. The polarizing film includes an iodine-based polarizing film, a dye-based polarizing film using a dichroic dye, and a polyolefin-based polarizing film. The iodine-based polarizing film and the dye-based polarizing film are generally produced by using a polyvinyl alcohol film.

Among the two protective films of the polarizing member, the film ' other than the polarizing plate protective film of the present invention is preferably an optical compensation film having an optical compensation layer composed of an optically anisotropic layer. The optical compensation film (retardation film) can improve the viewing angle characteristics of the liquid crystal display screen. The optical compensation film is preferably a conventional one, and an optical compensation film described in JP-A-2001-100042 is preferred. When the polarizing plate protective film of the present invention is used together with a liquid crystal display device or the like, it is preferably disposed on the viewing side opposite to the liquid crystal element. &lt;&lt;Liquid Crystal Display Device&gt;&gt; The film or polarizing plate of the present invention can be used for an image display device such as a liquid crystal display device, and is preferably used for the outermost layer of the display. The liquid crystal display device has a liquid crystal element and two polarizing plates disposed on both sides thereof, and the liquid crystal element carries liquid crystal between the two electrode substrates. Further, the optical anisotropic layer may be disposed between the liquid crystal element and a polarizing plate, or may be disposed between the liquid crystal element and the polarizing plates of the two. The liquid crystal element is preferably a TN mode, a VA mode, an OCB mode, an IPS mode or an ECB mode. < TN mode> The TN mode liquid crystal element is substantially horizontally aligned when no voltage is applied, and is 60. ~120° twisted alignment. TN mode liquid crystal elements are most commonly used in color TFT liquid crystal display devices, and there are a large number of documents described in the document -88-200809279. &lt; VA mode &gt; The VA mode liquid crystal element is substantially vertically aligned when the voltage is applied without a voltage.

The VA mode includes (1) a narrow VA mode liquid crystal cell in which a rod-like liquid crystal molecule is substantially vertically aligned when no voltage is applied, and a substantially horizontal alignment when a voltage is applied (for example, as described in JP-A-2-17662), 2) For expanding the viewing angle, VA is multi-domain (MVA mode) liquid crystal elements (such as SID97, Digest of Tech. Papers 28 (1 997) 845), (3) rod-like liquid crystallinity The molecules are substantially vertically aligned when no voltage is applied, and the liquid crystal elements of the multi-domain alignment (n-ASM mode) are twisted when a voltage is applied (as described in Japanese Liquid Crystal Workshop Pre-Collection 58~5 9 (1 998)), and (4) SURVAIVAL mode liquid crystal element (published in LCD INTERNATIONAL 98) ° &lt; 0CB mode &gt; 0CB mode liquid crystal element system, in the upper and lower liquid crystal element, the rod-like liquid crystal molecules are substantially in the opposite (symmetric) alignment bending alignment The mode liquid crystal element is shown in the specification of the US Patent No. 458 3 8 25 and the same as No. 54 10422. Since the rod-like liquid crystal molecules are symmetrically aligned in the upper and lower portions of the liquid crystal element, the curved alignment mode liquid crystal element has a self-optical compensation function. Therefore, this liquid crystal mode is called a 0CB (0ptically Compensatory Bend) liquid crystal mode. The curved alignment mode liquid crystal display device has the advantage of a high response rate. &lt; IPS mode> IPS mode liquid crystal element system, which applies a transverse electric field to the nematic liquid crystal for exchange, such as Proc. IDRC (Asia Display ' 9.5), P. 577-580 and ρ· 707-7 1 0 stated. -89 - 200809279 &lt; ECB mode &gt; ECB mode liquid crystal element system, the rod-like liquid crystal molecules are substantially horizontally aligned when no voltage is applied. One of the simplest liquid crystal display modes of the E C B system structure is described in detail in Japanese Laid-Open Patent Publication No. Hei 5-203946. &lt;Brightness Enhancement Film&gt;

The brightness enhancement film system has a polarization conversion element that can separate light emitted from a light source (backlight) into a function of transmitting polarized light, reflecting polarized light, or scattering polarized light. The brightness enhancement film can use the return light from the backlight by reflecting polarized light or scattering polarized light to improve the efficiency of linear polarized light emission. There are, for example, anisotropic reflective polarizers. The anisotropic reflective polarizer has an anisotropic multiple film which transmits a linearly polarized light in the direction of vibration and a linearly polarized reflection in the other direction of vibration. The anisotropic multiple film is, for example, a DBF manufactured by 3M (refer to, for example, JP-A-4-268505). The anisotropic reflective polarizer has a composite of a cholesteric liquid crystal and a λ/4 plate. This composite has a PCF manufactured by Nitto Denko (refer to Japanese Patent Laid-Open Publication No. Hei 1 -23 1 1 30, etc.). The anisotropic reflective polarizer has a reflective lattice polarizer. The reflective grid polarizer is a metal grid reflective polarizer in which a metal is subjected to microfabrication and is also reflected and polarized in the visible light range (refer to the specification of US Pat. No. 628 8840, etc.), and the polymer matrix is doped with metal particles and extended ( Refer to JP-A-8- 8470 1st, etc.). And anisotropic scattering polarizer. The anisotropic scattering polarizer has a 3 2 2 DRP (refer to US Pat. No. 5,825,543). There is also a polarizing element that can be used for polarization conversion. For example, a smectic type C* is used (refer to JP-A-2001-20 1 635, etc.). Anisotropic diffraction gratings can be used. The polarizing plate of the present invention can be used together with a brightness enhancement film. Use brightness boost -90- 200809279

In the case of the film, the adhesion between the polarizing plate and the brightness enhancement film is preferable because it can be waterproofed into the polarizing plate to suppress light leakage. The adhesive for bonding the polarizing plate and the brightness enhancement film is not particularly limited, and for example, an acrylonitrile-based polymer, a polysiloxane polymer, a polyester, a polyurethane, a polyamide, a polyvinyl ether, a vinyl acetate/ A rubber-based polymer such as a vinyl chloride copolymer, a modified polyolefin, an epoxy, a fluorine-based, a natural rubber, or a synthetic rubber is a base polymer. In particular, it is excellent in optical transparency, and it is excellent in adhesion properties such as wettability, cohesiveness, and adhesion, and is excellent in weather resistance and heat resistance. &lt;Touching Plate&gt; The film of the present invention can be applied to a touch panel or the like described in Japanese Laid-Open Patent Publication No. Hei. No. Hei. &lt;Organic EL device&gt; The film of the present invention can be used as a substrate (base material film) or a protective film of an organic EL device or the like. When the film of the present invention is used in an organic EL device or the like, it is possible to apply, for example, JP-A-H11-335661, JP-A No. 11-335368, JP-A-2001-192651, JP-A-2001-192652, JP-A-2001-192653. JP-A-2001-335776, JP-A-200-247 859, JP-A-200 1 - 1 8 1 6 1 6 , JP-A-2001-181617, JP-A-2002-181816, JP-A-2002-181617, The contents described in each of the publications such as JP-A-2002-056976. It is preferable to use the contents described in the respective publications of JP-A-2001-148291, JP-A-2001-221916, and JP-A-2001-231443. EXAMPLES Hereinafter, the present invention will be more specifically described by way of Examples, but the embodiment of the present invention is not limited thereto. &lt;&lt;Measurement Method&gt;&gt; -91- \ 200809279 The measurement method of various properties described in the present specification will be described below. [Transmotive Humidity]

The measurement method of the moisture permeability can be carried out by using "polymeric property II" (polymeric experiment lecture 4, co-published), pages 285 to 294: measurement of vapor permeation amount (mass method, thermometer method, vapor pressure method, adsorption amount method). The method according to the present invention relates to a membrane sample of 70 mm ¢), which is conditioned at 60 ° C and 95% RH for 24 hours, and is calculated per unit according to JIS Z-020 8 by moisture permeability = humidity-adjusted mass-pre-humidification mass. The amount of water in the area (g/m2). At this time, the cup placed in the constant temperature and humidity apparatus is repeatedly taken out at an appropriate time interval and weighed, and the mass increase per unit time is determined until it is fixed within 5%. In order to eliminate the influence of the moisture absorption of the sample, the blank contrast cup which is not placed in the moisture absorbent is measured, and the moisture permeability is corrected. The moisture permeability enthalpy used in the present invention can be used to measure the moisture permeability from the side of the substrate layer when the protective film having the layered inorganic compound dispersed in the polyvinyl alcohol, the vinyl alcohol copolymer, and the coating layer of the resin layer is measured. value. [Hardness] &lt;Pencil Hardness&gt; The strength of the film of the present invention was evaluated by a pencil hardness test according to IS-K5400. [Analysis of the resistance of steel wool] The rubbing test was tested according to the following conditions. Evaluation of environmental conditions: 25 ° C, 60 % RH rubbing material: the tester in contact with the sample rubbing the tip end (lcmxl cm) with steel wool (made by Nippon Steel Mian (stock), No. 0000), The strap is fixed to prevent movement. The reciprocating motion was performed on the following conditions. Moving distance (one-way): 13cm, rubbing speed: 13cm/sec' Load: 500g/cm2, tip contact area: Icmxlcm, -92- 200809279 Rubbing times: 1 〇 reciprocating. The oily black ink was applied to the side of the sample after rubbing, and the reflected light was visually observed. The damage of the rubbing portion was evaluated according to the following criteria. 〇: 乍 see no scars △: carefully visible scars X: obvious scars visible [haze]

The obtained film was measured for total haze, internal haze, and surface haze as follows. 1. The total haze of the film obtained by ns-K7 136. 2) Drop a few drops of polyoxylized oil on the front side and the reverse side of the low refractive index layer side of the obtained film, and use two sheets of 1 mm thick glass plate (microscopy thin film product number s 9111, manufactured by MAT SUN AMI) from both sides. The cover is used to make the two glass plates completely optically adhered to the obtained film, and the haze is measured in the state where the surface haze is removed, and the measurement between the two glass plates separately measured is measured by the polyoxygenated oil. Haze calculates the internal haze of the film. 3. Calculate the surface haze 膜 of the film by subtracting the internal haze calculated from the above 2 from the total haze measured in the above 1. [Integral reflectance] After the surface of the film was roughened by sandpaper, the black ink was used for the treatment, and the front side was measured at a wavelength of 380 to 78 nm by a spectrophotometer (manufactured by JASCO Corporation) without back reflection. Integral spectral reflectance of the 5° incident angle of the range. As a result, the arithmetic mean 値 of the integral reflectance of 450 to 6 5 〇 nm was used. [Specular reflectance] After the surface of the film was roughened by sandpaper, it was treated with black ink, and the front side was measured by a spectrophotometer (manufactured by JASCO Corporation) at -93-200809279 3 80 without back reflection. Specular spectral reflectance at 5° incident angle of ~7 80 nm wavelength range. As a result, the arithmetic mean 値 of the specular reflectance of 450 to 650 nm was used. [Dustproofness] The sample processed by the polarizing plate was attached to a glass plate, and after standing in a general room for 1 hour, the dust on the surface was visually confirmed to adhere. 〇: There are few 麈 附着 △: How much visible dust is attached X: Visible dust adhesion [Polarization degree] The polarizing plate obtained above was placed in an environment of 60 ° C and 95 % RH for 1000 hours, and the degree of polarization was measured. The degree of polarization is obtained by the following formula (3). (wavelength 5 50nm) parallel transmittance + orthogonal transmittance equation (3): degree of polarization (%) = l〇〇x , 3⁄43⁄43⁄4 ^ evaluation of polarization

〇: The degree of polarization is over 99%, no problem. △: The degree of polarization of 98% or more is less than 99%, and there is no problem in practical use. X: The degree of polarization is less than 9.8% and there is a problem. [Coloring] The protective film for a polarizing plate was visually observed to determine the degree of coloration (yellowing). 〇: There is no coloring. △: Very slight coloring, but practically no problem X: Coloring is problematic. [Preparation of Coating Liquid Using Commonly Used] The following is a common example for the use of a coating layer containing a polyvinyl alcohol, a polyvinyl polyvinyl alcohol copolymer, and an inorganic layered compound dispersed in -94-200809279 (Example 1), An example of the use of the vermiculite composition (Example 2) and another example of the use of the hydrophobic compound (Example 3).

<coating liquid for undercoat layer S1> styrene butadiene latex (solid content 43%) 300 g 2,4-dichloro-6-hydroxy-5-three tillage sodium salt (8%) 49 g distilled water 1 600 0 g <coating liquid for undercoat layer S2> (first layer coating liquid (for antistatic layer)) distilled water polypropylene resin 7 8 1.7 parts by weight (JULIMER ET-410 ·• Made in Japan, 30% solid content) Tin oxide particles 3 0.9 parts by weight (FS-10D: manufactured by Ishihara Sangyo Co., Ltd., solid content 20%) carbodiimide compound 1 3 1. 3 parts by weight (CARBODILITEV-02-L2: 曰清纺, solid content 40 %) Surfactant 6.4 parts by weight (SANDETBL: Sanyo Chemical Industry Co., Ltd. solid content 44.6%) Surfactant 1.4 parts by weight (NANOACTYHN-100: Sanyo Chemical Industry Solid Content 44.6%) Vermiculite particle dispersion 0.7 parts by weight (SEAH 〇STERJE-W30: 曰本触制制〇3//m solid content 20%) 5.0 parts by weight -95- 200809279

(Second layer coating liquid (for surface layer)) 941.0 parts by weight of distilled water polypropylene resin (JULIMER ET-410: manufactured by Nippon Pure Chemical Co., Ltd., solid content: 30%) Epoxy compound 5 7.3 parts by weight (DENACOLEX-521: NAGASE Industrial product, solid content: 100%) Surfactant: 1.2 parts by weight (SANDET BL: 44.6% solid content of Sanyo Chemical Industries, Ltd.) <coating liquid for undercoat layer S3> (first layer coating liquid) 0.5 parts by weight of distilled water 823.0 parts by weight Styrene-butadiene copolymer latex (NipolLatex LX407C5: Japan solid content 40%) 1 5 1. 5 parts by weight of 2,4-dichloro-6-hydroxy-s-tri-diso disodium salt (Η-232: Solid Co., Ltd. 8%) 25.0 parts by weight of polystyrene particles (average particle size 2 // ) (Nipol UPN1008: 10% solid content in Japan) 0.5 parts by weight (second layer coating liquid) Distilled water 9 8 2.4 Parts by weight gelatin (alkali treatment) 1 4.8 parts by weight of methylcellulose (TC-5: manufactured by Shin-Etsu Chemical Co., Ltd.) 0.46 parts by weight of compound (Cpd-21) 0.3 3 parts by weight of PROKYCEL (Cpd-22 solid content: 3.5%) 2.0 parts by weight •96- 200809279 7 ccpd-2i}

&lt;Preparation of coating liquid for hard coat layer&gt; (modulation of sol solution a)

With a thermometer, a nitrogen introduction tube, a dropping funnel i, a 〇〇〇ml reaction vessel was fed with propylene methoxypropyltrimethoxy hydride 187 g (0.80 mol) and methyltrimethoxy decane (27.2 g) (〇·2〇πι〇). 1), methanol 320 g (10 mol) and KF 0.06 g (0.001 mol) were slowly added dropwise at room temperature with water of 15.5 g (0.8 6 m ο 1 ). After the completion of the dropwise addition, the mixture was stirred at room temperature for 3 hours, and then stirred under heating with methanol for 2 hr. Thereafter, the low boiling component was distilled off under reduced pressure, and 120 g of the sol a was obtained by filtration. As a result of GPC measurement of the thus obtained substance, the mass average molecular weight was 1,500, and among the components having an oligomer component or more, the molecular weight of 1 0 0 0 to 2 0 0 〇 was 30%. From the results of 1H-NMR measurement, the structure of the obtained material was as follows. -97- 200809279

4 &lt;° )CH3 H3C〇^r°^ij-0j^cH3

〇CH3 OCHj 80 : 20 series molar ratio Further, the condensation ratio α as measured by 29Si-NMR was 0.56. From the analysis results, it is understood that the decane coupling agent sol is mostly composed of a linear structural portion. The retention of the raw material propylene oxypropyltrimethoxy decane was 5% or less by gas chromatography. (1) Composition of coating liquid 1 for hard coating coating solution ΡΕΤ-30 40.Og DPHA 10.0g IRGACURE 184 2.0g SX-350(30%) 2.0g Crosslinked acrylonitrile-styrene particles (30%) 13.0g FP-13 0 · 0 6 g Sol solution (a) 1 l.Og Toluene 38.5g -98- 200809279

Composition of coating liquid for hard coating 2 PET-30 2 8 · 0 g DPHA 12.0g agglomerated vermiculite (secondary agglutination diameter 1.5/zm) 5.0g IRGACURE 184 l.Og IRGACURE 907 〇.2g FP-13 0.08g A Isobutyl ketone 40. Og cyclohexanone 15. Og composition of coating liquid 3 for hard coating

PET-30 4 6.0 g IRGACURE 184 1.7g MX-600 (30%) 28.6g FP-13 0.06g Sol solution (a) 11.Og DPHA 7.0g MiBK (methyl isobutyl ketone) 13.Og MEK (ding Ketone) 6.0g -99- 200809279

Composition of coating liquid for hard coating 4 PET-30 4 6.0g DPHA 10.0g IRGACURE 184 2.0g FP-13 0.06g Sol solution (a) 7.0g MiBK 13.0g MEK 6 . Og Composition of coating liquid for hard coating 5

DESOLITE Z7404 100.Og DPHA 31.Og KBM-5103 10.Og KE-P150 8.9g MXS-300 3.4g MEK 29.Og MIBK 13.Og -100 - 200809279 Mixture [Nippon Chemical Co., Ltd.] • ΡΕΤ_30 : a mixture of pentaerythritol triacrylate and neopentyl alcohol tetraacrylate [manufactured by Nippon Kayaku Co., Ltd.] • IRGACURE 184: polymerization initiator [manufactured by Vapart Process] • IRGACURE 907: polymerization initiator [ Steam Bart (stock) system] • SX-3 50: crosslinked polystyrene particles with an average particle size of 3.5 / zm [refractive index 1.60 'manufactured by Synthetic Chemicals Co., Ltd., 30% toluene dispersion, with p〇LYTRON Dispersing % machine after dispersing at 100 rpm for 20 minutes] Cross-linked acrylonitrile-styrene particles: average particle size 3.5 /zm [refractive index 1.55, manufactured by Kawasaki Chemical Co., Ltd., 30% toluene dispersion, using POLYTRON disperser After dispersing at 1000 rpm for 20 minutes, use] • FP-13: Fluorine-based surface modification agent 9

• MX-600: PMMA particles with an average particle size of 6 /zm [refractive index 1.49, manufactured by Kokusai Chemical Co., Ltd., 30% MIBK dispersion, used after dispersion for 20 minutes at 100 rpm with a POLYTRON disperser] • Agglutination chopping : Secondary agglomerate diameter - ninth particle size / zm) [made by Japan Meteorite Co., Ltd.] • DESORITE Z7404: Photopolymerizable hard coating liquid containing zirconium oxide particles [JSR (share) system] -102- 200809279 Composition of coating liquid 6 for hard coating CAP482-20 2.4g CYCLOMER P · 13.4g DPHA 16.3g IRGACURE 184 1.2g MEK 51.Og Butanol 14.0g Propylene glycol monomethyl ether 3.5g

Composition of coating liquid 7 for hard coating CAP482-20 2.4g CYCLOMER P 13.4g DPHA 13.3g KBM-5 103 3.3g IRGACURE 184 1.2g MEK 51.Og Butanol 14.Og Propylene glycol monomethyl ether 3.5g The above coating solution The polypropylene filter material having a pore size of 30 μm is filtered to prepare a coating liquid for the hard coat layer 1 to 6. Each compound used was as follows. • DPHA: dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate - 101 - 200809279 • ΚΒΜ-5 103 : r - propylene oxypropyl trimethoxy decane [Shin-Etsu Chemical Industry Co., Ltd.] • KE-P150 : 1.5// m vermiculite particles [made by Nippon Shokubai Co., Ltd.] MXS-300 : 3 # m crosslinked PMMA particles [manufactured by Synthetic Chemicals Co., Ltd.] CAP482-20 : Cellulose acetate propionate Ester [made by EASTMAN Chemical Co., Ltd.] CYCLOMER P : Reactive oligomer [DAICEL UCB (share) system]

(Preparation of coating liquid for low refractive index layer) (Synthesis of perfluoroolefin copolymer (1)) 10 Perfluoroolefin copolymer (1) CF2-CF- 50 CF3

OCH2CH2OCCH=CH2 (50: 50 Mohr ratio)

The hot press with a stainless steel mixer containing 100 ml of content was fed with 40 ml of ethyl acetate, 4.7 g of hydroxyethyl vinyl ether and 0.55 g of dilauryl peroxide, and the inside of the system was exhausted and introduced into hexafluoride by nitrogen substitution. 25 g of propylene (HFP) was heated in an autoclave to 65 °C. The pressure in the autoclave at a temperature of 65 °C is 0.53 MPa (5.4 kg/cm2). The reaction was continued for 8 hours while maintaining the temperature, and the heating was stopped while the pressure was 0.31 MPa (3.2 kg/cm 2 ), and the mixture was allowed to cool. When the internal temperature is lowered to room temperature, the unreacted monomer is ejected, and the autoclave is opened to take out the reaction liquid. A large amount of excess hexane was injected into the obtained reaction solution, and the solvent was removed by decantation to remove the precipitated polymer. The polymer was dissolved in a small amount of ethyl acetate and reprecipitated twice with hexane to completely remove residual monomers. After drying, 28 g of a polymer was obtained. Next, 20 g of this polymer was dissolved in 100 ml of N,N-103-200809279 dimethylacetamide, and the mixture was added dropwise with 1 1.4 S of chlorinated acrylic acid under ice-cooling, and stirred at room temperature for 10 hours. Ethyl acetate was added to the reaction mixture, and the mixture was washed with water. The organic layer was taken and concentrated, and the obtained polymer was re-precipitated with hexane to obtain 19 g of a perfluoroolefin copolymer (1). The polymer obtained had a refractive index of 1.421. (sol liquid b modulation)

In a reactor equipped with a stirrer and a reflux condenser, 20 parts of butanone, propylene oxypropyltrimethoxy decane (KBM-5103, manufactured by Shin-Etsu Chemical Co., Ltd.), 100 parts of ethyl acetoacetate diisopropyloxide After 3 parts of aluminum and mixed, 30 parts of ion-exchanged water was added, and after reacting at 60 ° C for 4 hours, it was cooled to room temperature to obtain a sol liquid b. The average molecular weight is 1,600, and among the components of the oligomer component, the component having a molecular weight of 1,000 to 20,000 accounts for 100%. It is known from gas chromatography that there is no residual propylene methoxypropyltrimethoxy decane. (Preparation of Dispersion A) In hollow hollow vermiculite sol (isopropoxide vermiculite sol, average particle diameter 60 nm, shell thickness 10 nm, vermiculite concentration 20% by mass, vermiculite particle refractive index 1.31, Ytekai 2002-796 After preparing 6 g of the preparation example 4, the size was changed to 500 g, and 30 g of propylene/oxypropyltrimethoxy decane (KBM-5103, manufactured by Shin-Etsu Chemical Co., Ltd.) and 1.5 g of ethyl diisopropylaluminate were mixed. Add 9 g of ion exchange water. After reacting at 60 ° C for 8 hours, it was cooled to room temperature, and 1.8 g of acetonitrile was added. To the dispersion 500 g, cyclohexanone was added to make the vermiculite content almost constant, and the solvent was replaced by distillation under reduced pressure. No impurities were generated in the dispersion, and the solid content concentration was adjusted to 2 〇 mass% with cyclohexanone to have a viscosity at 25 ° C of 5 mPa · s. The residual amount of isopropanol of the obtained dispersion A was 1.5% by gas chromatography. (Preparation of coating liquid for low refractive index layer) Thermal crosslinkable fluorine-containing polymerization containing a polyoxyalkylene and a hydroxyl group having a refractive index of 1.44 was added. -104-200809279 UT A 1 1 3, solid content concentration 6%, JSR (3) g, colloidal vermiculite dispersion MEK-ST-L (trade name, average particle size 45 nm, manufactured by Nissan Chemical Co., Ltd.) 1.3 g, the above sol liquid b 0.65 g and butanone 4.4 g, After 1.2 g of cyclohexanone was stirred, the polyacrylic acid was sprinkled through a furnace having a pore size of 1 m to prepare a low refractive index layer coating liquid 1. The layer formed by this coating had a refractive index of 1.45. (Modulation of coating liquid 2 for low refractive index layer)

Dissolving a heat-crosslinkable fluoropolymer (the fluorine-containing polyfluorene heat-curing polymer described in Example 1 of JP-A No. 1 -1 8962 1), a hardener (CYMEL303; trade name, Japan CYTEC Industry ( Co., Ltd.) 9.40g, hardening catalyst (CATALYST4050; trade name, manufactured by CYTEC Industrial Co., Ltd.) 0.92g in methyl ketone 500g, adding more than 195 parts by weight of dispersion A (fine stone + surface treatment agent solid component 39.0 Mass parts), colloidal vermiculite dispersion (meteorite, MEK-ST particle size different product, average particle size 45nm, manufactured by Nissan Chemical Co., Ltd.) 30.0 parts by mass (solid content 9.0 parts by mass), sol liquid b 17.0 mass Parts (solid content: 5.0 parts by mass), PM9 80M (photopolymerization initiator, and Wako Pure Chemical Industries, Ltd.) 3. 3 parts by mass. The solid content concentration of the entire coating liquid was 6% by mass, and the coating liquid 2 for the low refractive index layer was prepared by diluting cyclohexane and methyl ethyl ketone to a ratio of cyclohexane to methyl ketone of 8 to 92. 5 8。 The coating layer having a refractive index of 1. 3 8 . (Preparation of coating liquid 3 for low refractive index layer) • Adding a perfluoroolefin copolymer (1) 15.4 g, hollow vermiculite sol (refractive index 1.31, average particle diameter 60 nm, solid content concentration 20%) 2.2 g, reactivity Polyxyloxy X-22-164C (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.3 g, sol liquid b 7.3 g, photopolymerization initiator (IRGACURE 907 (trade name), Vapart Chemical Co., Ltd.) 〇. 76 g, 29 g of butanone, and 12.0 g of cyclohexane were mixed, and the mixture was filtered with a pore size of 5 /zm polypropylene to prepare a coating liquid 3 for a low refractive index layer. The layer formed by this coating liquid has a refractive index of 1.40. (Modulation of coating liquid 4 for low refractive index layer)

The fluoropolymer containing the ethylenically unsaturated group (the fluoropolymer (A-1) described in Production Example 3 of JP-A-2005-89536) was dissolved in 500 g of methyl isobutyl ketone in a solid content of 45.0 g. 195 parts by mass of dispersion A (39.0 parts by mass of vermiculite + surface treatment agent), colloidal vermiculite dispersion (meteorite, MEK-ST particle size difference, average particle diameter 45 nm, solid content concentration 30%) 30.0 parts by mass (solid content: 9.0 parts by mass), 17.0 parts by mass of the sol liquid b (5.0 parts by mass of the solid content), and 2.0 parts by mass of PM980M (photopolymerization initiator, and Wako Pure Chemical Industries, Ltd.). The solid content concentration of the entire coating liquid was diluted with butyl ketone to 6 mass%, and the coating liquid 4 for a low refractive index layer was prepared. The layer formed by this coating liquid had a refractive index of 1.38. (Preparation of coating liquid 5 for low refractive index layer) A mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (DPHA, manufactured by Nippon Kayaku Co., Ltd.) 2.65 g, vermiculite dispersion A (hollow vermiculite dispersion, solid content concentration: 20%) 30.0 g, sol liquid b 2.93 g, reactive polyoxo X-22-164C (trade name; manufactured by Shin-Etsu Chemical Co., Ltd.) 15.15 g, fluorine-containing compound F3 035 (trade name; manufactured by Nippon Oil & Fats Co., Ltd., solid content concentration: 30%) 0,15 g, photopolymerization initiator (IRGACURE 9〇7 (trade name), manufactured by Steam Bart (stock)) 0.20 g and butanone 103 g 3.5 g of cyclohexanone was stirred and filtered with a filter material made of polypropylene having a pore size of l#m to prepare a coating liquid 5 for a low refractive index layer. (Preparation of coating liquid 6 for low refractive index layer) Fluorine compound OPS TER 具 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105份, 〇? 3丁丑11 JTA105A (JSR (stock), solid content: 0.5% by weight) 1 part by weight, butyl acetate-106-200809279 ester 151.5 parts by weight and decane oligomer COLCOTE N103X (COLCOTE The system has a number average molecular weight of 95 0 in terms of ethylene glycol, and a solid content: 2% by weight) of 164.0 parts by weight. A hollow vermiculite sol (isopropoxide solute sol, an average particle diameter of 60 nm, a shell thickness of 10 nm, a vermiculite concentration of 20% by mass, a refractive index of vermiculite particles of 1.31, and an opening of 2002-79616 Modification Example 4 are used to change the size. (manufacturing) 42.5 g, preparing coating liquid for low refractive index layer 6 &lt;&lt;Example 1 &gt;&gt;

[Preparation of coating liquid for coating layer] The inorganic layered compound used as follows is mixed with water to a desired concentration, and then subjected to a high-pressure disperser at 30 MPa for 3 <coating layer coating liquid 1 -1 &gt; In the water. HR-3010 5 parts by mass of water 95 parts by mass &lt;coating layer coating liquid 1-2&gt; HR-3010 5 parts by mass of water-dispersed ME-100 (solid content ratio: 5% by weight) water 40 parts by mass, 75 parts by mass -107- 200809279

&lt;Coating liquid for coating layer 1-3 &gt; GFZ200 5 parts by mass of water by high pressure dispersion of ME-100 (solid content ratio: 5% by weight) 40 parts by mass of crosslinking agent (glyoxal): &gt; 75 parts by mass of water &lt;coating liquid for coating layer 1-4&gt; DF-05 5 parts by mass of water, KUNIPIA-F (solid content ratio: 5% by weight) dispersed by high pressure 20 parts by mass of diammonium diacetate 2 parts by mass of water 7 5 parts by mass &lt;coating layer coating liquid 1-5 &gt; PVA103 4 parts by mass of MEB-3 (solid content ratio: 8% by weight) 3 3 parts by mass of water 126 parts by mass &lt;coating layer coating liquid 1-6&gt; PVA103 4 parts by mass of MEB-3 (solid content ratio: 8% by weight) 3 3 parts by mass of water 126 parts by mass of antifoaming agent (Compound A) 0.0 1 part by mass - 108 - 200809279

Compound A

OH ——eCH2-CH2-CH2-CH2-0^;-fCH2-CH2-0^——H π - 30 &lt; coating liquid for coating layer 1 - 7 &gt;

PVA 1 03 5 parts by mass of MEB-3 (solid content ratio: 8% by weight) 13 parts by mass of water-dispersed KUNIPIA-F (solid content ratio: 5% by weight) 2 1 part by mass of water 103 parts by mass &lt;coating layer coating Liquid 1-8&gt;_ PVA 1 03 5 parts by mass

High-pressure dispersion of BEN GEL (solid content ratio: 5% by weight) in water 67 parts by mass of water . 8 parts by mass of methanol 10 parts by mass Defoamer (the above compound A) 0.01 parts by mass -109· 200809279

&lt;Coating liquid for coating layer l-9&gt; PVA103 5 parts by mass of water BENGEL HV (solid content ratio: 5% by weight) 67 parts by mass of water 85 parts by mass of methanol 10 parts by mass of defoaming agent (the above compound A) 0.0 1 part by mass &lt;coating liquid for coating layer 1-10&gt; PVA103 5 parts by mass of water, BENGEL A (solid content ratio: 5% by weight) dispersed by high pressure 67 parts by mass of water, 95 parts by mass

&lt;Coating liquid for coating layer 1 -1 1 &gt; PVA103 5 parts by mass of water BENGEL (solid content ratio: 5% by weight) 67 parts by mass of water 85 parts by mass DENACOL EX212L 0.5 part by mass -110 - 200809279 &lt; Layer coating liquid 1-12&gt;_ PVA 1 03 5 parts by mass of water, high pressure dispersion of BEN GEL (solid content ratio: 5% by weight) 67 parts by mass of water 85 parts by mass of glutaraldehyde 0.5 parts by mass of p-toluenesulfonic acid 0.05 parts by mass

&lt;Coating liquid for coating layer 1-13&gt; S〇AN〇LD-2908 (30% solution) 4 parts by mass of water KUNIPIA-F (solid content ratio: 5% by weight) dispersed under high pressure 36 parts by mass of water 30 parts by mass Propyl alcohol 30 parts by mass _

60 parts of a mixed solvent containing 50% pure water and 50% isopropanol UPA, and EVOH (SOANOL D-2908, trade name, manufactured by Nippon Synthetic Chemical Co., Ltd.) 30 parts 'addition of 30% hydrogen peroxide 1 part' The mixture was heated to 80 ° C under stirring for about 2 hours. It was then cooled and catalase was added to 30 〇0 p pm ' to remove residual hydrogen peroxide. 5 parts of an inorganic layered compound montmorillonite (trade name: KUNIPIA F, manufactured by K U NIΜIN E Industrial Co., Ltd.) was added to 95 parts of pure water under stirring, and the mixture was sufficiently dispersed by a high-speed mixer. After that, it was kept at 40 °C for 1 day. Then, 60 parts of a mixed solvent of 50% pure water and 50% of IP A was added, and 4 parts of the previous acetamethylene glycol solution was added, and the mixture was thoroughly stirred and mixed -111-200809279. This solution was added under a high-speed stirring with 36 parts of a montmorillonite aqueous dispersion, and dispersed by a high pressure dispersion apparatus at a pressure of 50 MPa. The dispersion thus obtained is uniform and stable. A coating liquid containing 6 parts by mass of the inorganic layered compound in an amount of 4 parts by mass based on the ethylene-vinyl alcohol copolymer was produced. &lt;Coating liquid for coating layer 1 -1 4 &gt; In addition to the mixing ratio of the materials, the coating liquid 1 -1 4 for coating layer is prepared as the coating liquid for coating layer 1 -1 3 . SOANOL D-2908 (30% solution) 4 parts by mass of water-dispersed KUNIPIA-F (solid content ratio: 5% by weight) 6 parts by mass of water 30 parts by mass of isopropyl alcohol 30 parts by mass &lt;coating layer coating liquid 1 15&gt; The coating liquid for coating layer 1 -1 5 is prepared as the coating liquid 1 _ 1 3 for the coating layer, except for the mixing ratio of the raw materials and the raw materials. SOANOL D-2908 (30%^3⁄4) 4 parts by mass of ME-100 dispersed in high pressure (solid content: 5% by weight) 6 parts by mass of water 30 parts by mass of isopropanol 30 parts by mass &lt;coating layer coating Liquid 1-16&gt; Change the mixing ratio of raw materials and raw materials as follows, as for the coating layer -112- 200809279

Liquid 1-3 was used to prepare a coating liquid for coating layer 1-6. SOANOL D-2908 (30% solution) PVA103 (10% aqueous solution) ME-100 water-dispersed in water, 4 parts by mass of water isopropanol, 12 parts by mass (solid content ratio, 5 parts by mass) 36 parts by mass, 30 parts by mass 30 parts by mass &lt;coating layer coating liquid 1-17&gt; PVA403 (manufactured by KURARAY Co., Ltd.) 5 parts by mass of water-dispersed ME-100 (solid content ratio: 5% by weight) 5 parts by mass of water 75 parts by mass Coating liquid for coated layer 1 -1 8 &gt; HR-3010 (manufactured by KURARAY Co., Ltd.) 5 parts by mass of water, SWN (solid content ratio: 5% by weight) 20 parts by mass of water, 75 parts by mass of water, &lt;coating layer Coating liquid 1_19&gt; PVA203 (made by KURARAY Co., Ltd.) 10 parts by mass of water 90 parts by mass -113- 200809279

<coating liquid 1_20&gt; HR-3010 5 parts by mass glutaraldehyde 0.5 parts by mass water 75 parts by mass &lt;coating layer coating liquid 1-21 &gt; PVA105 (manufactured by KURARAY Co., Ltd.) 5 parts by mass of water by high pressure Dispersed ME-100 (solid content ratio 5% by weight) 9 parts by mass of water 75 parts by mass

<Coating liquid for coating layer 22> PVA103 (manufactured by KURARAY Co., Ltd.) 5 parts by mass of water-dispersed ME-100 (solid content ratio: 5% by weight) 60 parts by mass of water 75 parts by mass of acetone 10 parts by mass - 114- 200809279

Vinyl alcohol polymer alkalinity degree polymerization degree manufacturer HR-3010 99.0 ~99.6% KURARAY (share) GFZ200 99%~ 1200 曰本合成化学(股) PVA403 78,5 ～8L5% 300 KURARAY(share) PVA105 98.0- 99.0% 500 KURARAY (shares) PVA103 98.0 ~ 99.0% 300 KURARAY (shares) DF-05 (vinyl acetate-diacetone acrylamide copolymer) Japan SAKUBIPOVAL (shares) SOANOLD-2908 Japan Synthetic Chemical Industry Co., Ltd. PVA203 87.0 ~89.0 % 300 KURARAY(stock) Inorganic layered compound Species particle size manufacturer KUNIPIA F Montmorillonite 0.1 ~0.5//m KUNIMINE Industry (stock) ME-100 Synthetic mica 5-7 jum COPE chemical (share) SWN synthetic swelling Stone 0.05 β m COPE Chemical (Shares) MEB-3 (8% aqueous dispersion) Synthetic mica 5 ～7//m COPE Chemical (shares) BENGEL Benton HOlUN (shares) BENGELHV Bentonite 2//m HOJUN (shares) BENGEL A montmorillonite HOJUN (shares) cross-linking agent manufacturer glyoxal and pure pharmaceutical industry (shares) glutaraldehyde and pure pharmaceutical industry (shares) DENACOLEX212L water-soluble epoxy compound NAGASE CHEMTECS (shares) -115- 200809279 (Polarizing plate of Example 1-1) (made of protective film) (coating of coating) Triethylene phthalate cellulose (TAC-TD80U, manufactured by Fujifilm Co., Ltd.) is set on the coating side with a 1 m ο 1 / L alkali solution at 50 ° C Test processing. Thereafter, the coating liquid for coating layer was applied onto the alkalized surface of the triacetin cellulose film by a coating machine having a throttle mold to a film thickness of 20 μm after drying. Thereafter, the film was applied at a conveying speed of 30 m/min, dried at 130 ° C for 5 minutes, and wound up.

(Coating of the hard coat layer) The 80/zm thick triacetonitrile cellulose film (TAC-TD80U, manufactured by Fujifilm Co., Ltd.) coated with the coating layer 1-1 was rolled out in a roll shape, and throttling was used. In the die coater, the hard coat layer coating liquid 1-1 is directly extrusion-coated on the surface of the polarizing plate protective film on the support roll which is not provided with the coating layer. It was applied at a conveying speed of 30 m/min, and dried at 30 ° C for 15 seconds and 90 ° C for 20 seconds, and then a 1 60 W/cm air-cooled metal halide lamp (I GRAPHICS) was used under nitrogen blowing. The coating layer was cured by irradiating ultraviolet rays with T/cm2 to form an anti-glare layer having an anti-glare property of 6 / zm thick, and wound up to prepare a protective film for a polarizing plate of Example 1-1. (Preparation of protective films for polarizing plates of Examples 1-2 to 1-5 and Comparative Examples 1-1 to 1-4) The presence or absence of each layer, the type of coating liquid, and the film thickness were as shown in Table 2 as in Example 1-1. Protective films for polarizing plates of Examples 1-2 to 1-5 and Comparative Examples 1-1 to 1-4 were produced. (Preparation of a protective film for a polarizing plate of Example 1-6) The protective film for a polarizing plate of Example 1-2 was wound up in a roll shape, and the low refractive index layer was coated with a coating machine having a throttle die. The liquid 1 is directly extruded on the surface of the polarizing plate protective film coated with the hard coat on the support roller. After drying at 120 ° C for 15 seconds, and drying at 140 ° C for 8 minutes, a 240 W / cm air-cooled metal halide lamp (I GRAPHICS) was used under an atmosphere of nitrogen concentration of 0.1% nitrogen. The film was irradiated with ultraviolet rays at an irradiation dose of 300 mJ/cm 2 to form a low refractive index layer having a thickness of 10 nm, and was wound up to prepare a protective film for a polarizing plate of Example 1-6. (Preparation of a protective film for a polarizing plate of Example 1-7) (Coating of a coating layer)

Triethylene phthalate cellulose (TAC-TD80U, manufactured by Fujifilm Co., Ltd.) is provided on the coating layer side with a 1 mol/L alkali solution at 5 (TC for alkalization treatment. Thereafter, alkalization of the triethylene fluorene cellulose film) On the treated surface, the coating liquid for coating layer is applied by a coating machine having a throttle mold to a film thickness of 20/m after drying, and then applied at a conveying speed of 30 m/min. Drying at 〇 ° C for 5 minutes, coiling. (Coating of the undercoat layer) A 80 μm thick triethylene fluorene cellulose film coated with a coating layer (TAC-TD80U, manufactured by Fujifilm Co., Ltd.) The roll coating S1 is applied to the coating layer to a dry film thickness of up to 90 nm. (Coating of the hard coat layer) 80 layers of the coating layer 1-1 and the undercoat layer S1 are applied. The /zm thick triacetonitrile cellulose film (TAC-TD80U, manufactured by Fujifilm Co., Ltd.) is rolled up in a roll shape, and the hard coat layer is directly extruded by a coating liquid using a coating machine having a throttle mold. It is applied to the undercoat layer of the polarizing plate protective film on the support roller. It is applied at a conveying speed of 30 m/min. After drying at 30 ° C for 15 seconds and 90 ° C for 20 seconds, 160 W is used under nitrogen blowing. /cm air-cooled metal halide An object lamp (manufactured by I GRAPHICS Co., Ltd.) was irradiated with ultraviolet rays at an irradiation dose of 90 mJ/cm 2 to cure the coating layer to form an anti-glare layer having an anti-glare property of 6 // m thick, and wound up, and Example 1-7 was produced. Protective film for polarizing plate. (Preparation of protective films for polarizing plates of Examples 1-8 to 1-25 and Comparative Example 1-5) Table 2 shows the presence or absence of each layer, the type of coating liquid, and the film thickness. 1-7. The protective film for polarizing plates of Examples 1-8 to 1-25 and Comparative Example 1-5 was produced. -117- 200809279 In this case, when the thickness of the coating layer was 10 〇Vm or more, it was dried at 130 ° C for 20 minutes. (Preparation of a protective film for a polarizing plate of Example 1-26) The triethylene fluorene cellulose film used was not subjected to alkalization treatment, and was applied as a coating liquid 1-22, and an example was produced as in Example 1-7. A protective film for a polarizing plate of 1 to 26. The adhesiveness of the protective film for a polarizing plate produced is practically practical. (Preparation of a protective film for a polarizing plate of Example 1-27)

The triethylene fluorene cellulose film used was not subjected to alkalization treatment, and was subjected to corona discharge treatment on the surface of the support at a transport speed of 〇5 m/min at a transport speed of 〇5 m/min. 2 A protective film for a polarizing plate of Example 1-27 was produced as in Example 1-7 except for coating. There is no problem in the adhesion of the protective film for the polarizing plate produced. (Preparation of a protective film for a polarizing plate of Comparative Example 1-6) In Comparative Example 6, a WV film and a protective film for a polarizing plate without a coating layer were used as an adhesive with a coating liquid 1-1, by 3 μm. The thick adhesive layer is bonded to the polarizer and the protective film for the polarizing plate. Thereafter, the produced polarizing plate was dried at 50 ° C for 15 minutes. (Preparation of a protective film for a polarizing plate of Comparative Example 1-7) The drying of the resin layer was changed to 50 ° C for 10 minutes, and a protective film for a polarizing plate of Comparative Example 1-7 was produced as in Example 1-1. (Performance of Liquid Crystal Display Device) The polarizing plate provided in a liquid crystal display device (MRT-191S, Mitsubishi Electric Mechanism) using a TN type liquid crystal element is peeled off, and the polarizing plate of the present invention is attached to the adhesive by an adhesive. The surface of the polarizing plate protective film of the present invention is on the outer side (air interface side), and the transmission axis of the polarizing plate is made to coincide with the polarizing plate attached to the product. The liquid crystal display device was displayed in a dark room, and the following characteristics were visually evaluated. &lt;Light loss evaluation after high-humidity and low-humidity treatment (perimeter spot evaluation)&gt; -118- 200809279 The liquid crystal display device was treated at 90 ° C for 90 hours at 60 ° C for 50 hours, and then placed in a 60 ° environment at 25 ° C for 24 hours, or After 50 hours of treatment at 70 ° C for 10 hours, after standing for 2 hours at 25 ° C in a 60% environment, the liquid crystal display device was black-displayed, and the light leakage of the front side was visually evaluated by a plurality of observers. ◎No leakage observation 〇No leakage observation △Light leakage but not a problem

X Obvious observation of light leakage The evaluation results of the protective film for polarizing plate, polarizing plate, and liquid crystal display device are summarized in Table 2. The polarizing plate of the present invention has no problem of polarization and coloration, and the peripheral spot can be suppressed to exhibit practically superior performance. Further, it is excellent in scratch resistance and dustproofness, and can reduce glare due to low reflectance and surface scattering properties. Presenting the preferred performance for the surface of the image display device. Example 1 _8 The scratch resistance was poor, and the rest of the performance was good, and it was also insufficient for the inside of the image display device (the inside of the liquid crystal element seen from the viewer side).

-119- 200809279 Table 1

Polarizing plate protective film evaluation polarizing plate evaluation liquid crystal display device evaluation surface integral anti-mirror surface anti-peripheral spot transparent moisture steel inner fog haze degree of radiation rate 6〇 °c (g/m2.d) hardness wiping degree (%) radiation rate dustproof Sexual polarization coloring 90% 50 70〇C10%50 (%) (%) (%) Hour hours Example 1-1 275 3H 〇36 7 4.5 2.5 △ 〇〇△ 〇Example 1-2 210 3H 〇36 7 4.5 2.5 Δ 〇〇〇〇 Example 1-3 230 3H 〇 36 7 4.5 2.5 △ 〇〇〇〇 Example 200 3H 〇 36 7 4.5 2.5 Δ 〇〇〇〇 Example 1-5 256 3H 〇 36 7 4.5 2.5 Δ 〇〇〇〇 Example 1·6 210 3H 〇36 5 2.8 2 △ 〇〇〇〇 Example 1-7 275 3H 〇 36 7 4.5 2.5 △ 〇〇 △ 〇 Example 1-8 210 3H 〇 36 7 4.5 2.5 △ 〇〇〇〇 Example 1-9 .220 Below Η X 0.5 0 3.9 3.8 X 〇〇〇〇 Example 1-10 190 3Η 〇 36 7 4.5 2.5 △ 〇〇〇 ◎ Example 1-11 190 3Η 〇36 7 4.5 2.5 Δ 〇〇〇◎ Example 1·12 180 3Η 〇36 7 4.5 2.5 △ 〇〇 〇Example 1-13 195 3Η 〇36 7 4.5 2.5 Λ 〇〇〇〇 Example 1-14 195 3Η 〇36 7 4.5 2.5 Δ 〇〇〇〇Example 1_15 240 3Η 〇36 7 4.5 2.5 △ 〇〇〇〇 Example 1-16 190 3Η 〇36 7 4.5 2.5 Δ 〇〇 ◎ ◎ Example 1-17 190 3Η 〇 36 7 4.5 2.5 Δ 〇〇 ◎ ◎ Example 1-18 150 3Η 〇 36 7 4.5 2.5 △ 〇〇 ◎ 〇Example 1-19 240 3Η 〇36 7 4.5 2.5 Δ 〇〇〇〇Example 1-20 220 3Η 〇36 7 4.5 2.5 △ 〇〇〇〇Example 1-21 200 3Η 〇36 7 4.5 2.5 △ 〇〇 〇〇Example 1-22 275 Below 0.5 X 0.5 0 3.9 3.8 X Δ 〇 △ 〇 Example 1-23 280 Below Η X 0.5 0 3.9 3.8 X Δ 〇Δ 〇 Example 1-24 270 Below Η X 0.5 0 3.9 3.8 X Δ 〇Δ 〇Example 1-25 240 3Η 〇36 7 4.5 2.5 A 〇〇△ 〇Example 1-26 210 3Η 〇36 7 4.5 2.5 Δ 〇〇△ 〇Example 1-27 200 3Η 〇36 7 4.5 2.5 Δ 〇〇Δ 〇Comparative Example 1-1 1400 Below Η X 0.5 0 3.9 3.8 X Δ 〇XX Comparative Example 1-2 1100 3Η 〇36 7 4.5 2.5 Δ Δ 〇XX Comparative Example 1-3 500 3Η 〇36 7 4.5 2.5 Δ Δ 〇X Δ Comparative Example 1-4 650 3Η 〇36 7 4.5 2.5 Λ Δ 〇X Δ Comparative Example 1-5 650 3Η 〇36 7 4.5 2.5 Δ Δ 〇X Δ Comparative Example 1-6 1400 Below Η X 0.5 0 3.9 3.8 X Δ 〇X Δ Comparative Example 1-7 380 3Η 〇36 7 4.5 2.5 Δ 〇〇X Δ -120- 200809279 Table 2

Undercoat layer 1 coating layer coating film thickness undercoat layer 2 hard coating hard coat layer position hard coating film thickness low refractive index layer Example Μ coating solution without coating layer 1-1 χ 5βχη coating solution without hard coating layer 1 and the opposite side of the coating layer 6 &quot; m No Example 1-2 Coating liquid for coating without coating 1-2 4μιη Coating liquid 1 without hard coating layer and the opposite side of coating layer 6βτη No Example 1-3 No coating layer Coating liquid 1-3 4μιη Coating solution 1 without hard coating and opposite side ββγη of the coating layer. No Example 1-4 Coating liquid for coating without coating layer 1-3 12 βνη Coating liquid 1 without hard coating layer is opposite to coating layer Side 6/im No Example 1-5 Coating solution without coating layer 1-4 5 βνη. Coating solution 1 without hard coating layer and opposite side of coating layer 6//m No Example 1-6 Coating without coating layer Liquid 1-2 4 / / m coating solution 1 without hard coating layer and coating layer 6βχη coating layer for low refractive index layer 1 Example 1-7 Coating solution without coating layer 1-1 45 μτα for undercoat layer Coating liquid S1 Hard coating coating liquid 1 coating layer 6βτη No Example 1-8 Coating liquid without coating layer 1-2 Αβπι Coating liquid for undercoating S1 Coating liquid for hard coating layer 1 Coating ββτη. Example 1 ·9 Coating solution without coating layer 1-2 Αβπι No • • None Example 1-10 Coating solution for coating without coating 1-5 Αμπι Coating solution for undercoating S1 Coating solution for hard coating 1 Coating ββΐΏ None Example 1-11 Coating solution for coating without coating layer 1-6 4βΐη Coating solution for undercoating layer S1 Coating solution for hard coating layer 1 Coating on 6/zm No greed Example 1-12 Coating solution without coating layer 1-7 Αβπι Coating solution for undercoating S1 Coating solution for hard coat layer 1 Coating on 6//m No Example 1-13 Coating solution without coating layer 1·8 ββϊΏ. Coating liquid for primer layer S1 Hard Coating solution 1 coating βμγη No coating Example 1-14 Coating solution without coating layer 1-9 ββΤΆ Coating liquid for undercoat layer S1 Coating solution for hard coating layer 1 Coating ββγη No Example 145 No coating Coating liquid for layer 1-10 10 βϊΏ. Coating liquid for undercoat layer S1 Coating solution for hard coat layer 1 Coating ββτη No Example 1-16 Coating solution without coating layer 1·11 6βΤΐί Coating solution for undercoat layer S1 Hardcoat Coating Solution 1 Coating 6βτα No Example 1-17 Coating Solution Without Coating Layer 1·12 6βΐα Coating Solution for Undercoating S1 Coating Solution for Hard Coating Layer 1 Coating on 6/zm No Implementation example 148 Coating solution for coating without coating 1-13 4βπι Coating solution for undercoating S1 Coating solution for hard coating 1 Coating on 6βπι No Example 1·19 Coating solution without coating layer 1-14 4μπι Undercoating Liquid S1 Coating solution for hard coat layer 1 Coating layer 6μτη No Example 1-20 Coating solution without coating layer 1·15 4βχη Coating liquid for undercoat layer S1 Coating solution for hard coat layer 1 Coating layer 6/zm No Example 1-21 Coating liquid for coating layer 1-16 4βπί Coating liquid for undercoat layer S1 Coating liquid for hard coat layer 1 Coating layer m No Example 1-22 Coating liquid without coating layer 1-1 45 μιη None - - None Example 1-23 Coating solution without coating 1-19 65 None • • None Example 1-24 Coating solution without coating 1-20 45 βΐη. None - - None Example 1 -25 Coating solution for coating without coating 1-21 15 βπι Coating solution 1 for hard coating and 6βπι for coating coating No. Example 1-26 Coating solution without coating layer 1-22 4βπί JKW Coating solution for hard coating 1 and the opposite side of the coating layer 6βπι No Example 1·27 Coating liquid without coating layer 1-2 4βτη Coating liquid 1 for hard coat layer and reverse side of coating layer 6 βτη No comparison example 1-1 No _ No - - None Comparative Example 1·2 Coating liquid without coating layer 1-1 0.5 Coating liquid 1 without hard coating layer and ββγη without coating layer No comparative example 1-3 Coating liquid without coating layer 1·4 0.5 β m No hard coating Layer coating solution 1 and coating layer reverse side 6βχη No imm μ Coating solution without coating layer 1-17 l^m Coating solution 1 without hard coating layer and coating layer opposite ββτη No comparative example 1-5 No coating layer Coating solution 1-18 17/m Coating solution for undercoat layer S1 Coating solution for hard coating layer 1 Coating ββτη No comparative example 1-6 No 5 μιη No absence of ββτη Comparative Example 1-7 Coating solution without coating 1-1 19 μ m coating solution 1 without hard coating layer and coating layer opposite side ββτη No-121-200809279 (Examples 1-28 to 35) As shown in Table 3, the hard coating layer and the low refractive index layer were changed as in the examples. Ι-2 The protective film for a polarizing plate, a polarizing plate, and a liquid crystal display device of Example 1-28 to 35 were produced. From the evaluation results, it was found that, without deterioration of other properties, such as 袠4, the reflection property was changed, and it was selected to be suitable for various types. Application of polarizing plate protective film. table 3

Hard coat hard coat film thickness hard coat hard coat film thickness low refractive index layer Example 1-28 Hard coat coating liquid 5 3.7 / / m - Low refractive index layer coating liquid 1 Example 1-29 Coating liquid for hard coat layer 4 9 / / m - coating liquid for oxygen low refractive index layer Example 1-30 Coating liquid for hard coat layer 3 5 / zm - • Coating liquid for low refractive index layer Example 1 31 Coating liquid for hard coat layer 1 6βτα - Coating liquid for low refractive index layer 5 Example 1-32 Coating liquid for hard coat layer 1 6βνα - Coating liquid for low refractive index layer Example 11-3 Coating for hard coat layer Liquid 1 6/zm coating liquid for hard coat layer 3 coating liquid for low refractive index layer Example 1-34 Coating liquid for hard coat layer 2 2.5/zm - Coating liquid for low refractive index layer Example 11-35 Coating solution for hard coat 6 6//m - - Coating liquid for low refractive index layer 4 Table 4 Internal haze (%) Surface haze (%) Integral reflectance (%) Specular reflectance (%) Example 1 -28 69 0.6 1.6 1.3 Examples 1-29 26 1 1.3 1.2 Examples 1-30 0.7 0.3 1.2 1.2 Examples 1-31 38 5 1.3 1.3 Examples 1-32 38 5 1.3 1,4 Examples 1-33 37 2 4.4 1.5 Examples 1-34 1 4 1.3 1.6 Examples 1-35 5 1 1.3 1.7 -122- 200809279 (Polarized plate τι) W In the V film, a polarizing plate T1 was produced in exactly the same manner as in Example 1-2 except that a normal TAC (manufactured by TD80 Fujifilm Co., Ltd.). (Polarizing Plate Z1) The polarizing plate Z1 was produced exactly as in Example 1-2 except for the low retardation TAC (manufactured by Z-TAC Fujifilm Co., Ltd., Re = 1 nm' Rth = 3 nm). [Performance of Liquid Crystal Display Device]

The polarizing plate provided in the VA type liquid crystal display device (LC-26GD3 SHARP system) was removed by the retardation film, and the polarizing plate T1 of the present invention was attached to make the transmission axis of the polarizing plate coincide with the polarizing plate attached to the product. The polarizing plate provided in the IPS type liquid crystal display device (Th-26LX300 Panasonic) was peeled off, and the polarizing plate Z1 of the present invention was attached to make the transmission axis of the polarizing plate coincide with the polarizing plate attached to the product. And retaining the front side retardation film of the polarizing plate of the IPS type liquid crystal display device (32LC 100 Toshiba), peeling off the back side retardation film, and attaching the polarizing plate Z1 of the present invention so that the transmission axis of the polarizing plate is attached to The polarizing plates of the products are identical. Any of the above is attached so that the side coated with the coating layer is the outer side. Any of the liquid crystal display devices used the polarizing plate of the present invention, and it was confirmed that the peripheral spot was significantly reduced. It is used for the surface of the image display device with sufficient scratch resistance and reflectivity. In the apparatus of the first embodiment, the polarizing plate T 1 is used to replace the polarizing plate on the backlight side, and a brightness enhancement film (made by DBEF 3M) is added to the backlight side to produce a liquid crystal display device, which has no peripheral spots and other performance deterioration. The brightness of the display is increased. Further, it was confirmed that in the device using the brightness enhancement film, the polarizing plate protective film which is in contact with the brightness enhancement film is a device having a very small delay Z-T A C, and the viewing angle color change is -123-200809279. It is also known that a liquid crystal display device incorporating a brightness enhancement film is used to form a film in which the brightness enhancement film and the polarizing plate are adhered by an adhesive, and no peripheral spots are generated under severe conditions. In place of the TD 80-UL used as the transparent substrate film in the above embodiment, a polarizing plate protective film, a polarizing plate, and an image display device were produced in the same manner as in the above Examples 1-1 to 29 except that the fluorenyl cellulose film produced as follows was used. The evaluation results have no effect on other properties, and the durability of the polarizing plate is further improved.

(Preparation of a mercapto cellulose solution) The following composition was placed in a mixing tank, and each component was stirred and dissolved to prepare a sulfhydryl cellulose solution A. Composition of mercapto cellulose solution A cellulose triacetate (acetamethylene substitution degree 2.86) 100.0 parts by mass of triphenyl phosphate (plasticizer 1) 6.0 parts by mass of diphenyl phosphate (plasticizer 2) 3.0 parts by mass of dichloro Methane (first solvent) 4 0 2.0 parts by mass of methanol (second solvent) 60.0 parts by mass of methanol (second solvent) 6 0.0 parts by mass (preparation of matting agent solution) The following composition was placed in a disperser and stirred to dissolve each Ingredients, modulating the 'matering agent solution A'. -124- 200809279 The matte particle of the matting agent solution A having an average particle diameter of 16 nm (AEROSIL R972, manufactured by AE AEROSIL Co., Ltd.) 2.2 parts by mass of cellulose triacetate (degree of substitution of acetylene 2.88) 2.0 parts by mass of triphenyl phosphate Ester (plasticizer 1) 0.2 parts by mass of diphenyl phosphate (plasticizer 2) 0.1 parts by mass of dichloromethane (first solvent) 83.5 parts by mass of methanol (second solvent) 1 2.0 parts by mass (UV absorber solution) Preparation) The following composition was placed in a mixing tank, and stirred under heating to dissolve each component, and the ultraviolet absorbent solution A was prepared. UV absorber composition A composition UV-1 (ultraviolet absorber 1) 3.0 parts by mass of UV-10 (ultraviolet absorber 2) 12.0 parts by mass of cellulose triacetate (acetamethylene substitution degree 2.86) 4.4 parts by mass of triphenyl phosphate ( Plasticizer 1) 0.4 parts by mass of diphenyl phosphate (plasticizer 2) 0.2 parts by mass of dichloromethane (first solvent) 70.0 parts by mass of methanol (second solvent) 1 0.0 part by mass - 125 - 200809279 (fluorenyl fiber) Preparation of the film 1) 97.4 parts by mass of the mercapto cellulose solution A, 1.3 parts by mass of the matting agent solution A, and 1.3 parts by mass of the ultraviolet absorber solution A were each mixed after filtration, and cast using a belt casting machine. The film was peeled off from the tape when the residual solvent was 60%, and the width was maintained at 5% using a clip-on spreader at 100 ° C, and held at 130 ° C for 30 seconds. Then, the clip was released and dried at 130 ° C for 40 minutes (drying (1)) to produce a thiol cellulose film. The residual solvent amount of the obtained fluorene-based cellulose film was 0.2%, and the film thickness was 8 0 /X m 〇

In place of the TD80-UL used as the transparent substrate film in the above embodiment, a polarizing plate protective film, a polarizing plate, and an image display device were produced in the same manner as in the above Examples 1-1 to 16 except that the ruthenium-based cellulose film produced as follows was used. The evaluation results are options that vary the thickness and have no effect on other properties, and can amplify the thickness of the protective film of the polarizing plate. [Preparation of stock solution] Each stock solution composition and matting agent solution B having the following composition were placed in a pressure-resistant sealed tank under stirring, and after 80 hours of heating, the stock solution was completely dissolved for 3 hours, and then filtered to prepare a stock solution. Stock solution A -1 cellulose acetate (acetamethylene substitution degree: L 88) 100 parts by weight of triphenylphosphine 9 parts by mass of ethyl hydrazine; S glycol ester 3 parts by mass of UV-1 0.4 parts by mass of UV-6 0.8 mass Parts UV-8 0.8 parts by mass of dichloromethane 475 parts by mass of ethanol 50 parts by mass -126- 200809279

Stock solution A - 2 cellulose acetate (acetamethylene substitution degree 2. 88) 100 parts by mass of triphenylphosphine 1 1 part by mass of UV-1 0.8 parts by mass of UV-1 1 0.8 parts by mass of dichloromethane 475 parts by mass of ethanol 50 mass And UV-11: 2-(2'-hydroxy-3',5, azole-di(tertiary)phenyl)-5-chlorobenzotriene A- 3 cellulose acetate (acetamidine substitution degree 2 .88) 100 parts by mass of the compound 1 6 6 parts by mass of ethyl decyl ethyl acrylate 12 parts by mass of UV-1 0 parts by mass of UV-6 4 parts by mass of UV-8 2 parts by mass of dichlorocarbyl 475 parts by mass 50 parts by mass of ethanol i -127- 200809279 stock solution Α-4 cellulose acetate propionate (acetamethylene substitution degree 1.9, propylene substitution degree 〇.8) 100 parts by mass of triphenylphosphine 9 parts by mass ethyl hydrazine ethyl 3 parts by mass of diol ester UV-1 0.4 parts by mass of UV-6 0.8 parts by mass of UV-8 0.8 parts by mass of dichloromethane 475 parts by mass of ethanol 50 parts by mass

The matte particle of the matting agent solution B having an average particle diameter of 16 nm (AEROSILR972, manufactured by AERQSIL Co., Ltd.) 2.2 parts by mass of 2.0 parts by mass of 0.2 parts by mass of 0.1 part by mass of 85.5 parts by mass of 10.0 parts by mass of cellulose triacetate (substituted by acetamidine) Degree 2.88) Triphenyl phosphate (plasticizer 1) Diphenyl phosphate (plasticizer 2) Dichloromethane (first solvent) Ethanol (second solvent) [Casting film formation] (Cellulose ester film B- Preparation of 1) Mixed stock solution A-1 (98.7 parts by weight) and matting agent solution 1 (1.3 parts by weight) were obtained - 128-200809279

The stock solution was passed through a g circumferential temperature of 3 5 C ' to the die' and was uniformly cast from the die gap on the metal support composed of the endless stainless steel strip. The back side of the casting portion of the endless stainless steel strip is heated by a metal roll which is internally circulated at 35 ° C in warm water. After casting, the raw liquid film on the support (casting on the stainless steel strip is called a coil) is dried at a temperature of 44 ° C, and after 90 seconds of casting, the remaining solvent is removed by 40% by mass. The roller is dried under transport. The temperature of the endless stainless steel strip of the peeling part is 1 (TC. The stripped material is conveyed through the first drying zone set at 50 ° C for 1 minute, and is held by the expander of 80 ° C at the entrance of the second drying zone. The end of the coil is extended by 1.1 times in the width direction at 90 ° C. After the extension, the width is maintained for several seconds, the width is maintained, and the conveyance is carried out in the third drying zone set at 125 ° C in 20 minutes. The cellulose ester film sample B-1 having a film thickness of 80/m was dried. The type of the stock solution used to replace the stock solution A-1, and the thickness of the film sample after casting were as follows, as in the case of the cellulose film. Sample A-1 was cast and formed into a film to prepare a cellulose film sample: film sample B-2 to B-5. Film sample film thickness B-1 A-1 80 /z B-2 A -1 40 from B-3 A-2 60 β B-4 A-3 SO β B-5 A-4 80// B-6 A-4 40 β &lt;Example 2 &gt;&gt; [Cladding Preparation of coating liquid for layer] &lt; Coating liquid for coating layer 2-1 &gt; -129- 200809279 (PVA (%)) Pure water 3 75 g Isopropyl alcohol 202 g PVA124C 24 g Heating water and isopropanol to 7 0 °C, a small amount of PVA124C was added successively with stirring, stirring continuously Dissolve in PVA124C. PVA124C is dissolved and returned to room temperature to make up the amount of solvent for weight reduction. (coating layer 2-.1) Isopropyl alcohol 19g pure water 47g tetraethoxy decane 27g 0.1N-HC1 1.3g PVA (4%) 1 06g N,N-dimethylbenzylamine 0.002g

&lt;Coating liquid for coating layer 2-2&gt; Pure water 47 g Ethanol 19 g Tetraethoxy decane 29 g 0.1 N-HC1 1.3 g τ · Acryloxypropyl trimethoxy decane 2.22 g Ν, Ν-dimethylbenzylamine 0.002 g -130- 200809279 &lt;coating liquid for coating layer 2-3&gt; pure water 47 g ethanol / 1 9 g tetraethoxy decane 29 g 0.1 N-HC1 1.3 gr -aminopropyltrimethoxy decane 2, 22 g

&lt;Coating liquid for coating layer 2-4 &gt; Pure water 47 g Ethanol 19 g Tetraethoxy decane 28 g 0.1 N-HC1 1.3 g 7 - Acryloxypropyl trimethoxy decane 1.52 gr - Aminopropyl trimethoxy decane 1.52 g &lt; Coating liquid for coating layer 2-5 &gt; Isopropanol 19 g Pure water 47 g Tetraethoxy decane 24.78 g 0.1 N-HC1 1.3 g PVA (4%) 1 06 g T-propylene methoxypropyl trimethoxy decane 2.22 g NLN -Dimethylbenzylamine 0.0022 -131 - 200809279 &lt;coating liquid for coating layer 2-6&gt;

Isopropyl alcohol 19g pure water 47g tetraethoxy decane 24.78g 0.1N-HC1 1.3g PVA (4%) 1 0 6 gr -aminopropyltrimethoxy decane 2.22g &lt;coating layer coating liquid 2-7&gt; Alcohol I9g pure water 47g tetraethoxy decane 24.78g 0.1N-HC1 1 · 3 g PVA (4%) 106g r - propylene oxypropyl trimethoxy decane 1.1 lg r - propyl trimethoxy decane l.llg

&lt;Coating liquid for coating layer 2-8&gt; (Synthesis of Compound A having trimethyloxane at both ends) 7-Aminopropyltrimethoxydecane 1 mol and Resorcinol Diglycidyl Ether 0.5 mol in a methanol solvent The reaction was carried out at 60 ° C for 5 hours to obtain a compound A having triethoxy decane at both ends. -132- 200809279

(coating layer coating liquid 2 - 8) methanol 23 g pure water 40 g tetramethoxy decane 5 g 0.1 N-HC1 0.3 g Compound A 2 g of triethoxy decane at both ends (coating layer coating liquid 2-9) methanol 23 g pure Water 40g Tetramethoxy decane 5g 0.1N-HC1 0.3 g Compound A having a terminal end of triethoxy decane 1. 5 g 7 - propylene oxypropyltrimethoxy decane 0 · 5 g &lt; Coating liquid for coating layer 2 10&gt; (Synthesis of Compound B with triethoxyoxane at both ends) 1 mol of rv-aminopropyltrimethoxydecane and 0.5 mol of bisphenol A diglycidyl ether were reacted in a methanol solvent at 60 ° C for 5 hours to obtain both ends Is compound B of triethoxyoxane. (coating layer coating liquid 2-10) methanol 23 g pure water 40 g tetramethoxy decane 5 g 0.1 N-HC1 0.3 g Compound B 2 g of triethoxy decane at both ends (protective film for polarizing plate of Example 2-1) (produced) -133- 200809279 (corona discharge treatment) A triacetonitrile cellulose film (TAC-TD8 0U, manufactured by Fujifilm Co., Ltd.) having a thickness of 80/zm is rolled up in a roll shape at a conveying speed of 10 5 m/min. In the transport state, the surface of the support is subjected to corona discharge treatment at a condition of 727]/m2. (Coating of coating layer) The triacetyl cellulose film having a thickness of 80/m which was treated by corona discharge was rolled up in a roll shape, and the coating liquid for coating layer 2-1 was applied by using a micro-cavity coater. Corona discharge

On the surface, dry at 120 °C for 10 minutes and coil. The dried film thickness of the coating layer is 1 · 2 μ m 〇 (coating of hard coat layer). The 80 μ m thick triethylene fluorene cellulose film coated with a coating layer is wound into a roll shape / using a micro concave roll coater The coating liquid 1 for a hard coat layer is applied onto the undercoat layer 2 of the protective film for a polarizing plate. It was applied at a conveying speed of 30 m/min, and dried at 90 ° C for 20 seconds, and then a nitrogen-cooled metal halide lamp (manufactured by I GRAPHICS Co., Ltd.) of 160 k / cm was used under nitrogen blowing. The coating was hardened by irradiation with ultraviolet rays of 90 mJ/cm 2 to form a 6 // m thick hard coating having an anti-glare property. (Application of Low Refractive Index Layer) The 80//m thick triethylene fluorene cellulose film coated with the coating layer and the hard coat layer was wound up in a roll shape, and the low refractive index layer was coated with a micro concave roll coater. The coating liquid 1 is on the surface coated with the hard coating. After drying at 120 ° C for 150 seconds, and drying at 140 ° C for 8 minutes, a 240 W / cm air-cooled metal halide lamp (I GRAPHICS) was used in an atmosphere with a nitrogen concentration of 0. 1%. The system was irradiated with ultraviolet rays at an irradiation dose of 300 mJ/cm 2 to form a low refractive index layer having a thickness of 10 nm, and wound up to prepare a protective film for a polarizing plate of Example 2-1. (Preparation of Protective Films for Polarizing Plates of Examples 2-2 to 15 and Comparative Examples 2-1 to 4) -134- 200809279 Pre-treatment, undercoat layer, undercoat layer 2, and hard coat layer as shown in Table 5 The protective film for a polarizing plate of Examples 2-2 to 15 and Comparative Examples 2-1 to 4 was produced in the same manner as in Example 2-1 except that the layer, the low refractive index layer was pretreated, the presence or absence of each layer, the type of coating liquid, and the film thickness. The alkalizing treatment and the application of the undercoat layer are carried out as follows. (alkaline treatment)

The 80/zm thick triethylene fluorene cellulose film (TAC-TD8 0U, manufactured by Fujifilm Co., Ltd.) was rolled up in a roll, immersed in 1.5 mol/L, and neutralized in an aqueous solution of NaOH at 55 ° C for 2 minutes. After washing with water, an alkalized triethylene fluorene cellulose film was prepared. (Coating of the undercoat layer 1) A triacetonitrile cellulose film (TAC-TD8 0U, manufactured by Fujifilm Co., Ltd.) having a thickness of 80/zm is rolled up in a roll form, and the coating liquid for coating the undercoat layer is applied thereto. One side (the side that becomes the interface with the hard coat layer) to dry film thickness up to 90 nm, dry. (Coating of the undercoat layer 2) The 80 Å/m thick triethylene fluorene cellulose film coated with the coating layer is wound up in a roll shape, and the coating liquid S1 for applying the undercoat layer is applied onto the coating layer to a dry film thickness. Up to 90nm, dry. (When the undercoat layer 2 is applied, when the sol b is used), the 80/zm thick triethylene fluorene cellulose film coated with the coating layer is wound up in a roll shape, and the sol b is applied onto the coating layer to a dry film thickness. After drying at 100 ° C for 120 seconds, a 160 W/cm air-cooled metal halide lamp (manufactured by I GRAPHICS Co., Ltd.) was used under a nitrogen purge to irradiate ultraviolet rays with an irradiation amount of 90 m JT/cm 2 . Harden the coating. (Formation of Hard Coating Layer Using Coating Liquids 6 and 7 for Hard Coating Layer) Only the coating liquids 6 and 7 for hard coating layers were used to change the formation conditions of the hard coat layer as follows. The 80/xm thick triacetyl cellulose film coated with the coating layer was rolled up in a roll shape, and the coating liquid for hard coating layer was applied onto the coating layer at 70° using an inverted concave roll coater of -135-200809279. After drying for 180 seconds, a gas-cooled metal halide lamp (manufactured by I GRAPHICS Co., Ltd.) of l60 W/cm was used under nitrogen purge, and the coating was hardened by irradiation with ultraviolet rays of 90 m/cm2 to form a 6 /zm. Thick anti-glare hard coating. (Formation of a low refractive index layer using the coating liquid 4 for a low refractive index layer)

The formation conditions of the low refractive index layer of the coating liquid 4 for a low refractive index layer are changed as follows. The triacetonitrile cellulose film coated with a coating layer having a thickness of 80 / z m was rolled up in a roll shape, and the coating liquid 4 for a low refractive index layer was applied onto the surface coated with the hard coat layer using a micro-cavity coater. After drying at 90 ° C for 60 seconds, an air-cooled metal halide lamp (manufactured by I GRAPHICS Co., Ltd.) of 240 W/cm was used in an atmosphere of nitrogen blowing to an oxygen concentration of 0.1%, and irradiated with ultraviolet rays of 900 m/cm 2 . A 100 nm thick low refractive index layer was formed. In the case of using the coating liquids 3 and 5 for the low refractive index layer, the same formation method is employed, and the coating liquid 2 for the low refractive index layer is formed in the same manner as the coating liquid 1 for the low refractive index layer. [Production of the light-transmitting member] A 120/m thick polyvinyl alcohol film was immersed in an aqueous solution containing 1 part by mass of iodine, 2 parts by mass of potassium iodide, and 4 parts by mass of boric acid, and the polarizing member was stretched 4 times at 50 °C to prepare a polarizing member. (Other polarizing plate protective film) WV film coated with an optical anisotropic layer (manufactured by Fujifilm Co., Ltd.) was immersed in a 1.5 mol 1/L sodium hydroxide aqueous solution at 55 ° C for 2 minutes, neutralized, washed with water, and dried. . [Production of Polarizing Plate] The polarizing plate protective films 2-1 to 15 and the surfaces of the comparative examples 1-1 to 4 not coated with the coating layer and the alkalized WV film were not coated with the optical anisotropic layer. On the surface, the polarizer was bonded to a polarizing agent using a 5% aqueous solution of a fully alkalized polyvinyl alcohol as an adhesive to prepare a polarizing plate. [Performance of Liquid Crystal Display Device] -136- 200809279 Stripping a polarizing plate provided on a liquid crystal display device (MRT-191S, Mitsubishi Electric Mechanism) using a TN type liquid crystal element, and attaching the polarizing plate of the present invention to an adhesive The surface on which the polarizing plate protective film of the present invention is attached is on the outer side (air interface side), and the transmission axis of the polarizing plate coincides with the polarizing plate attached to the product. The liquid crystal display device was displayed in a dark room, and the following characteristics were visually evaluated. &lt;Light loss evaluation after high humidity and low humidity treatment (perimeter evaluation)&gt;

After the liquid crystal display device is treated at 60 ° C for 90% for 50 hours or 70 ° C for 10% for 50 hours, after being placed in an environment of 25 ° C and 60% for 2 hours, the liquid crystal display device is displayed in black, and the visual observer evaluates from the front by a plurality of observers. Light leaks. ◎No leakage observation △No light leakage but no problem X Obvious observation of light leakage The evaluation results of the protective film for polarizing plate, polarizing plate, and liquid crystal display device are summarized in Table 6. The polarizing plate of the present invention has no problem of polarization and coloration, and the peripheral spot can be suppressed to exhibit practically superior performance. Further, it is excellent in scratch resistance and dustproofness, and can reduce glare due to low reflectance and surface scattering properties. Presenting the preferred performance for the surface of the image display device. -137- 200809279

Ιο姒 Low refractive index layer Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 2 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer Coating liquid 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating for low refractive index layer Liquid 4 Coating liquid for low refractive index layer 4 Coating liquid for low refractive index layer 1 Coating liquid for low refractive index layer 1 Coating liquid for low refractive index layer 1 Coating liquid for low refractive index layer 1 Coating liquid for low refractive index layer 1 Coating solution for low refractive index layer 1 Hard coating film thickness ββίΧί 2.5 μ m 6μχη 6βιη 6/zm 6/zm 6/tzm 6βΐη 6/zm 6_ 6βηι 6βτη 6^m 6/m 6βτη B MD 6βγη B VO Hard coating Hard coating solution 1 Hard coating solution 2 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard Coating liquid for coating 1 Coating liquid for hard coating 1 Coating liquid for hard coating 1 Coating liquid for hard coating 1 Coating liquid for hard coating 6 Coating liquid for hard coating 7 Hard coating liquid 1 Coating solution for layer 1 coating solution for hard coating 1 for hard coating Liquid 1 Hard coating solution 1 Hard coating solution 1 Undercoat 2 m 壊壊m curtain * 璀 mm mm Soil coating solution S1 sol bm * * 被 被 被 被 被 被 被 被 被 被 被1,2 μια 1.2μγη 0.5 μ m 1.8^m 1,2βΐη 1.2//m 1,2/m 1.2/zm 1.2/zm 1.2 Aim 1- 1.2 L2 βπι 1.2/zm 1.2//m 1 12βνα 0.2//m B cn coating liquid for coating layer coating liquid 1 coating liquid coating layer 1 coating liquid coating liquid 1 coating liquid coating liquid 1 coating liquid coating liquid 1 coating liquid coating liquid 2 coating liquid coating liquid 3 coating layer coating Liquid 4 coating liquid for coating layer 5 coating liquid for coating layer coating liquid for coating layer 7 coating liquid for coating layer 8 coating liquid for coating layer 9 coating liquid for coating layer 1 coating liquid for coating layer 1 coating layer for coating layer Coating liquid 1 Coating liquid coating liquid 1 Coating liquid 1 Undercoat 1 m * Rest: mm * m 壊m 壊壊m Bullying: Coating liquid for undercoat layer S1 mm 壊* 壊Pretreatment corona Halo followed by alkalization alkalization alkalization alkalization alkalinization! i alkalization 1 corona corona soil followed by «corona corona embodiment 2-1 Example 2-2 Example 2-3 Example 2*4 Example 2-5 Example 2·6 Example 2-7 Example 2-8 Example 2-9 Example 2-10 Example 2-11 Example 2-12 Example 2-13 Example 2-14 Example 2-15 Comparative Example 1-1 Comparative Example 1-2 Comparative Example 1-3 Comparison Example 1-4 -οοα 丨200809279

9 螩 liquid crystal display device evaluation week spot 70 ° C 10% 50 hours &lt;&lt;&lt; 1 &lt; 3 〇 &lt; 1 &lt; 3 &lt; 1 〇〇〇 &lt; 0 &lt;] &lt; 3 X 1 X 1 6(TC90%50 hours 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇X 1 X Polarizer evaluation coloring 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇 1 X Polarization 〇〇 〇〇〇〇〇〇〇〇〇〇〇〇〇&lt;! 1 〇 Polarizer protective film evaluation dustproof 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇X t 〇 specular reflectance gsa\ ON ON ON so\ ss cs 04 S ON oo cn 1 s integral reflectivity g oo c4 cn oo OO OO OO o4 OO oo oa OO CA oo oo cn cn OO CS OO CS ON cn • OO οά Surface haze g VO wn v〇 Vo VO to one VO o 1 ΙΟ internal haze g tH VO cn oo CO P; CO cn v〇vo cn 〇a 1 oo cn steel sponge 1 〇 〇 〇 △ &lt;3 〇〇〇〇〇〇〇〇〇X &lt;1 |〇△ 〇〇〇1 〇△ I Hardness! X! cn CO CO K CO S cn K CO E CO CO CO 1 K cn Permeability (g/m2 · d) VQ gos 1-♦ § 8 s S oo VQ 1400 Splashing and cracking) Embodiment 2-1 Embodiment 2-2 Embodiment 2-3 Embodiment 2-4 Embodiment 2-5 Embodiment 2-6 Embodiment 2-7 Embodiment 2-8 Embodiment 2-9 Embodiment 2-10 Example 2-11 Example 2-12 Example 2-13 Example 2-14 Example 2-15 Comparative Example 1·1 Comparative Example 1-2 Comparative Example 1-3 Comparative Example 1-4 — 6α·

200809279 (Example 2-16) The protective film for a polarizing plate, a polarizing plate, and a liquid crystal display device of the Example 2-14 produced in the same manner as the undercoat layers 1 and 2 were changed as follows, and the dustproof property and the polarizing plate performance were evaluated. The light resistance is improved. The undercoat layers S2 and S3 are applied as follows. (Coating of the undercoat layer S2) The 80/zm thick triacetyl cellulose film (TAC-TD80U, manufactured by Fujifilm) was rolled up in a roll shape, and the surface coated with the hard coat layer was applied as follows. The first layer coating liquid of the coating liquid S2 for a layer was applied by a bar coating method in a conveyance state of a conveying speed of l〇5 m/min. The coating amount was 7.1 cc/m2, and the antistatic layer was obtained by drying at 180 ° C for 1 minute in a drying zone. Subsequently, the second layer of the coating liquid S2 was applied to the first layer of the undercoat layer S2 by a bar coating method while maintaining the conveying speed at 10 Torr/min. The undercoat layer S2 was obtained in an amount of 5.05 cc/m 2 and dried in an air-floating dry zone at 160 ° C for 1 minute. (Coating of the undercoat layer S3) The 80/zm thick triethylene glycol film with a coating layer was applied to the roll-form coating layer by the following method. The first layer of the coating liquid for the layer coating liquid S3 was applied by a bar coating method in a conveying state of a conveying speed of 10 Torr/min. The coating amount was 5.05 cc/m2, and the first layer of the undercoat layer was obtained by drying at 180 ° C for 1 minute in a drying zone. Subsequently, the second layer of the coating liquid S3 was applied to the first layer of the undercoat layer S3 by a bar coating method while maintaining the conveying speed at 10 Torr/min. The amount of 8.7 cc/m2 was dried in an air-floating drying zone at i6 ° C for 1 minute to obtain a second undercoat layer S3. 2-16 Jieguo (share) layer. The undercoating float-drying primer is applied with two layers, and the primer is coated with a floating-drying primer coating layer-140-200809279 (Examples 2-17 to 22), as shown in Table 7, the hard coating layer and the low refractive index layer are modified as implemented. Example 2_1 The protective film, polarizing plate, and liquid crystal display device for polarizing plates of Examples 2-17 to 22 were produced. From the evaluation results, no deterioration of other properties was observed, and the reflection performance was changed as shown in Table 8, and polarized light suitable for various applications was selected. Plate protective film.

Examples 2-17 and Examples 2-19 are superior to the sense of clarity, and are less likely to have interference spots than other embodiments. It is understood that the polarizing plate protective film of the present invention preferably imparts surface scattering from the viewpoint of interference spots. Further, in Comparative Examples 17 and 19, from the viewpoint of interference spots, Example 17 is preferable between the two. From the viewpoint of reducing interference spots, it is preferred that the polarizing plate protective film impart internal scattering. Table 7 Hard coat hard coat film thickness Hard coat hard coat film thickness Low refractive index layer Example 2-17 Coating liquid for hard coat layer 5 3.7 / / m - Coating liquid for low refractive index layer 1 Example 2 -18 coating liquid for hard coat 4 9 / / m • coating liquid for low refractive index layer 3 Example 2-19 coating liquid for hard coating 3 5βτα _ coating liquid for low refractive index layer 4 Example 2-20 Hard Coating liquid for coating 1 ββϊΐί - Coating liquid for low refractive index layer Example 2-21 Coating liquid for hard coat layer 1 6μνα • Coating liquid for low refractive index layer Example 2-22 Coating liquid for hard coat layer 1 6μτα Coating solution for hard coat 3 5/zm Coating solution for low refractive index layer 1 -141- 200809279 Table 8 Internal haze (%) Surface haze (%) Integral reflectance (%) Specular reflectance (%) Example 2-17 68 0.7 1.7 1.3 Example 2-18 25 1 1.3 1.2 Example 2-19 0.3 0.3 1.2 1.2 Example 2-20 38 5 1.3 1.1 Example 2-21 39 5 1.3 1.1 Example 2-22 38 2 1 4.4 3.7

(Example 2-23) Example 2-23 was carried out in the same manner as in Example 2-1 except that the hard coat layer and the low refractive index layer were not provided. In the case of Example 2-23, although the scratch resistance and the dustproof property were poor, and other properties were good, it was shown to be sufficient for the inside of the image display device (inside the liquid crystal element seen from the viewer side). (Example 2-24) A protective film for a polarizing plate, a polarizing plate, and a liquid crystal display device of Example 2-2 were produced in the same manner as in Example 2-1 except that the coating liquid for coating layer 2-10 was used. The performance is about the same as in Example 2-1 2. (Polarizing Plate T2) The polarizing plate T2 was produced in exactly the same manner as in Example 2-3 except for the usual TAC (manufactured by TD80 Fuji Film Co., Ltd.). (Polarizing Plate Z2) The polarizing plate Z2 was produced in a WV film using a low retardation TAC (manufactured by Z-TAC Fujifilm Co., Ltd., Re = 1 nm, Rth = 3 nm) as in Example 2-3. (Performance of the liquid crystal display device) The polarizing plate provided in the VA type liquid crystal display device (LC-26GD3-142-200809279 SHARP system) is removed by the retardation film, and is attached to the polarizing plate T2 of the present invention to make the polarizing plate The transmission axis is consistent with the polarizing plate attached to the product. The polarizing plate provided in the IPS type liquid crystal display device (manufactured by Th-26LX300 Panasonic) was peeled off and attached to the polarizing plate Z2 of the present invention so that the transmission axis of the polarizing plate coincided with the polarizing plate attached to the product. In addition, the front side retardation film of the polarizing plate of the IPS type liquid crystal display device (32LC100 Toshiba Corporation) is removed, and the retardation film on the back side is peeled off, and the polarizing plate Z2 of the present invention is attached to the transmission axis of the polarizing plate. With the polarizing plate attached to the product - Zhi. Either the side coated with the coating layer is attached to the outside. Any of the liquid crystal display devices can be confirmed to have a significant reduction in the peripheral spot by using the polarizing plate of the present invention. Moreover, it is sufficiently resistant to scratches and reflectance when used on the surface of an image display device. As for the devices of the embodiments 2-1 to 24, only the polarizing plate on the backlight side is changed to the polarizing plate T2, and a brightness enhancement film (manufactured by DBEF 3M) is added to the backlight side to produce a liquid crystal display device, which has no deterioration of peripheral spots and other properties. The brightness of the display has been increased. It can be seen that in the apparatus using the brightness enhancement film, the polarizing plate protective film which is in contact with the brightness enhancement film is a device having a very small delay Z-TAC, and the change in the apparent shape is small. ^ It is also known that, by the liquid crystal display device incorporating the brightness enhancement film, the brightness enhancement film is adhered to the polarizing plate by the adhesive, and no peripheral spots occur under severe conditions. In place of the above-described TD80-UL used in the examples, a bismuth-based cellulose film produced as follows was used as a transparent substrate film, and a polarizing plate protective film, a polarizing plate, and an image display device were produced as in the above Examples 2-1 to 24. The evaluation result is -143- 200809279. The other properties have no effect and the durability of the polarizing plate is further improved. (Preparation of a mercapto cellulose solution) The following composition was placed in a mixing tank, and each component was stirred and dissolved to prepare a cellulose solution A.

Composition of mercapto cellulose solution A cellulose triacetate (acetamethylene substitution degree 2.86) 100.0 parts by mass of triphenyl phosphate (plasticizer 1) 6 · 0 parts by mass of diphenyl phosphate (plasticizer 2) 3.0 parts by mass Methylene chloride (first solvent) 402.0 parts by mass of methanol (second solvent) 60.0 parts by mass (preparation of matting agent solution) The following composition was placed in a disperser, and each component was stirred and dissolved to prepare and disintegrate the solution A. Matte particles of the matting agent solution A having an average particle diameter of 16 nm (AEROSIL R972, manufactured by AE AEROSIL Co., Ltd.) 2 · 2 parts by mass of cellulose triacetate (degree of substitution of acetylene 2.88) 2 · 0 parts by mass of triphenyl phosphate Ester (plasticizer 1) 〇·2 parts by mass of diphenyl phosphate (plasticizer 2) 1.1 parts by mass of dichloromethane (first solvent) 83.5 parts by mass of methanol (second solvent) 12·0 parts by mass - 144-200809279 (Preparation of ultraviolet absorber solution) The following composition was placed in a mixing tank, and each component was stirred and dissolved by heating to prepare a UV absorber solution A. UV absorber solution A composition UV-1 (ultraviolet absorber 1) 3·〇 parts by mass UV-10 (ultraviolet absorber 2) 1 2 · 0 parts by mass of cellulose triacetate (acetamethylene substitution degree 2.86) 4 · 4 Parts by mass of triphenyl phosphate (plasticizer 1) 0.4 parts by mass of diphenyl phosphate (plasticizer 2) 〇 2 parts by mass of dichloromethane (first solvent) 70.0 parts by mass of methanol (second solvent) 10.0 parts by mass

(Preparation of mercapto cellulose 1) 99.4 parts by mass of the mercapto cellulose solution A, 1.3 parts by mass of the matting agent solution A, and 3 parts by mass of the ultraviolet absorber solution were mixed after filtration, using a belt casting machine Casting. The film was peeled off from the tape when the residual solvent was 60%, and the width was maintained at 5% using a clip-on spreader at 100 ° C, and held at 130 ° C for 30 seconds. Then, the clip was released and dried at 130 ° C for 40 minutes (drying (1)) to produce a thiol cellulose film. The obtained sulfhydryl cellulose film had a residual solvent amount of 0.2% and a film thickness of 80 / z m. In place of the TD80-UL used in the above embodiment, a bismuth-based cellulose film produced as follows was used as a transparent substrate film, and a polarizing plate protective film, a polarizing plate, and an image display device were produced as in the above Examples 1-1 to 16. The evaluation result is that it has no effect on other properties, and the thickness can be changed, and the thickness of the protective film of the polarizing plate can be increased -145-200809279. [Preparation of the stock solution] The raw material composition and the matting agent solution B of the following composition were placed in a pressure-resistant sealed tank under stirring, and the stock solution was completely dissolved at 80 T: heating for 3 hours, and then filtered to prepare a stock solution.

Stock solution A -1 cellulose acetate (acetylation degree 2.88) 100 parts by mass of triphenylphosphine 9 parts by mass ethyl decyl ethyl glycol ester 3 parts by mass of UV-1 0.4 parts by mass of UV-6 0.8 parts by mass of UV-8 0.8 parts by mass of dichloromethane 475 parts by mass of ethanol 50 parts by mass of stock solution A-2 --------- Cellulose acetate (degree of substitution of acetonitrile 2.88) 100 parts by mass of triphenylphosphine 1 part by mass of UV-1 0.8 Parts by mass UV-1 1 0.8 parts by mass of dichloromethane 475 parts by mass of ethanol 50 parts by mass -146- 200809279 and UV-ll: 2-(2'-hydroxy-3',5'-di(tertiary) phenyl group )-5-chlorobenzotriazine

Stock solution A - 3 cellulose acetate (acetonitrile substitution degree 2.88) 100 parts by mass of compound 16 6 parts by mass of ethyl decyl ethyl acrylate 1 2 parts by mass of UV-1 0 parts by mass of UV-6 4 parts by mass of UV-8 2 parts by mass of dichloromethane 475 parts by mass of ethanol 50 parts by mass of stock solution A-4 cellulose acetate propionate (degree of substitution of acetamidine 1 • 9, degree of substitution of propylene oxime 0.8) 1 part by mass of triphenylphosphine 9 parts by mass Ethyl glycol ester 3 parts by mass of UV-1 0.4 parts by mass of UV-6 0.8 parts by mass of UV-8 0.8 parts by mass of dichlorocarbyl 475 parts by mass of ethanol 50 parts by mass - 147 - 200809279 Composition of matting agent solution B Sand particles having an average particle diameter of 16 nm (AEROSIL R972, manufactured by Aberdeen AER0SIL Co., Ltd.) 2 _ 2 parts by mass 2.0 parts by mass 0.2 parts by mass 0.1 parts by mass 85.5 parts by mass 10.0 parts by mass of cellulose triacetate (degree of substitution of 2.88) Triphenyl phosphate (plasticizer 1) Diphenyl phosphate (plasticizer 2) Dichloromethane (1st solvent) Ethanol (2nd solvent)

[Casting film formation] (Production of cellulose ester film B-1) Mixed stock solution A-1 (98.7 parts by weight) and matting agent solution B (1.3 parts by weight) The temperature of the stock solution was adjusted to 35 ° C, and the solution was transferred to the mold. The head is uniformly cast from the die gap on the metal support formed by the endless stainless steel strip. Casting section of the endless stainless steel strip The back side is heated by a metal roller which is internally circulated by a warm water at 35 °C. After casting, the raw liquid film on the support (sponsored in a stainless steel strip called a coil) was blown dry at a temperature of 44 ° C, and after 90 seconds of casting, the remaining solvent amount was 40% by mass, and the majority of the rolls were peeled off. It is dried under transport. The temperature of the endless stainless steel strip of the peeling portion was 10 °C. After the stripped roll was conveyed for 1 minute through the first drying zone set at 50 ° C, the end of the coil was held at the inlet of the second drying zone by a 80 ° C expander, and extended at 90 ° C in the width direction. 1.1 times. After the extension, the width was maintained for a few seconds, the width was released, and the third drying zone set at 125 ° C was transported for 20 minutes to dry to obtain a cellulose ester film sample B -1 having a film thickness of 80 / zm. . The type of the stock solution to be used in place of the stock solution A-1, and the thickness of the film sample after casting are -148 - 200809279 degrees. The film is cast and formed in the same manner as the cellulose film sample A-1 except the following table. Membrane sample: I film sample film sample film thickness B-1 A-1 8 0 // m B-2 A-1 4 0 /zm B-3 A-2 60 /zm B-4 A- 3 SO β m B-5 A-4 80 # m B-6 A-4 40 μ m

&lt;&lt;Example 4&gt;&gt; [Preparation of coating liquid for coating layer] The following composition was placed in a mixing tank, and stirred at room temperature for 1 hour to prepare a coating liquid for coating layer 4-1 to 4-4, 4- 6 to 4-10. &lt;Coating liquid for coating layer 4 -1 &gt; Compound 4-1 90 parts by weight DPHA 10 parts by weight of glycidyl methacrylate 5 parts by weight Irg. 907 3 parts by weight of MEK 90 parts by weight MIBK 60 parts by weight - 149 - 200809279 &lt;coating layer coating liquid 4-2 &gt; Compound 4 -1 1 0 0 parts by weight Irg. 907 3 parts by weight MEK 9 0 parts by weight MIBK 60 parts by weight &lt;coating layer coating liquid 4·3&gt;

Compound 4 DPHA Irg. 907 MEK MIBK -1 90 parts by weight 10 parts by weight 3 parts by weight 90 parts by weight 60 parts by weight &lt;coating layer coating liquid 4-4 &gt; _

Compound 4-1 DPHA

Glycidyl methacrylate Irg. 907 MIBK 90 parts by weight 10 parts by weight 5 parts by weight 3 parts by weight 150 parts by weight &lt;coating layer coating liquid 4-6&gt; DPHA 100 parts by weight Irg. 907 3 parts by weight MEK 90 parts by weight MIBK 60 parts by weight - 150 - 200809279 &lt;coating layer coating liquid 4-7 &gt; Compound 4 - 2 90 parts by weight DPHA 10 parts by weight Irg. 907 3 parts by weight MEK 90 parts by weight - MIBK 60 weight &lt;coating layer coating liquid 4-8&gt;

Compound 4-2 90 parts by weight DPHA 10 parts by weight Glycidyl methacrylate 5 parts by weight Irg. 907 3 parts by weight MEK 90 parts by weight MIBK 60 parts by weight

&lt;Coating liquid for coating layer 4-9&gt; Compound 4 - 3 90 parts by weight DPHA 10 parts by weight Irg. 907 3 parts by weight MEK 90 parts by weight MIBK 60 parts by weight 151 - 200809279 &lt;coating layer coating liquid 4-10&gt; Compound 4-3 90 parts by weight DPHA 10 parts by weight of glycidyl methacrylate 5 parts by weight Irg. 907 3 parts by weight of MEK 90 parts by weight MIBK 60 parts by weight

&lt;Coating liquid for coating layer 4-5&gt; After feeding MIBK (60 parts by weight) and MEK (90 parts by weight) in a mixing tank, 10 parts by weight of SOMASIF MPE (manufactured by C〇PE Chemical Co., Ltd.) was added thereto with stirring. After the addition, the dispersion treatment was carried out for 10 minutes under cooling with cold water of 4 ° C in a US dispersing device, and further, Compound 4-1 (90 parts by weight), DPHA (10 parts by weight), and glycidyl methacrylate (3) were further added. After the weight was added, the mixture was stirred, and further subjected to a US dispersion treatment for 30 minutes under cooling at 4 ° C in cold water to prepare a coating liquid for coating layer 4-5. :One

SOMASIF MPE 10 parts by weight of compound 4-1 90 parts by weight of DPHA 10 parts by weight of glycidyl methacrylate 5 parts by weight Irg. 907 3 parts by weight of MEK 90 parts by weight of MIBK 60 parts by weight - 152 - 200809279 &lt;coating layer Coating liquid 4-11&gt; The coating liquid for coating layer 4-11 was produced by the method of coating liquid 4-5 for coating layers. SOMASIF MPE 1 0 parts by weight Compound 4-3 90 parts by weight DPHA 1 0 parts by weight Glycidyl methacrylate 5 parts by weight Irg. 907 3 parts by weight MEK 90 parts by weight MIBK 60 parts by weight

&lt;Coating liquid for coating layer 4-12&gt; H2〇 (8 10 parts by weight) was fed into the mixing tank, and P-10 (90 parts by weight) was added thereto with stirring, and the mixture was stirred for 1 hour to be completely dissolved. Further, dialdehyde starch (1 part by weight) and p-toluenesulfonic acid (0.2 part by weight) were added under stirring, and the mixture was further stirred for 30 minutes to prepare a coating liquid for coating layer 4 - 1 2 . P-10 90 parts by weight H2〇8 10 parts by weight of dialdehyde starch 1 8 parts by weight of p-toluenesulfonic acid 0.2 parts by weight - 153 - 200809279 &lt;coating layer coating liquid 4-13&gt; 4-12 Method for preparing coating liquid for coating layer 4-13 ° 90 parts by weight 81 parts by weight - 18 parts by weight of sourdough powder DENACOL EX-321 5 parts by weight of bismuth p-toluenesulfonate · 2 parts by weight

&lt;Coating liquid for coating layer 4-14&gt; H2〇 (810 parts by weight) was fed into the mixing tank, and P-10 (90 parts by weight) was added thereto with stirring, and the mixture was stirred for 1 hour to be completely dissolved. Further, 10 parts by weight of SOMASIF ME-100 (manufactured by COPE Chemical Co., Ltd.) was added under stirring. After the addition, dispersion treatment was carried out for 1 minute in a US dispersing device under cooling at 4 ° C in cold water. After the dispersion treatment, dialdehyde starch (18 parts by weight) and DENACOL EX-3 21 (3 parts by weight) were added and stirred, and further dispersed in the US for 30 minutes at 4 ° C under cold water cooling. Add p-toluenesulfonic acid (0·2 parts by weight) with stirring. More disturbed for 30 minutes to prepare coating liquid for coating layer 4-14 〇P-10 90 parts by weight H2〇8 10 parts by weight SOMASIF ME-100 1 0 weight Parts of dialdehyde starch 18 parts by weight DENACOL EX-321 5 parts by weight of p-toluenesulfonic acid 0.2 parts by weight - 154 - 200809279 &lt;coating layer coating liquid 4-15 &gt; After mixing the tank into a nitrogen atmosphere, feeding methanol (150 parts by weight) 泮 SP-003 (40 parts by weight) and 7-glycidoxypropyltrimethoxy sulane (60 parts by weight) were fed under a scramble, and further stirred at 65 T for 3 hours under a nitrogen atmosphere. Further, TMOS (400 parts by weight) and methanol (60 parts by weight) were added, and the mixture was stirred for 1 hour to prepare a coating liquid for coating layer 4-15.

ΕΡΌΜΙΝ SP-003 40 parts by weight of r-glycoyloxypropyltrimethoxy oxime 60 parts by weight of methanol 150 parts by weight of TMOS 400 parts by weight of methanol 60 parts by weight &lt;coating liquid for coating 4-15B&gt; in another mixing tank After feeding MEK (200 parts by weight), CORONATE L (30 parts by weight) and NIPP RAN (150 parts by weight) were added thereto with stirring, and the mixture was stirred for 1 hour to be completely dissolved to prepare a coating liquid for coating film 4-1 5B. CORONATE L 3 Q parts by weight NIPP0RAN 1 500 parts by weight MEK 200 parts by weight -155- 200809279 &lt;coating liquid for coating film 4-16&gt; 4-16 was prepared as coating liquid for coating 4-15. EPOMIN SP-003 40 parts by weight r-glycoyloxypropyltrimethoxy sand house 60 parts by weight methanol 150 parts by weight TMOS 400 parts by weight DENACOL EX-321 20 parts by weight methanol 60 parts by weight

&lt;coating liquid for coating film 4-17&gt; I), when stirring a base of trimethoprim. Further, r) and methanol (60 卩 SOMASIF I were mixed and coated with a US clock to make a nitrogen atmosphere in the mixing tank, and methanol was fed (150 y i was fed into EP 〇 MINSP-003 (40 parts by weight), R-glycoylpropane (60 parts by weight), further stirred under a nitrogen atmosphere at 65 ° C for 3 hours TM 〇 S (400 parts by weight), DENACOL EX-321 (5 weight parts by weight), and stirred for 1 hour to completely dissolve. Further, Φ MPE (manufactured by C〇PE Chemical Co., Ltd.) was added in an amount of 1 part by weight under stirring. After the addition, the S dispersion apparatus was subjected to dispersion treatment under cooling of 4 ° C cold water, and the coating liquid for layering 4-17 was used. - 200809279 EPOMIN SP-003 40 parts by weight of r-glycoyloxypropyltrimethoxy oxime 60 parts by weight methanol 150 parts by weight TMOS 400 parts by weight DENACOL EX-321 20 parts by weight methanol 60 parts by weight SOMASIF MPE 10 parts by weight

Compound 4-1: tricyclodecanediyldimethyldiacrylate compound 4-2: diacrylate-2,2,3,3,4,4,5,5,6,6,7,7,8 ,8,9,9,9·heptadecafluorodecyl glycol compound 4-3 : Perfluoroolefin copolymer (1) ΡΟ-1Ό : Starch low sugar, Donghe Chemical Industry Co., Ltd.

Dialdehyde starch: EPOMIN SP-00 3 manufactured by SIGMA Chemical Co., Ltd.: Polyethyleneimine, NIPPORAN1 100 made from Nippon Shokubai Co., Ltd. 100: Polyol-containing coating, CORONATE L., manufactured by Japan Polyurethane Industry Co., Ltd.: Isocyanate-containing coating , Japan Polyoxyl Industrial Co., Ltd. Irg. 907: IRGACURE9 07C, manufactured by Steam Bartification Co., Ltd.) DPHA: The coating liquid prepared by dipentaerythritol hexaacrylate is shown in Table 9. -157- 200809279

Chain Key Sword 6 撇 Coating Liquid Solid Concentration 43% 43% 43% 43% 43% 43% 43% 43% 43% 43% 43% 10% 10% 〇70% 70% 70% Coating solvent ΜΕΚ (60 )/ΜΙΒΚ(40) —&gt; MIBK MEK(60)/MIBK(40) —&gt;—&gt; H20 ——&gt;^&gt; 氍S- —&gt; Layered compound m 壊m Break: * m 壊壊壊壊 : : : : : : : : : : : : : : : : Glycidyl acrylate (3 parts by weight) Compound 4-1 (100 parts by weight) + Irg. 907 (3 parts by weight) Compound 4-1 (90 parts by weight) + DPHA (10 parts by weight) + Irg · 907 ( 3 parts by weight) Compound 4-1 (90 parts by weight) + DPHA (10 parts by weight) + Irg. 907 (3 parts by weight) + propylene glycol methacrylate (3 parts by weight) Compound 4-1 (90 parts by weight) + DPHA (10 parts by weight of HSOMASEF MPE (10 parts by weight) + Irg. 907 (3 parts by weight) + propylene glycol methacrylate (3 parts by weight) DPHA + Lfg. 907 (3 parts by weight) Compound 4-2 (90 parts by weight) + DPHA (10 parts by weight of HIrg. 907 (3 parts by weight) Compound 4-2 (90 parts by weight) + DPHA (10 parts by weight) + Irg. 907 (3 parts by weight) + propylene glycol methacrylate (3 parts by weight) | Compound 4-3 (90 parts by weight) + DPHA (10 parts by weight) + Irg. 907 (3 parts by weight) Compound 4-3 (90 parts by weight) + DPHA (10 parts by weight) + Irg. 907 (3 parts by weight) + propylene glycol methacrylate (3 parts by weight) Compound 4-3 (90 parts by weight) + DPHA (10 parts by weight of HSOMASIF MPE (10 parts by weight) + Irg. 907 (3 parts by weight) + propylene glycol methacrylate (3 parts by weight) I--------- PO-10 (50 parts by weight) + dialdehyde starch (10 parts by weight) + hydrochloric acid ( 3 parts by weight) PO10 (50 parts by weight) + diacid starch (100 parts by weight) + hydrochloric acid (3 parts by weight) + DENACOL EX-32K3 parts by weight) PO40 (50 parts by weight) + diacid starch (100 parts by weight) + Hydrochloric acid (3 parts by weight) + SOMASIF ME-KXX 15 parts by weight HDENACOL EX-32K3 parts by weight) Atmosphere)) -TMOS (400 parts by weight) + MeOH (60 parts by weight) (additional, stirring for 1 hour) ^ ΙΓ ^ &amp; CQ sound 1 | ά 1 % § φ ei Μ 2 Fine 1 SSX Γτΐ sg 3 to 8 m &lt; s- § Π! QW state _ β ψΐ Pfl 2 s § I *1 + • i Φ § a co ρΐη 1 8 2 O 1 _ &amp; atmosphere)) TMOS (400 parts by weight) + MeOH (60 parts by weight of HSOMASIF MPE (15 parts by weight of HDENACOL EX-32U3 parts by weight) After adding, simmering lhr) coating liquid 1 i 4 CO 3 5 〇〇 5 4-10 4-11 4-12 4-13 444 4-15 4-16 4-17 -8 VOI 丨 200809279 (Example 4-2 (made of protective film for polarizing plate) (coating of coating layer) on the surface of triacetin cellulose (TAC-TD80U, manufactured by Fujifilm Co., Ltd.), which is wound up in a roll form by a bar coater and coated with a coating layer. The coating liquid 4-1 was applied to a surface to a film thickness of 4 μm after drying. After drying at 80 for 2 minutes, a 160 W/cm air-cooled metal halide lamp (I GRAPHICS) was used under nitrogen blowing. The film was subjected to a hardening treatment with an irradiation amount of 60 m: T/cm 2 to prepare a film sample 4-2 with a coating layer. 0 (coating of hard coat layer) The film sample 4-2 with a coating layer was taken up in a roll shape, and the coating liquid 1 for hard coat layer was directly extruded and supported by a coater having a grooved die. The polarizing plate on the roll protects the undercoat 2 of the film. Coating at a conveying speed of 30 m/min, drying at 30 ° C for 15 seconds, 90 ° C for 20 seconds, and using a gas-cooled metal halide lamp of 1 60 W/cm under nitrogen blowing (I GRAPHICS) )), the coating was cured by irradiating ultraviolet rays with an irradiation amount of 90 ml/cm 2 to form a 6 # m thick hard coating layer having an anti-glare property. φ (application of the low refractive index layer) The film sample 4-2 with the hard coat layer and the coating layer is wound up in a roll shape, and the coating liquid 1 for coating the low refractive index layer is coated with a micro concave roll coater. On the surface of the hard coat. After drying at 120 ° C for 150 seconds, and drying at 140 ° C for 8 minutes, 240 W / cm air-cooled metal halide lamp (I GRAPHICS) was used under an atmosphere of nitrogen blowing to an oxygen concentration of 0.1%. The ultraviolet ray was irradiated with an irradiation amount of 300 mJ/cm 2 to form a low refractive index layer having a thickness of 100 nm, and wound up to prepare a protective film for a polarizing plate of the film sample 4-2 with an antireflection layer. (Preparation of protective film for polarizing plate of Examples 4-1 and 4-3 to 4-14) -159- 200809279 As shown in Table 9, the inspection process, the coating layer, the hard coat layer, the type of coating liquid, and the film thickness were changed. In Example 4-2, a protective film for a polarizing plate of ～4-14 was produced. (Baification treatment) 80/zm thick triethylene phthalate film (made by TAC-TD8 0U) was rolled up in a roll, neutralized and washed with water at 2.0 mol/L '60 ° C for 30 seconds. After alkalization of the alkalized triethylene, the water contact angle of the surface was 20°. #(Preparation of protective film for polarizing plate of Examples 4-15 to 17) (Coating of coating layer 4-12) On the surface of alkalized triacetyl cellulose, the coating layer is coated The coating liquid 4-1-2 was dried on a surface to dryness//m, and dried at 100 ° C for 2 minutes, and further at 50 ° C to prepare a film sample 4-15 with a coating layer. (Coating of Coating Layers 4-13 to 14) Instead of the coating liquid 4-12 for the coating layer, the coating layer is coated with the coated coating layer by using the cladding layer 4-1 2 instead of the coating layer. Membrane samples 4-16~17. (Preparation of protective film for polarizing plate) Using the film sample 4-15 to 4-17 with a coating layer, as shown in the table 'Low refractive index layer, coating liquid type, and film thickness, as in Example 4-1 5~4 A protective film for a polarizing plate of -17. (Preparation of a protective film for a polarizing plate of Examples 4-18 to 20) (Coating of the coating layer 4-15) on the surface of the alkalized triacetyl cellulose to the low refractive index layer of the rod, Example 4- 1, 4-3 Fuji film (stock) Soaked cellulose film in aqueous solution. ^ Machine from the roll of the film thickness up to 2 will be treated 20 small liquid 4-13 ~ 14 to layer 4-13, 4-14 &gt; change hard coating, Example 4-2 to make the real coater from the roll Roll-160- 200809279, coating the coating liquid for coating layer 4 -1 5 on one surface to / / m, drying at 80 ° C for 30 seconds, and further coating the coating liquid for coating film at 40 ° C After 4-15B was dried, it was dried at 100 ° C for 15 seconds, and then a coating film of coatings 4-18 was prepared at 40 ° C for 3 times. (Coating of Coating Layers 4-16 to 17) Instead of the coating liquid for coating layer 4-15, a film sample of the coating layer coated with coating No. 4-4-17 was produced by a method similar to that of the coating layer 4_15 except for coating. ~20. (Production of protective film for polarizing plate) Film sample 4-1 8 to 4-20 with coating layer, low refractive index layer, presence or absence of each layer, type of coating liquid, and Example 4-2 were produced in Example 4-18. The protective film for the polarizing plate made of the polarizing plate of 4-2Q is shown in Table 10. After drying, the film thickness can reach 1. 5 60% for aging treatment 100 The dry film thickness can reach 0.2 // mg treatment for 100 hours, and the layer coating liquid 4-16~4-17 is provided with coating layer 4 -1 6 , such as Table 9 shows the hard coating, • other than the film thickness as the protective film for implementation °

-161- 200809279

01 撇 比较 比较 比较 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Protective film for sheet sample Low refractive index layer Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Coating liquid for low refractive index layer coating liquid for low refractive index layer 11 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 low refractive Coating liquid for rate layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 coating liquid for low refractive index layer 1 low refractive index layer Coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 1 HC film thickness S VO 6jum 6//m 6/zm a 6//m 6//m 丨S 1 6βΐη ] 6//m 6//m 6/zm 6jum 6/zm 6/zm 6/zm S 5 6βτα 6/zm 6//m 6/im 6βπι Hard coat Hard layer Coating solution for layer 1 Coating solution for hard coating 1 Coating solution for hard coating 1 Coating solution for hard coating 1 Coating solution for hard coating 1 Coating solution for hard coating 1 Coating solution for hard coating 1 Hard coating Coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating solution 1 Hard coating Coating liquid 1 Hard coating liquid 1 Hard coating liquid 1 Hard coating liquid 1 Hard coating liquid 1 Hard coating liquid 1 Hard coating liquid 1 Hard coating Liquid 1 The coating film thickness of the present invention is 1 S inch 4 / / m 4 / / m 2jum 7 jum 4 / / m 4 / zm 4 / / m 4 / zm S inch 丨 4 / zm 4 ^ m S inch 2 / Um 2/zm 2βπι 2βπί 1.7/zm 1.7//m 1.7//m 1.7//m Coating solution No. 1 T—Η CS1 CO r—i 1—i 〇〇〇\ | 4-10 I 4-11 442 4-12 4-13 4-14 4-15 4-15 4-16 4-17 WU m η InW Substrate pretreatment 壊壊壊壊壊壊壊 壊壊壊壊 壊壊壊壊 壊 壊 alkali treatment treatment alkalization treatment test Alkalinization treatment alkalization treatment, substrate TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC 4 CSI CO 4 VO op On 4-10 4-11 4-12 4-13 4-14 Soil 15” 4-16 | 4-17 I 4-18 4-19 4-20 1 4-21 I 4-22

-ST 200809279 Evaluation of moisture permeability, adhesion, and adhesion after heat treatment at 50 ° C and 95 ° RH for 50 hours on the coated film samples 4-1 to 4-20 (durability adhesion) The film quality and optical characteristics of the protective film for polarizing plates of Examples 4-1 to 4-20 were evaluated. The results are as shown. [Production of polarizer] A 120/zm thick polyvinyl alcohol film was immersed in an aqueous solution containing 1 part by mass of iodine, 2 parts by mass of potassium iodide, and 4 parts by mass of boric acid, and the polarizing member was stretched 4 times at 50 °C to prepare a polarizing member.

(Other polarizing plate protective film) WV film coated with an optical anisotropic layer (manufactured by Fujifilm Co., Ltd.) was immersed in a 1.5 mol/L sodium hydroxide aqueous solution at 55 ° C for 2 minutes, neutralized, washed with water, and dried 0 [ Production of polarizing plate] Fully alkalized polyethylene on the surface of the polarizing plate protective film 4 -1 to 17 7 not coated with the coating layer and the surface of the alkalized WV film not coated with the optical anisotropic layer A polarizing agent was attached to the polarizing member as an adhesive to form a polarizing plate. [Performance of Liquid Crystal Display Device] The polarizing plate provided in a liquid crystal display device (MRT-191S 'Mitsubishi Electric Mechanism) using a TN type liquid crystal element is peeled off, and the polarizing plate of the present invention is attached to the adhesive via the adhesive in the present invention. The coating layer is disposed on the outer side (air interface side)' and the transmission axis of the polarizing plate coincides with the polarizing plate attached to the product. The liquid crystal display device was displayed in a dark room, and the following characteristics were visually evaluated. &lt;Light loss evaluation after high humidity and low humidity treatment (perimeter spot evaluation)&gt; Liquid crystal display device at 60 ° C 90% 50 hours, or 70 ° C 10% 50 hours -163- 200809279 After 25 ° After being placed in a 60% environment for 2 hours, the liquid crystal display device was black-displayed, and the front side light was visually evaluated by a plurality of observers. ◎ No light leakage observation △ There is light leakage but it is not a problem X Obvious observation of light leakage The evaluation results of the protective film for polarizing plate, polarizing plate, and liquid crystal display device are summarized in Table 11. The polarizing plate of the present invention has no problem of polarization and coloration, and the peripheral spot can be suppressed, showing practically better performance. Also, scratch resistance,

Less dimming and sexual shooting. The surface energy table of the disperse energy is good, and the ratio of the radiation is in the opposite direction. The low surface is placed on the surface and installed, showing good image and dust. Anti-use -164 - 200809279

Π漱Remark 1 Comparative Example 1 The present invention 丨 The present invention 1 1 The present invention 1 The present invention 1 [Comparative Example 1 1 The present invention 1 丨 Comparative Example The present invention The present invention The present invention - The comparative example of the present invention The present invention Comparative Example of the Invention The present invention provides a liquid crystal display device of the present invention for evaluating a weekly spot of 70 ° C for 10% 50 hours X &lt; 3 &lt; 3 &lt; 〇 X 〇 X 〇〇〇〇〇 X &lt; 〇〇 X &lt; 1 〇〇60°C 90%50 hours X 〇〇〇〇〇&lt; 〇X 〇〇〇〇〇&lt;〇〇〇&lt;3 〇〇〇 Polarizer evaluation〇〇〇〇〇〇〇〇〇〇〇〇 Sniper Mi Mi X 〇〇〇〇〇 &lt;] 〇X 〇〇〇〇〇&lt;〇〇〇&lt;1 评估 Evaluation of protective film samples for polarizers 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇 mirror reflectance (%) 〇 \ ON 3 s σ \ On ON a\ S crs a\ S ON S ON σ \ ON s integral reflectance (%) 〇〇c4 oo ON CS oo CS OO CN s oo OO r4 a\ oo CN OO R4 oo cs S α\ CSi CT\ Η OO CSi ON 撇陋鹣鲥g VO VO Ό vr&gt; v〇vo VO VO to yr^ vo v〇νη v〇e 镝麟« g VO CO CO oo CO oo cn P Pi oo CO cn 霾槃 尨〇〇〇〇〇〇 &lt; 〇〇〇〇〇〇〇 &lt; 〇〇〇 &lt;1 〇〇〇mmm 〇〇〇〇〇〇X 〇〇〇〇〇〇〇 X 〇〇〇X 〇〇〇 pencil hardness K cn K CO CO K CO SS CO SSK CO moisture permeability (g/m2 · d) 1400 og 04 〇Ο 04 o inch s CO oo S ▼-H riog CO s 04 i -Hi 8 f—Η ο § CSI g film sample with coating m ^ m μ m 1 〇&lt;1 &lt;1 〇〇X 〇&lt;&lt;&gt;〇&lt; 〇〇X &lt;1 〇〇 X &lt; 〇〇mmm 1 〇〇〇〇〇X 〇〇〇〇〇〇〇X 〇〇〇X 〇〇〇thickness βϊη • 4/zra 4//m 4/zm 2βτη ι 7/zm 4/zm 4 /zm 4//m Αβτη 4μτη 4/zm ι- 4/zm 4/zm 2^m 2fim 2μτη 2μχη 1.7 μ m 1.7 μ m 1.7 1.7 Sword: Wipe 1 5 CS CO 3 5 v〇v〇OO Os 4 -10 4-11 4-12 '12 4-13 '14 4-15 4- 15 4-16 4-17 Pretreatment of substrate * Destruction * m 壊m 壊« 壊* 壊壊** alkalization alkalization alkalization hydrazine alkalization alkalization alkalization substrate TAC TAC TAC TAC | TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC TAC Example No. 5 (N CO 5 v〇OO a\ 440 4-11 4-12 4-13 4-14 4 -15 4-16 4-17 4-18 4-19 4-20 4-21 4-22 -VO9I· 200809279 (Examples 4-21 to 36) Using the coated film samples 4-2, 4- 13, 4-16, a protective film for a polarizing plate, a polarizing plate, and a liquid crystal display device of Example 4-21 to 36 were prepared as in Example 4-2 except that the hard coat layer and the low refractive index layer were changed in Table 12, and the evaluation results were as follows. The polarizing plate protective film suitable for various applications can be selected by changing the reflection performance as shown in Table 13 without deterioration of its performance.

-166 - 200809279

Ϊ́αΐ 嗽 Low refractive index layer Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 3 Low refractive index layer coating liquid 4 Low refractive index layer coating liquid 5 Low refractive index layer coating liquid 6 Low refractive index layer Coating liquid 1 Low refractive index layer coating liquid 2 Low refractive index layer coating liquid 4 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 3 Low refractive index layer coating liquid 4 Low refractive index layer coating Liquid 5 Low refractive index layer coating liquid 6 Low refractive index layer coating liquid 1 Low refractive index layer coating liquid 2 Low refractive index layer coating liquid 4 Hard coating film thickness rattan 1 1 1 9 5 βία \ 1 1 1 1 1 Snow 5^m 1 1 Hard coating 1 1 I 1 1 Coating solution for hard coating 3 1 1 1 1 1 1 1 Coating solution for hard coating 3 t 1 Hard coating waste film thickness 3.7/zm 9_ 5 βπι 6 βτη 6βΐϊ\ 6 βηι 2.5//m 6 βηι 3.7//m 9//m 5/zm 6/zm 6/zm 6/zm 2.5 β m 6/zm Hard coat layer for hard coat layer 5 Coating solution for layer 4 Coating solution for hard coating: 3 Coating solution for hard coating 1 Coating solution for hard coating 1i Coating solution for hard coating 1 Coating solution for hard coating 2 Hard coating solution 6 1 Hard Coating liquid for coating 5 i coating liquid for hard coating 4 coating liquid for hard coating 3 coating liquid for hard coating 1 coating liquid for hard coating 1 hard coating Coating liquid 1 coating liquid for hard coating 2 coating liquid for hard coating 膜 coating film sample with coating C&lt;I CN 4 CN CN&quot;4- CSJ 4-17 447 4-17 447 4-21 4-21 4-21 4-21 Example No. Example 4-21 Example 4-22 Example 4-23 Example 4-24 Example 4-25 Example 4-26 Example 4-27 Example 4-28 Embodiment 4-29 Embodiment 4-30 Embodiment 4-31 Embodiment 4-32 Embodiment 4-33 Embodiment 4-34 Embodiment 4-35 Embodiment 4-36 - Bu 9Ι· 200809279

Table 13 Internal haze (%) Surface haze (%) Integral reflectance (%) Specular reflectance (%) Example 4·21 66 0.9 1.6 , 1.2 Example 4-22 24 1 1.3 1.2 Example 4-23 0.8 0.4 1.3 1.1 Examples 4-24 37 4 1.2 1.1 Examples 4-25 35 5 1.2 1.1 Examples 4-26 36 2 4.3 3.7 Examples 4-27 1 4 1.2 1.1 Examples 4-28 5 1 1.3 1.2 Implementation Example 4-29 68 0.6 1.5 1.3 Example 4-30 26 1 1.3 1.1 Example 4-31 0.7 0.3 1.3 1.1 Example 4-32 38 5 1.2 1.1 Example 4-33 36 5 1.2 1.1 Example 4-34 35 2 4.2 3.7 Example 4-35 1 5 L2 1.1 Example 4-36 5 1 1.2 1.1 -168 - 200809279 Examples 4-21, 4-23, 4-29, 4-3 1 are excellent because of their clarity. Compared with other embodiments, there are some interference spots. It is understood that the surface protective film of the present invention preferably imparts surface scattering from the viewpoint of interference spots. Further, in comparison of Examples 4-21 and 4-29 with 4-23 and 4-31, it is understood that Examples 4-21 and 4-29 are preferable from the viewpoint of interference spots. It is understood that the viewpoint of reducing interference spots is preferable for the internal polarizing of the polarizing plate protective film. (Polarizing Plate T4) The polarizing plate T4 was produced in the WV film using a normal TAC (manufactured by TD80 Fujifilm Co., Ltd.) as in φ Example 4-2. (Polarizing Plate Z4) The polarizing plate B4 was produced in the WV film as in Example 4-2 except for low retardation TAC (manufactured by Z-TAC Fujifilm Co., Ltd., R e = 1 n m, R t h = 3 n m). [Performance of Liquid Crystal Display Device] The retardation film is left, and the polarizing plate provided in the VA liquid crystal display device (LC-26GD3 SHARP system) is peeled off, and the polarizing plate T4 of the present invention is attached to the transmission axis of the polarizing plate and the sticker. The polarizing plates of the products are identical.

The polarizing plate provided in the IPS type liquid crystal display device (Th-26LX300 Panasonic) was peeled off, and the polarizing plate Z4 of the present invention was attached so that the transmission axis of the polarizing plate coincided with the polarizing plate attached to the product. Moreover, the front side retardation film of the IPS type liquid crystal display device (32LC100 Toshiba Corporation) was left, and the back side retardation film was peeled off, and the polarizing plate Z4 of the present invention was attached to the polarizing plate of the polarizing plate and the polarizing plate attached to the product. Consistent. Either the side coated with the coating layer is attached to the outside. It was confirmed by any of the liquid crystal display devices that the peripheral spot was remarkably reduced by using the polarizing plate of the present invention. Moreover, the surface of the image display device can be sufficiently scratch-resistant and reflectable from -169 to 200809279. Further, as for the devices of Embodiments 4-2 to 4-6, 4-8, 4-10 to 4-14, 4-16 to 4-18, and 4-20 to 4-22, only the polarizing plate on the backlight side is composed of By replacing the polarizing plate T4 and adding a brightness enhancement film (made by DBEF 3M) to the backlight side to produce a liquid crystal display device, it is possible to improve the display brightness without deteriorating other performance such as a peripheral spot. Further, in the device using the brightness enhancement film, the polarizing plate protective film which is in contact with the brightness enhancement film is a device having a very small delay Z-TAC, and the change in the color tone of the viewing angle is small.

Further, it is also known that a liquid crystal display device incorporating a brightness enhancement film has an adhesive to make the brightness enhancement film and the polarizing plate dense, and no peripheral spots occur under severe conditions. In place of the above-described TD80-UL used in the examples, the fluorenyl cellulose film 1 produced in Example 2 was used as the transparent substrate film as in the above Examples 4-2 to 4-6, 4-8, 4-10. ~4-14, 4·16~4-18, 4-20~4-22 A polarizing plate protective film, a polarizing plate, and an image display device were produced. The evaluation results were that other properties were not affected and the durability of the polarizing plate was further improved. Further, in place of the above-described TD 80-UL used in the examples, the ruthenium-based cellulose film samples Β-1 to Β-6 produced by φ in Example 2 were used as the transparent base film as in the above Example 4- 2~4-6, 4-8, 4-10~4-14, 4-16~4-18, 4-20~4-22 Making polarizer protective film, polarizing plate, image display device, evaluation results are other The performance is not affected and the thickness can be varied, and the thickness option of the polarizing plate protective film can be increased. In each of the examples in which the polarizing plate protective film of the present invention is used, the effect of improving the peripheral spot is remarkable, and it can be sufficiently improved to practically no problem. There is also no practical problem with coloring, showing better performance. In addition, the scratch resistance and the tamper resistance are good, and the glare can be reduced due to the low refractive index and the surface scattering property, and the image display device has a better performance when it is placed on the surface. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a preferred embodiment of a protective film for a polarizing plate of the present invention. Fig. 2 is a schematic cross-sectional view showing a preferred embodiment of a polarizing plate of the present invention. Fig. 3 is a schematic cross-sectional view showing a preferred embodiment of the image display device of the present invention.

[Description of main component symbols] 1 Protective film for polarizing plate 2 Transparent substrate film 3 Coating layer 4 Hard-coating layer 5 Polarizing plate 6 Polarizing member 7 Protective film for polarizing plate on the reverse side Liquid crystal display device 9 Liquid crystal element - 171-

Claims (1)

200809279 X. Patent application scope: 1. A protective film for a polarizing plate, characterized in that a coating layer having a low moisture permeability is formed on at least one side of a transparent base film composed of fluorene-based cellulose, 60 ° (:, The moisture permeability at 95% relative humidity is 3 () 〇 2/1112* days or less. 2. The protective film for a polarizing plate according to claim 1, wherein the film thickness of the transparent substrate film is 30 to 120 /zm. . 3. The protective film for a polarizing plate according to claim 1, wherein the fluorenyl cellulose is at least one selected from the group consisting of cellulose acetate, cellulose acetate propionate and cellulose acetate butyrate. 4. The protective film for a polarizing plate according to the item i of the patent application, wherein the coating layer is formed by using a vinyl alcohol polymer as a main component. 5. The protective film for a polarizing plate according to claim 4, wherein the degree of alkalinity of the above-mentioned ethylenic polymer is 95 mol% or more. 6. The protective film for a polarizing plate according to claim 4, wherein the degree of polymerization of the above-mentioned ethylenic polymer is 300 or more and 1700 or less. 7. The protective film for polarizing plates of claim 4, wherein the vinyl alcohol-based polymer is selected from the group consisting of dialdehydes, diisocyanates, polyacrylic acids, metal complexes, epoxy compounds, and the like. The crosslinkers of the group are crosslinked. 8. The protective film for a polarizing plate according to claim 2, wherein the coating layer contains a compound composed of an alkoxydecane, and a compound having a functional group reactive with a hydroxyl group or an alkoxy group and at least a decane coupling agent One of them. 9. The protective film for a polarizing plate according to the ninth aspect of the invention, wherein the coating layer is formed by a coating composition containing a polyazane-based coating composition as a main component 0-172- 200809279 ίο. The protection for polarizing plates according to item 1 of the patent application contains a hydrophobic compound. 11. The protection for a polarizing plate according to item 1 of the patent application is a layer made of a tree composed of a saccharide and a compound containing a fluorenyl group. 12. The protective layer for a polarizing plate according to the first aspect of the patent application is a layer of a resin group in which an amine group-containing polymer compound and an amine group-containing alkanol group-containing organodecane compound 1 are thinned. 1 3 . The inorganic layered compound having a particle diameter of 0.1 to 10 # m in the protection of the polarizing plate of the first application of the patent application range 14. The particle size of the inorganic layer-like compound for polarizing plate of claim 13 Line 1~5 β m. 15. The content of the inorganic layer-like compound for polarizing plate of claim 13 is 15 to 60% by weight. 16. The content of the inorganic layer-like compound for polarizing plate of claim 15 is 2 5~ 50% by weight 17·If you apply for the patent scope! For at least one of the layer on the protective layer and the opposite side of the coating layer, at least one of the layer provided with the layer of the anti-reflection layer, and the protection for the polarizing plate of the first item of the patent application. The thickness is 0.2/zm or more and 40/zm or less. 1 9 . The thickness of the protective layer for polarizing plates of claim 18 is less than or equal to lQ/zm. 20. The film for polarizing plate according to claim 17, wherein the coating film comprises a layered film of a lipid composition, wherein the layered functional group and the cerium-containing product are laminated to form a film. Among them, the layer is covered. The protective film, wherein the above protective film, wherein the above-mentioned enamel film, wherein the ruthenium film comprises less hard coating layer. A film in which a coating film is coated, wherein a film is coated, wherein at least one of the substrate between the substrate film and the coating layer and between the coating layer and the hard coating layer is provided. The protective film for a polarizing plate according to claim 1, wherein at least one of the surface of the transparent substrate film and the surface of the coating layer is subjected to at least one of a corona discharge treatment and a glow discharge treatment. The protective film for a polarizing plate according to the first aspect of the invention, wherein the coating layer is formed by coating a coating composition comprising at least a resin component and a coating solvent on a transparent substrate. The protective film for a polarizing plate according to claim 22, wherein the coating solvent contains at least one of a solvent which can swell or dissolve the transparent substrate film. A polarizing plate characterized by having a polarizing film and a protective film for a polarizing plate according to claim 1 of the patent application. 2 5 - An image display device characterized by using a polarizing plate as disclosed in claim 2nd. -174-