JP2009066884A - Manufacturing method of optical laminate, ooptical laminate, polarizing plate, and image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the manufacturing method of an optical laminate for suitably manufacturing the highly transparent optical laminate with no development of mutual sticking even being put into taken-up or piled-up conditions during a manufacturing process. <P>SOLUTION: The manufacturing method of the optical laminate including an optically transparent base material 2 and a hard coat layer 1 includes a process for forming the hard coat layer by coating a resin composition including 0.1-5 pts.mass of styrene particles having an average particle diameter of 10-300 nm based on 100 pts.mass of a resin solid content and a (meth)acrylate based compound having a weight average molecular weight of at least 1,000, and highly a permeable solvent on the optically transparent base material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to an optical laminate manufacturing method, an optical laminate, a polarizing plate, and an image display device.

Functions having various functions on the outermost surface of an image display device such as a cathode ray tube display (CRT), a liquid crystal display (LCD), a plasma display (PDP), an electroluminescence display (ELD), a field emission display (FED) An optical laminate composed of layers is provided.

Such an optical laminated body is a thin sheet having a thickness of about 40 to 100 μm, and there is a problem that the sheets are stuck to each other when the sheets are wound or stacked in the manufacturing process. For example, in the production of an optical laminate, after forming a hard coat layer on a substrate, the sheet is wound up once, and when the sheet is peeled off again in the next step, the sheet adheres and an in-process defect occurs. There was a problem. In order to prevent sticking of such a thin sheet, it is generally known to form a fine uneven shape on the surface of the sheet (Patent Document 1).

On the other hand, in the above optical laminate, a method is known in which particles are added to form an uneven shape on the surface in order to impart low reflectivity and antiglare properties (Patent Document 2).
However, if the above particles are added simply for the purpose of forming a concavo-convex shape on the surface, haze is also imparted, so it is difficult to form a highly transparent layer without affecting the optical properties. there were. In particular, it has been difficult to prevent such sticking to a clear type optical laminate.
JP 2004-284999 A JP 2004-69867 A

In view of the above situation, the present invention provides an optical laminate for producing a highly transparent optical laminate that can be easily peeled without sticking to each other even when wound or stacked in the production process. An object is to provide a manufacturing method.

The present invention is a method for producing an optical laminate having a light-transmitting substrate and a hard coat layer, and 0.1 to 5 mass of styrene particles having an average particle diameter of 10 to 300 nm with respect to 100 mass parts of resin solid content. And a step of forming a hard coat layer by applying a resin composition containing a (meth) acrylate compound having a weight average molecular weight of 1000 or less and a highly permeable solvent on the light-transmitting substrate. It is a manufacturing method of the optical laminated body characterized by the above-mentioned.
The (meth) acrylate compound having a weight average molecular weight of 1000 or less preferably has a refractive index of 1.45 to 1.65.
The solvent having high permeability is preferably at least one selected from the group consisting of methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone, acetone, cyclohexanone, methyl isobutyl ketone, and methylene chloride.

The resin composition preferably further contains an oxide of at least one element selected from the group consisting of silicon, aluminum, titanium, zinc, germanium, indium, tin and antimony.
The resin composition preferably further contains an antistatic agent.
The resin composition preferably further contains a silicon compound and / or a fluorine compound.
The light transmissive substrate is preferably triacetyl cellulose.
The light-transmitting substrate preferably has an antistatic layer on the surface on which the hard coat layer is formed.
The method for producing an optical layered body of the present invention preferably further includes a step of forming a low refractive index layer.

The present invention is also an optical laminate obtained by the above-described method for producing an optical laminate.
The optical layered body preferably has a total light transmittance of 91% or more.
The optical layered body preferably has a haze value of 0.7% or less.
The present invention is also an optical laminate having a light transmissive substrate and a hard coat layer, wherein the light transmissive substrate is triacetyl cellulose, and the hard coat layer has an average particle diameter of 10 to 300 nm. It is also an optical laminated body characterized by being a resin layer containing 0.1 to 5 parts by mass of styrene particles with respect to 100 parts by mass of the resin.

The present invention also provides a self-luminous image display device comprising the above-described optical laminate on the outermost surface.
This invention is also a polarizing plate provided with a polarizing element, Comprising: The said polarizing plate is a polarizing plate characterized by providing the above-mentioned optical laminated body on the polarizing element surface.
The present invention is also a non-self-luminous image display device comprising the above-described optical layered body or the above-described polarizing plate on the outermost surface.
Hereinafter, the present invention will be described in detail.

The present invention is a method for producing an optical laminate having a light-transmitting substrate and a hard coat layer, and 0.1 to 5 mass of styrene particles having an average particle diameter of 10 to 300 nm with respect to 100 mass parts of resin solid content. And a step of forming a hard coat layer by applying a resin composition containing a (meth) acrylate compound having a weight average molecular weight of 1000 or less and a highly permeable solvent on the light-transmitting substrate. It is a manufacturing method of the optical laminated body characterized by the above-mentioned. For this reason, in the manufacturing process of the optical laminate, when the hard coat layer is formed on the light-transmitting substrate and wound, the sheets do not stick to each other, and an optical laminate having excellent transparency is suitable. Can be manufactured.

The method for producing an optical layered body of the present invention comprises a hard coat layer using a resin composition containing a specific amount of styrene particles having the above specific particle diameter and containing a hydrophilic binder resin and a highly permeable solvent. To form. When the resin composition used in the present invention is applied to a substrate to form a film, the (meth) acrylate compound having a high hydrophilicity and a weight average molecular weight of 1000 or less is combined with a solvent having a high permeability. Penetrates the material. Therefore, in the coating film, the (meth) acrylate compound is unevenly distributed on the substrate side. Conversely, hydrophobic styrene particles tend to be unevenly distributed on the surface. As a result, it is considered that an uneven shape can be formed on the surface. Thus, the method for producing an optical layered body of the present invention can form a desired concavo-convex shape on the surface by adding a small amount of styrene particles, thereby imparting haze or reducing the surface hardness. The optical laminated body which can prevent sticking of a sheet | seat can be obtained suitably.

In addition, as described above, since unevenness is already formed on the surface before the resin is cured, an uneven shape capable of obtaining a desired effect is formed on the surface even by irradiation with weak active energy rays. Can do.
Furthermore, since the hard coat layer to be formed has a concavo-convex shape on its surface, for example, when a low refractive index layer is formed thereon, the adhesion between these layers can also be improved.

As described above, the present invention includes styrene particles having a specific particle diameter, a specific binder resin, and a highly permeable solvent, so that the sheet can be easily peeled off without being attached when the sheet is wound in the manufacturing process. It has been found that an optical laminate having excellent transparency can be suitably produced.

The method for producing an optical layered body of the present invention comprises 0.1 to 5 parts by mass of styrene particles having an average particle size of 10 to 300 nm with respect to 100 parts by mass of resin solids, ) A step of forming a hard coat layer by applying a resin composition containing an acrylate compound and a highly permeable solvent on the light-transmitting substrate. Since a hard coat layer is formed using a resin composition containing such a specific component, when the sheets are wound in the manufacturing process of the optical laminate, the sheets are not attached to each other, and the optical laminate is It can manufacture suitably. Moreover, the optical layered body thus obtained does not generate interference fringes, has a good appearance, and is excellent in optical characteristics such as light transmittance.

The resin composition includes styrene particles having an average particle diameter of 10 to 300 nm. By including styrene particles having a specific particle size, a layer having a desired concavo-convex shape can be formed without adding haze with a small amount of addition. When the thickness is less than 10 nm, the unevenness formed on the surface is reduced and the transparency is excellent. However, when the hard coat layer is formed on the light transmissive substrate and wound, the sheets may stick to each other. When it exceeds 300 nm, the unevenness | corrugation which can be made on the surface will become large, transparency may deteriorate and haze may also deteriorate.
In addition, the said average particle diameter is the value obtained by measuring using a laser diffraction scattering type particle size distribution measuring apparatus as a 5 mass% methyl ethyl ketone dispersion liquid.

The resin composition contains 0.1 to 5 parts by mass of styrene particles having an average particle diameter of 10 to 300 nm with respect to 100 parts by mass of the resin solid content. When the content of the styrene particles is less than 0.1 parts by mass, the surface is difficult to be uneven, and the sheets adhere to each other when the hard coat layer is formed on the light-transmitting substrate and wound. There is a fear. If the amount exceeds 5 parts by mass, the surface has many irregularities, but the transparency may deteriorate and the haze may also deteriorate.

The resin composition includes a (meth) acrylate compound having a weight average molecular weight of 1000 or less. When the resin composition is applied to a light transmissive substrate to form a film, a (meth) acrylate compound having a weight average molecular weight of 1000 or less permeates the light transmissive substrate, and the hydrophobic styrene particles are dispersed. The effect of the present invention can be suitably obtained by unevenly distributing the surface of the hard coat to form a desired uneven shape on the surface.
When the weight average molecular weight exceeds 1000, the effect of penetrating into the base material together with a solvent having high permeability described later or being unevenly distributed to the base material side is insufficient, and the desired effect of the present invention cannot be sufficiently obtained. .
The weight average molecular weight is a value obtained by gel permeation chromatography (GPC) in terms of polystyrene.

As the (meth) acrylate compound, OH group, COOH group, NH ₂ group, EO (ethylene oxide) modified group, PO (propylene oxide) modified group, caprolactone modified group, isocyanuric acid modified group, etc. in the same molecule And (meth) acrylate compounds having a highly hydrophilic substituent. Specifically, pentaerythritol tetraacrylate (Nippon Kayaku Co., Ltd .; PET30), pentaerythritol tetramethacrylate, pentaerythritol ethoxytetraacrylate (Daicelcytech; Ebecryl 40), trimethylolpropane ethoxytriacrylate (Daicelcytech; Ebecryl 160) , TMPEOTA), caproracone modified trimethylolpropane triacrylate (Daicel Cytec; Ebecryl 2047), isocyanuric acid EO modified diacrylate (Toagosei; M215), isocyanuric acid EO modified triacrylate (Toagosei; M315), isocyanuric acid Caprolactone-modified triacrylate (Toagosei; M325), trimethylolpropane EO-modified triacrylate Toagosei; M350, M360), trimethylolpropane PO-modified triacrylate (Toagosei; M320, M310), tripropylene glycol diacrylate (Toagosei; M220, Nippon Kayaku; TPGDA), polypropylene glycol diacrylate (Toagosei; M225), polyethylene glycol diacrylate (Toagosei; M240, M243, M245, M260), diethylene glycol dimethacrylate (Kyoeisha Chemical Co .; DEGDMA), polyethylene glycol dimethacrylate (Kyoeisha Chemical Co .; PEG200DMA), polypropylene Glycol dimethacrylate (Kyoeisha Chemical Company; PPG400DMA), Triethyleneglycol dimethacrylate (Kyoeisha Chemical Company; TREGDMA), Tetraethylene Glycol dimethacrylate (Kyoeisha Chemical Co., Ltd .; TTEGDMA), amine-modified polyester acrylate (Ebecryl 80, 81, 84, 83), caprolacone-modified dipentaerythritol hexaacrylate (Nippon Kayaku Co., Ltd .; DPCA20, DPCA30), methoxypolypropylene glycol polyethylene glycol Methacrylate (Shin Nakamura Chemical Co., Ltd .; NK ester M0617PE, NK ester M0320PE) and the like can be mentioned. Two or more of these may be used in combination.
Of these, pentaerythritol tetraacrylate, isocyanuric acid-modified diacrylate, isocyanuric acid-modified triacrylate, and polyethylene glycol diacrylate are preferable.
The (meth) acrylate compound having a weight average molecular weight of 1000 or less preferably has a refractive index of 1.45 to 1.65.

The resin composition contains a highly permeable solvent.
The solvent having high penetrability is a solvent that has high penetrability with respect to the light-transmitting substrate and can dissolve or swell the substrate. By including such a solvent, the styrene particles are likely to be unevenly distributed on the surface, and the effects of the present invention are likely to be remarkable. Moreover, generation | occurrence | production of an interference fringe can be suppressed.
Examples of the highly permeable solvent include ketones such as acetone, methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone, and diacetone alcohol; esters such as methyl formate, methyl acetate, ethyl acetate, butyl acetate, and ethyl lactate; nitromethane, Nitrogen-containing compounds such as acetonitrile, N-methylpyrrolidone and N, N-dimethylformamide; glycols such as methyl glycol and methyl glycol acetate; ethers such as tetrahydrofuran, 1,4-dioxane, dioxolane and diisopropyl ether; Halogenated hydrocarbons such as chloroform and tetrachloroethane; Glycol ethers such as methyl cellosolve, ethyl cellosolve, butyl cellosolve, cellosolve acetate; and others, dimethylsulfoxy , Include propylene carbonate, or mixtures thereof. Among these, at least one selected from the group consisting of methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone, acetone, cyclohexanone, methyl isobutyl ketone and methylene chloride is preferable.

The amount of the solvent having high permeability is appropriately adjusted according to the thickness of the hard coat layer to be formed, and is not particularly limited, but in the resin composition, with respect to 100 parts by mass of the binder resin solid content, It is preferable that it is 30-500 mass parts. When the resin composition is applied to a light-transmitting substrate when it is less than 30 parts by mass, the (meth) acrylate compound having a weight average molecular weight of 1000 or less does not sufficiently penetrate the light-transmitting substrate, There is a possibility that the effect of the present invention cannot be obtained sufficiently. In addition, the adhesion of the hard coat layer to be formed to the light-transmitting substrate may be insufficient. If the amount exceeds 500 parts by mass, a hard coat layer having a sufficient thickness may not be formed, and functions such as transparency of the optical laminate to be produced may be insufficient. A more preferable lower limit is 40 parts by mass, and a more preferable upper limit is 400 parts by mass.

The said resin composition may further contain other resin as a binder resin with the said (meth) acrylate type compound of the weight average molecular weight 1000 or less. The above-mentioned other resins are preferably highly transparent. For example, ionizing radiation curable resins, which are resins cured by ultraviolet rays or electron beams, ionizing radiation curable resins and solvent-drying resins (such as thermoplastic resins) It is possible to use a mixture with a resin that becomes a film only by drying a solvent added to adjust the solid content during the process, or a thermosetting resin. More preferred is an ionizing radiation curable resin. In the present specification, “resin” is a concept including resin components such as monomers and oligomers.

Examples of the ionizing radiation curable resin include compounds having one or more unsaturated bonds such as compounds having an acrylate functional group. Examples of the compound having one unsaturated bond include ethyl (meth) acrylate, ethylhexyl (meth) acrylate, styrene, methylstyrene, N-vinylpyrrolidone and the like. Examples of the compound having two or more unsaturated bonds include polymethylolpropane tri (meth) acrylate, hexanediol (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, pentaerythritol tri ( Reaction products such as (meth) allyllate and polyfunctional compounds such as (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol di (meth) acrylate And poly (meth) acrylate esters of polyhydric alcohols). In the present specification, “(meth) acrylate” refers to methacrylate and acrylate.

The (meth) acrylate may be an oligomer such as epoxy (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate, polybutadiene (meth) acrylate, or silicon (meth) acrylate. Two or more of these may be used in combination.

In addition to the above compounds, relatively low molecular weight polyester resins having unsaturated double bonds, polyether resins, acrylic resins, epoxy resins, urethane resins, alkyd resins, spiroacetal resins, polybutadiene resins, polythiol polyene resins, etc. It can be used as an ionizing radiation curable resin.

The ionizing radiation curable resin can be used in combination with a solvent-drying resin. By using the solvent-drying resin in combination, it is possible to effectively prevent coating defects on the coated surface, thereby obtaining a more excellent glossy blackness. The solvent-drying resin that can be used in combination with the ionizing radiation curable resin is not particularly limited, and a thermoplastic resin can be generally used.

The thermoplastic resin is not particularly limited. For example, a styrene resin, a (meth) acrylic resin, a vinyl acetate resin, a vinyl ether resin, a halogen-containing resin, an alicyclic olefin resin, a polycarbonate resin, or a polyester resin. Examples thereof include resins, polyamide-based resins, cellulose derivatives, silicone-based resins, rubbers, and elastomers. The thermoplastic resin is preferably amorphous and soluble in an organic solvent (particularly a common solvent capable of dissolving a plurality of polymers and curable compounds). In particular, from the viewpoints of film forming properties, transparency and weather resistance, styrene resins, (meth) acrylic resins, alicyclic olefin resins, polyester resins, cellulose derivatives (cellulose esters, etc.) and the like are preferable.

In the optical layered body of the present invention, when the material of the light transmissive substrate is a cellulose resin such as triacetyl cellulose (TAC), a preferred specific example of the thermoplastic resin is a cellulose resin such as nitrocellulose, Examples thereof include cellulose derivatives such as acetyl cellulose, cellulose acetate propionate, ethyl hydroxyethyl cellulose, acetyl butyl cellulose, ethyl cellulose, and methyl cellulose. By using a cellulose-based resin, it is possible to improve adhesion and transparency with a light-transmitting substrate or an antistatic layer formed as desired. Furthermore, in addition to the above-mentioned cellulose resin, vinyl acetate and copolymers thereof, vinyl chloride and copolymers thereof, vinyl resins such as vinylidene chloride and copolymers thereof, acetal resins such as polyvinyl formal and polyvinyl butyral, Examples include acrylic resins and copolymers thereof, acrylic resins such as methacrylic resins and copolymers thereof, polystyrene resins, polyamide resins, and polycarbonate resins.

Examples of the thermosetting resin include phenol resin, urea resin, diallyl phthalate resin, melamine resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, melamine-urea cocondensation resin, silicon resin, poly Examples thereof include siloxane resins.

Especially, as said other resin, it is preferable that it is a urethane (meth) acrylate type compound which is 1000 or more of weight average molecular weights and is 6 or more functional.

When the said resin composition contains other resin, the content ratio of the said other resin and the said (meth) acrylate type compound of the weight average molecular weight 1000 or less is 0 / 100-70 / 30 by resin solid content mass ratio. It is preferable that it is, and it is more preferable that it is 0/100-50/50.

The resin composition further includes an oxide of at least one element selected from the group consisting of silicon, aluminum, titanium, zinc, germanium, indium, tin, antimony, and zirconium (hereinafter, these are collectively referred to as a metal oxide). It is preferable to contain. By having the said metal oxide, the pencil hardness of the optical laminated body to manufacture can be improved, high refractive index can be provided, or antistatic performance can be provided.

As the metal oxide, colloidal silica having a photoreactive group on the surface is particularly preferable. The pencil hardness of the optical laminate to be manufactured can be made extremely excellent.
The photoreactive group is not particularly limited, and examples thereof include an acrylate group, a methacrylate group, and an epoxy group.
Colloidal silica having such a photoreactive group on the surface includes, for example, a method of reacting the surface of silica fine particles with the silane coupling agent having the photoreactive group.

The compounding amount of the metal oxide in the resin composition is not particularly limited, and the effect of improving the pencil hardness by having the metal oxide can be sufficiently enjoyed, and the optical laminate produced by the present invention described above can be used. It is preferable that the resin composition is appropriately blended as long as the effect is not impaired.

The resin composition may further contain an antistatic agent.
The antistatic agent is not particularly limited, and examples thereof include cationic compounds such as lithium salt compounds, quaternary ammonium salts, pyridinium salts, and primary to tertiary amino groups; sulfonate groups, sulfate ester bases, and phosphoric acids. Anionic compounds such as ester bases and phosphonic acid bases; Amphoteric compounds such as amino acids and aminosulfate esters; Nonionic compounds such as amino alcohols, glycerols, and polyethylene glycols; Organometallics such as tin and titanium alkoxides Compound; Metal chelate compounds such as acetylacetonate salts of the above organometallic compounds can be used. Compounds obtained by increasing the molecular weight of the compounds listed above can also be used. Also, polymerizability of organometallic compounds such as coupling agents having a tertiary amino group, a quaternary ammonium group or a metal chelate moiety and having a monomer, oligomer or functional group that can be polymerized by ionizing radiation. Compounds can also be used as antistatic agents.

Examples of the antistatic agent include lithium salts as the ion conductive antistatic agent.
Preferred examples of the lithium salt as the ion conductive antistatic agent include lithium perfluoroalkyl sulfonate, lithium bisperfluoroalkylsulfonimide, and lithium perchlorate. More specifically, preferred examples of the lithium perfluoroalkyl sulfonate include lithium trifluoromethyl sulfonate and lithium pentafluoroethyl sulfonate. The lithium bisperfluoroalkyl sulfonimide includes lithium bistrifluoromethanesulfonimide. Or lithium bispentafluoroethanesulfonimide etc. can be mentioned preferably. Among these, lithium bistrifluoromethanesulfonimide or lithium bispentafluoroethanesulfonimide is particularly preferable because it is excellent in environmental reliability.

Examples of the antistatic agent include ion conductive antistatic agents such as electron conductive polymers and organic boron compounds.
Examples of the electron conductive polymer include aliphatic conjugated polyacetylene, polyacene, polyazulene, aromatic conjugated polyphenylene, heterocyclic conjugated polypyrrole, polythiophene, polyisothianaphthene, heteroatom-containing polyaniline, Polythienylene vinylene, mixed conjugated poly (phenylene vinylene), double chain conjugated system having a plurality of conjugated chains in the molecule, derivatives of these conductive polymers, and conjugated polymers thereof There may be mentioned at least one selected from the group consisting of conductive composites which are polymers in which chains are grafted or block-copolymerized onto saturated polymers. Among these, it is more preferable to use an organic antistatic agent such as polythiophene, polyaniline, polypyrrole. By using the above-mentioned organic antistatic agent, it is possible to exhibit excellent antistatic performance and at the same time increase the total light transmittance of the optical laminate and reduce the haze value. An anion such as an organic sulfonic acid or iron chloride can be added as a dopant (electron donor) for the purpose of improving conductivity and improving antistatic performance. In view of the effect of dopant addition, polythiophene is particularly preferable because of its high transparency and antistatic properties. As the polythiophene, oligothiophene can also be preferably used. The derivatives of these conductive polymers are not particularly limited, and examples thereof include polyphenylacetylene, polydiacetylene alkyl group-substituted products, and the like.
As the organic boron compound, an ionic conjugate of polyether, polyaldehyde or polyketone and boron is particularly preferable.

Examples of the antistatic agent include conductive fine particles.
Specific examples of the conductive fine particles include those made of a metal oxide. Examples of such metal oxides include ZnO (refractive index 1.90, the numerical value in parentheses below represents the refractive index), CeO ₂ (1.95), Sb ₂ O ₂ (1.71), SnO. ₂ (1.997), indium tin oxide (1.95) often referred to as ITO, In ₂ O ₃ (2.00), Al ₂ O ₃ (1.63), antimony-doped tin oxide (abbreviation) ATO, 2.0), aluminum-doped zinc oxide (abbreviation: AZO, 2.0), and the like. The fine particles refer to those having a so-called submicron size of 1 micron or less, and preferably those having an average particle size of 0.1 nm to 0.1 μm. Further, according to a preferred embodiment of the present invention, the primary particle size of the fine particles is about 30 to 70 nm, and the secondary particle size is preferably about 200 nm or less.

Other examples of the antistatic agent include carbon materials such as carbon nanotubes, carbon nanohorns, and fullerenes. The carbon nanotube is a single-layer or multi-layer tubular carbon polyhedron having a structure in which a graphite (graphite) sheet having a carbon 6-membered ring structure as a main structure is closed in a cylindrical shape. The carbon nanohorn has a conical shape in which the tip of the carbon nanotube is closed.
The carbon nanotube is not particularly limited. For example, a single-walled carbon nanotube (SWNT); a multi-walled carbon nanotube (MWNT); a carbon nanohorn (carbon nanohorn: similar to a carbon nanotube) (Structure in which 6-membered rings of carbon are regularly arranged) This is a nanometer-sized structure based on a sheet, a kind of nanocarbon material, a graphite sheet is a single layer, and the tip of one is 5 And a horn (horn) graphite sheet containing a five-membered ring). A mixture thereof may also be used.

The blending amount of the antistatic agent in the resin composition is not particularly limited, and it is preferably blended appropriately in the resin composition as long as the effects of the optical laminate produced according to the present invention are not impaired. .

The resin composition may further contain an antifouling agent. Examples of the antifouling agent include fluorine compounds and / or silicon compounds. By adding an antifouling agent, the water repellency, oil repellency, and fingerprint wiping property of the hard coat layer to be formed can be improved.

In addition to the styrene particles, the binder resin, the highly permeable solvent, and the components described above, the resin composition can contain other components as necessary within a range that does not impair the effects of the present application. Examples of the other components include a photopolymerization initiator, a leveling agent, a crosslinking agent, a curing agent, a polymerization accelerator, a viscosity modifier, and other resins.
Examples of the photopolymerization initiator include acetophenones (for example, trade name Irgacure 184, 1-hydroxy-cyclohexyl-phenyl-ketone manufactured by Ciba Specialty Chemicals, trade name Irgacure 907, 2 manufactured by Ciba Specialty Chemicals). -Methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one), benzophenones, thioxanthones, benzoin, benzoin methyl ether, aromatic diazonium salts, aromatic sulfonium salts, aromatic iodonium Examples thereof include salts, metathelone compounds, and benzoin sulfonic acid esters. These may be used alone or in combination of two or more.
The amount of the photopolymerization initiator added is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the binder resin solid content.
Known leveling agents, crosslinking agents, curing agents, polymerization accelerators, and viscosity modifiers may be used.
Moreover, it is preferable that the said resin composition does not contain the particle | grains which provide surface haze.

The resin composition is obtained by mixing and dispersing the specific styrene particles, the binder resin, the highly permeable solvent, and other components described above.
A paint shaker or a bead mill may be used for the mixing and dispersing.

The manufacturing method of the optical laminated body of this invention has the process of apply | coating the said resin composition on a transparent base material, and forming a hard-coat layer.
The light-transmitting substrate preferably has transparency, smoothness, heat resistance, and excellent mechanical strength. Specific examples of the material forming the light-transmitting substrate include cellulose compounds such as triacetyl cellulose (TAC), cellulose diacetate, and cellulose acetate butyrate. Especially, it is more preferable that it is a triacetyl cellulose (TAC) from a viewpoint that it is easy to exhibit the effect of invention.

The thickness of the light transmissive substrate is preferably 20 to 300 μm, a more preferable lower limit is 30 μm, and a more preferable upper limit is 200 μm.

Furthermore, the light-transmitting substrate is called an anchor agent or primer in addition to physical treatment such as corona discharge treatment and oxidation treatment for improving adhesion when a hard coat layer is formed thereon. Application of the paint may be performed in advance. Moreover, when the said light-transmitting base material is a triacetyl cellulose, you may perform a saponification process previously. The saponification treatment may be performed by a known method / condition.

The light-transmitting substrate may have an antistatic layer on the surface on which the hard coat layer is formed. Even in the case of an optical laminate in which an antistatic layer and a hard coat layer are sequentially formed on a light-transmitting substrate, the effects of the present invention can be sufficiently exerted. The antistatic layer can be formed by a known method using a composition containing the antistatic agent and a resin.

The coating method is not particularly limited, and a known method can be used, and examples thereof include a roll coating method, a Miya bar coating method, and a gravure coating method.
The coating amount of the resin composition is preferably ¹ to 30 g / m ² . If it is less than 1 g / m ² , the optical laminate may have a weak hard coat property. If it exceeds 30 g / m ² , curling (warping) increases and cracks and cracks are likely to occur, causing trouble. In addition, the price of the binder resin may increase and the cost may increase. The coating amount is more preferably 1 to 30 g / ^{m 2,} more preferably 5 to 20 g / ^{m 2.}

The hard coat layer can be formed by applying the resin composition to a light-transmitting substrate, then heating it as necessary, and curing it by irradiation with active energy rays.
Examples of the active energy ray irradiation include irradiation with ultraviolet rays or electron beams. Specific examples of the ultraviolet light source include light sources such as an ultrahigh pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light fluorescent lamp, and a metal halide lamp. As an ultraviolet wavelength, a wavelength range of 190 to 380 nm can be used. Specific examples of the electron beam source include various electron beam accelerators such as a cockcroft-wald type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type.
In the case of irradiation with the ultraviolet rays, it is preferably performed in a nitrogen atmosphere in that the layer does not become cloudy due to curing.

The hard coat layer preferably exhibits a hardness of “H” or higher in a pencil hardness test specified by JIS 5600-5-4 (1999). By having the above hardness, the scratch resistance is good.

Since the method for producing an optical laminate of the present invention is to form an optical laminate by the above-described method, in the production process of the optical laminate, a laminate in which a hard coat layer is formed on a light-transmitting substrate. When the body sheet is wound up, the sheets do not stick to each other and can be cured with low energy to form a layer, so that the optical laminate can be suitably formed. Moreover, the sheet | seat obtained by the manufacturing method of the optical laminated body of this invention has high permeability | transmittance.

The method for producing an optical layered body of the present invention may further include a step of forming a low refractive index layer.
The low refractive index layer is formed on the surface of the hard coat layer and has a lower refractive index than that of the hard coat layer. According to a preferred aspect of the present invention, the hard coat layer has a refractive index of 1.45 or more, and the low refractive index layer has a refractive index of less than 1.45, preferably 1.40 or less. Those are preferred.

The low refractive index layer is composed of 1) a resin containing silica or magnesium fluoride, 2) a fluorine resin which is a low refractive index resin, 3) a fluorine resin containing silica or magnesium fluoride, 4) silica or fluorine. You may be comprised with either of the thin films of magnesium halide.

The optical layered body obtained by the method for producing an optical layered body of the present invention has a hard coat layer on a light-transmitting substrate, but is necessary in addition to the antistatic layer and the low refractive index layer. Accordingly, an arbitrary layer may be provided with an antiglare layer, an antifouling layer, a high refractive index layer, a medium refractive index layer, or the like. The antiglare layer, antifouling layer, high refractive index layer, medium refractive index layer is a composition to which a commonly used antiglare agent, antifouling agent, high refractive index agent, medium refractive index agent or resin is added. It is good to prepare and to form each layer by a well-known method.

Thus, the manufacturing method of the optical laminate of the present invention prevents the laminates from sticking to each other when the hard coat layer is formed on the light-transmitting substrate and wound up in the production process. Suitable for optical laminates that can be easily peeled off and have desired properties without affecting the optical properties even if the optical laminate is produced by laminating various functional layers in the subsequent steps. Can be obtained. An optical laminate obtained by such a method for producing an optical laminate of the present invention is also one aspect of the present invention.

The total light transmittance of the optical layered body is preferably 91% or more. If it is less than 91%, color reproducibility may be impaired when mounted on the display surface. The total light transmittance is more preferably 95% or more.

The haze value of the optical layered body is preferably 0.7% or less. If it exceeds 0.7%, when it is mounted on the display surface, it appears white and has a haze, which may impair the color reproducibility. The haze value is more preferably 0.3% or less.

One mode of an optical laminate obtained by the method for producing an optical laminate of the present invention will be described with reference to FIG. FIG. 1 shows an optical laminate including a hard coat layer 1 and a light-transmitting substrate 2 in order from the top. The hard coat layer 1 has fine irregularities on its surface. As another aspect of the optical laminate obtained by the method for producing an optical laminate of the present invention, an optical laminate comprising a hard coat layer 1, an antistatic layer 3, and a light transmissive substrate 2 as shown in FIG. It may be a body. The optical layered body of the present invention may be composed of any layer depending on the purpose, and is not limited to the above-described embodiment.
The method for producing an optical layered body of the present invention is obtained by winding a low-refractive index layer or the like on a hard coat layer after winding a hard coat layer formed on a light-transmitting substrate once. Also, quality is good. Thus, the optical laminated body obtained by the manufacturing method of the optical laminated body of this invention is also one of this invention.

The optical layered body of the present invention can be made into a polarizing plate by providing the optical layered body on the surface of the polarizing element opposite to the surface on which the hard coat layer is present in the optical layered body. Such a polarizing plate is also one aspect of the present invention.

The polarizing element is not particularly limited, and for example, a polyvinyl alcohol film, a polyvinyl formal film, a polyvinyl acetal film, an ethylene-vinyl acetate copolymer saponified film, etc. dyed and stretched with iodine or the like can be used. In the laminating process of the polarizing element and the optical laminate of the present invention, it is preferable to saponify the light-transmitting substrate. By the saponification treatment, the adhesiveness is improved and an antistatic effect can be obtained.

The present invention is also an image display device including the optical laminate or the polarizing plate on the outermost surface. The image display device may be a non-self-luminous image display device such as an LCD, or a self-luminous image display device such as a PDP, FED, ELD (organic EL, inorganic EL), or CRT.

An LCD, which is a typical example of the non-self-luminous type, includes a transmissive display body and a light source device that irradiates the transmissive display body from the back. When the image display device of the present invention is an LCD, the optical laminate of the present invention or the polarizing plate of the present invention is formed on the surface of the transmissive display.

In the case where the present invention is a liquid crystal display device having the optical laminate, the light source of the light source device is irradiated from the lower side of the optical laminate. Note that in the STN liquid crystal display device, a retardation plate may be inserted between the liquid crystal display element and the polarizing plate. An adhesive layer may be provided between the layers of the liquid crystal display device as necessary.

The PDP, which is the self-luminous image display device, includes a front glass substrate and a rear glass substrate disposed so as to face the front glass substrate with a discharge gas sealed therebetween. When the image display device of the present invention is a PDP, the above-mentioned optical laminate is provided on the surface of the surface glass substrate or the front plate (glass substrate or film substrate).

The self-luminous image display device is an ELD device that emits light when a voltage is applied, such as zinc sulfide or a diamine substance: a phosphor is deposited on a glass substrate, and the voltage applied to the substrate is controlled. It may be an image display device such as a CRT that converts light into light and generates an image visible to the human eye. In this case, the optical laminated body described above is provided on the outermost surface of each display device as described above or the surface of the front plate.

In any case, the optical layered body of the present invention can be used for display display of a television, a computer, a word processor or the like. In particular, it can be suitably used for the surface of high-definition image displays such as CRTs, liquid crystal panels, PDPs, and ELDs.

Since the manufacturing method of the optical laminated body of this invention consists of the structure mentioned above, when winding a sheet | seat in a manufacturing process, it does not stick together, but forms an optical laminated body which has high transparency suitably. It is something that can be done. For this reason, the optical laminated body obtained by the manufacturing method of the present invention includes a cathode ray tube display (CRT), a liquid crystal display (LCD), a plasma display (PDP), an electroluminescence display (ELD), a field emission display (FED), and the like. It can be suitably applied to.

EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, the content of this invention is limited to these embodiments and is not interpreted. Unless otherwise specified, “part” and “%” are based on mass.

(Production Example 1 composition 1 for forming a hard coat layer)
Components of the following composition were mixed to prepare composition 1 for forming a hard coat layer.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 200 nm) 0.5 parts by mass, leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.2 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 2 Hard coat layer forming composition 2)
Components of the following composition were mixed to prepare composition 2 for forming a hard coat layer.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 200 nm) 0.1 parts by mass, leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.2 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 3 composition 3 for forming a hard coat layer)
Components of the following composition were mixed to prepare composition 3 for forming a hard coat layer.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 200 nm) 5 parts by mass, leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.5 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 4 composition 4 for forming a hard coat layer)
Components of the following composition were mixed to prepare composition 4 for forming a hard coat layer.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 50 nm) 0.5 parts by mass, leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.5 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 5 composition 5 for forming a hard coat layer)
The component of the following composition was mixed and the composition 5 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 300 nm) 0.5 parts by mass, leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.5 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 6 composition 6 for forming a hard coat layer)
The composition of the following composition was mixed and the composition 6 for hard-coat layer formation was prepared.
Dipentaerythritol hexaacrylate (Nippon Kayaku DPHA, weight average molecular weight 524) 7 parts by mass Isocyanuric acid-modified triacrylate (Toa Gosei M315, weight average molecular weight 423) 3 parts by mass Polymerization initiator (Irgacure 184; Ciba・ Specialty Chemicals Co., Ltd.) 0.4 parts by mass ・ Styrene fine particles (average particle size 200 nm) 0.5 parts by mass ・ Leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.2 parts by mass ・ Methyl ethyl ketone 10 parts by mass Part

(Production Example 7 composition 7 for forming a hard coat layer)
Components of the following composition were mixed to prepare hard coat layer forming composition 7.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 200 nm) 0.5 parts by mass, leveling agent (manufactured by Dainippon Ink, MegaFuck MCF350-5) 0.5 parts by mass, methyl acetate 10 parts by mass Part

(Production Example 8 composition 8 for forming a hard coat layer)
The component of the following composition was mixed and the composition 8 for hard-coat layer formation was prepared.
-Urethane acrylate (Nippon Gosei UV1700B, weight average molecular weight 2000) 4 parts by mass-Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 3 parts by mass-Isocyanuric acid-modified triacrylate (Toa Gosei M315, weight) Average molecular weight 423) 3 parts by mass / polymerization initiator (Irgacure 184; manufactured by Ciba Specialty Chemicals) 0.4 parts by mass / styrene fine particles (average particle size 200 nm) 0.5 parts by mass / leveling agent (Dainippon Ink) , MegaFac MCF350-5) 0.5 parts by mass / Methyl ethyl ketone 10 parts by mass

(Production Example 9 composition for forming a hard coat layer 9)
The component of the following composition was mixed and the composition 9 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass. Styrene fine particles (average particle size 200 nm) 10 parts by mass. Leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.2 parts by mass. Methyl ethyl ketone 10 parts by mass.

(Production Example 10 composition 10 for forming a hard coat layer)
The composition of the following composition was mixed and the composition 10 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 200 nm) 0.001 parts by mass, leveling agent (manufactured by Dainippon Ink, MegaFuck MCF350-5) 0.2 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 11 composition 11 for forming a hard coat layer)
The component of the following composition was mixed and the composition 11 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba 0.4 parts by mass, styrene fine particles (average particle size 500 nm) 0.5 parts by mass, leveling agent (manufactured by Dainippon Ink, MegaFuck MCF350-5) 0.2 parts by mass, 10 parts by mass of methyl ethyl ketone

(Production Example 12 Hard coat layer forming composition 12)
The composition of the following composition was mixed and the composition 12 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, styrene fine particles (average particle size 200 nm) 0.5 parts by mass, leveling agent (manufactured by Dainippon Ink, Megafac MCF350-5) 0.2 parts by mass, toluene 10 parts by mass

(Production Example 13 Hard coat layer forming composition 13)
-The component of the following composition was mixed and the composition 13 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid-modified diacrylate (M215, weight average molecular weight 333 by Toagosei Co., Ltd.) 3 parts by weight Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals Co., Ltd.) 0.4 parts by mass, silica fine particles (average particle size 200 nm) 0.5 parts by mass, leveling agent (Dainippon Ink, MegaFuck MCF350-5) 0.5 parts by mass, methyl ethyl ketone 10 parts by mass

(Production Example 14 Hard coat layer forming composition 14)
The component of the following composition was mixed and the composition 14 for hard-coat layer formation was prepared.
Pentaerythritol triacrylate (Nippon Kayaku PET30, weight average molecular weight 298) 7 parts by mass Isocyanuric acid modified diacrylate (Toa Gosei M215, weight average molecular weight 333) 3 parts by mass Polymerization initiator (Irgacure 184; Ciba Specialty Chemicals)
0.4 parts by mass, benzoguanamine, melamine, formaldehyde fine particles (average particle size 2000 nm) 0.5 parts by mass, leveling agent (manufactured by Dainippon Ink, MegaFuck MCF350-5) 0.5 parts by mass, 10 parts by mass of methyl ethyl ketone

(Production Example 15 Hard coat layer forming composition 15)
Components of the following composition were mixed to prepare hard coat layer forming composition 15.
Tricyclodecane dimethanol diacrylate (IRR214K manufactured by Daicel Cytec, weight average molecular weight 304, containing hydrophobic substituent) 10 parts by mass Polymerization initiator (Irgacure 184; manufactured by Ciba Specialty Chemicals) 0.4 parts by mass Styrene fine particles (average particle size: 200 nm) 0.5 parts by mass / leveling agent (Dainippon Ink, Megafac MCF350-5) 0.2 parts by mass / methyl ethyl ketone 10 parts by mass

Example 1
The hard coat layer forming composition 1 described above was applied to one side of a triacetyl cellulose film (thickness 80 μm) at a wet weight of 26 g / m ² (dry weight 13 g / m ² ). It dried at 70 degreeC for 60 ^second, and irradiated with the ultraviolet-ray 200mJ / cm < ² >, and formed the optical laminated body which has a hard-coat layer.

Examples 2-8, Comparative Examples 1-7
In Example 1, the optical laminated body was manufactured like Example 1 except having used the compositions 2-15 for hard-coat layer formation instead of the composition 1 for hard-coat layer formation used.

About the obtained optical laminated body, it evaluated by the following item. The results are shown in Table 1.
(Adhesion prevention effect)
A film in which various hard coat layers were laminated on a triacetyl cellulose film substrate was prepared and wound on a roll. After leaving it at room temperature for 5 days, it was wound around an empty roll and visually checked for sticking.
○: Without sticking ×: With sticking

(Total light transmittance)
The total light transmittance (%) was measured according to JIS K-7361 using a haze meter (manufactured by Murakami Color Research Laboratory, product number: HM-150), and evaluated according to the following criteria.
○: Total light transmittance of 91% or more ×: Total light transmittance of less than 91%

(Haze value)
About haze value (%), it measured according to JISK-7136 using the haze meter (Murakami Color Research Laboratory make, product number; HM-150), and evaluated it on the following reference | standard.
○: Haze value 0.7% or less ×: Haze value exceeds 0.7%

(Generation of interference fringes)
Adhere black tape to prevent back reflection on the surface opposite to the hard coat layer of the optical laminate, and visually observe the optical laminate from the surface of the hard coat layer. Evaluated.
○: No interference fringes were generated.
X: Interference fringes were generated.

From Table 1, the optical laminates of the examples have excellent anti-sticking effects, good total light transmittance, good haze, and no occurrence of interference fringes, whereas the optical laminates of the comparative examples , Not all items were good.

The optical laminate of the present invention can be suitably applied to a cathode ray tube display (CRT), a liquid crystal display (LCD), a plasma display (PDP), an electroluminescence display (ELD), a field emission display (FED), and the like. .

It is an example of the schematic diagram of the optical laminated body of this invention. It is an example of the schematic diagram of the optical laminated body of this invention.

Explanation of symbols

1 Hard coat layer 2 Light transmissive substrate 3 Antistatic layer

Claims (16)

A method for producing an optical laminate having a light-transmitting substrate and a hard coat layer,
Contains 0.1 to 5 parts by mass of styrene particles having an average particle size of 10 to 300 nm with respect to 100 parts by mass of resin solids, and includes a (meth) acrylate compound having a weight average molecular weight of 1000 or less and a highly permeable solvent. The manufacturing method of the optical laminated body characterized by having the process of apply | coating a resin composition on the said transparent base material, and forming a hard-coat layer. The method for producing an optical laminate according to claim 1, wherein the (meth) acrylate compound having a weight average molecular weight of 1000 or less has a refractive index of 1.45 to 1.65. 3. The optical laminate according to claim 1, wherein the solvent having high permeability is at least one selected from the group consisting of methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone, acetone, cyclohexanone, methyl isobutyl ketone, and methylene chloride. Manufacturing method. 4. The optical laminate according to claim 1, wherein the resin composition further contains an oxide of at least one element selected from the group consisting of silicon, aluminum, titanium, zinc, germanium, indium, tin and antimony. Body manufacturing method. The method for producing an optical laminate according to claim 1, wherein the resin composition further contains an antistatic agent. The method for producing an optical layered body according to claim 1, 2, 3, 4, or 5, wherein the resin composition further contains a silicon-based compound and / or a fluorine-based compound. The method for producing an optical laminate according to claim 1, wherein the light-transmitting substrate is triacetylcellulose. 8. The method for producing an optical laminate according to claim 1, wherein the light transmissive substrate has an antistatic layer on a surface on which a hard coat layer is formed. The method for producing an optical layered body according to claim 1, 2, 3, 4, 5, 6, 7 or 8, further comprising a step of forming a low refractive index layer. An optical laminated body obtained by the method for producing an optical laminated body according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9. The optical laminate according to claim 10, wherein the total light transmittance is 91% or more. The optical laminate according to claim 10 or 11, wherein the haze value is 0.7% or less. An optical laminate having a light transmissive substrate and a hard coat layer,
The light transmissive substrate is triacetyl cellulose,
The optical layered body, wherein the hard coat layer is a resin layer containing 0.1 to 5 parts by mass of styrene particles having an average particle diameter of 10 to 300 nm with respect to 100 parts by mass of the resin. A self-luminous image display device comprising the optical laminate according to claim 10, 11, 12 or 13 on the outermost surface. A polarizing plate comprising a polarizing element,
The polarizing plate comprises the optical laminate according to claim 10, 11, 12 or 13 on the surface of a polarizing element. A non-self-luminous image display device comprising the optical laminate according to claim 10, 11, 12 or 13 or the polarizing plate according to claim 15 on an outermost surface.

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