TW201130658A - Method for producing optical film, optical film, polarizer and image display device - Google Patents

Abstract

Disclosed is an optical film comprising a graded refractive index hard coat layer which is easy to produce and has high productivity. The method for producing the optical film of the present invention comprises the steps of: (i) preparing an optically-transparent substrate, (ii) preparing a first curable resin composition for a hard coat layer and a second curable resin composition for the same, the first curable resin composition comprising a first binder component and a first solvent, comprising no high refractive index fine particles and having a viscosity of 3 to 100 mPa*s, and the second curable resin composition comprising a second binder component, a second solvent and high refractive index fine particles which have an average particle diameter of 1 to 100 nm, and having a viscosity of 10 to 100 mPa*s, (iii) forming coating films by applying the first and second curable resin compositions simultaneously and adjacently to one side of the optically-transparent substrate in this order from the substrate, and (iv) forming a graded refractive index hard coat layer by curing the coating films obtained in the step (iii) by exposure to light.

Description

201130658 /, the invention description: [Technical field of the invention] The present invention relates to liquid (which), organic electroluminescence (with: display (called, cathode tube display device display (image display (four) EL) or plasma The optical thin film such as a display (PDP) and the silk film disposed on the display have the [prior art]: the description of the display towel is required to give the display (10) image display surface a resistance that is not A# in the operation. For the purpose of this, the optical film of the hard coating (hereinafter, simply referred to as "sink") layer and the film I and 丨 can be used for the image of the substrate. In addition, in the display as described above, in order to improve the visibility of the display surface, it is required to reflect less light from the external light such as a fluorescent illuminator. The method is generally known to provide a low refractive index layer having the lowest refractive index on the outermost surface of the display surface, and an antireflection thin layer having a high refractive index layer having a high refractive index is disposed on the display surface of the low refractive index layer, and is disposed on the display. The previous method. Also known An antireflection film having a medium refractive index layer, a refractive index 咼 layer, and a low refractive index layer is provided on the display side. To form a layer of such a refractive index to a high degree, a refractive index layer containing high refractive index microparticles is generally used. Adjacent to the low refractive index layer, the functional layer such as the HC layer and the antistatic layer adjacent to the low refractive index contains high refractive index particles 099143668 4 201130658 (for example, Patent Document 2). When the layer or the local refractive index layer and the functional layer such as the Hc layer are formed in a sequential manner (sequentially), the number of steps increases and the manufacturing cost increases, and the high refractive index layer and the HC layer and the like Further, in the invention of Patent Document 2, the "high refractive index fine particles are biased in the vicinity of the interface on the low refractive index layer side of the hard coat layer and form a skin layer, but the skin layer and other portions in the hard coat layer are formed. The boundary is conspicuous, so there is a problem of generating interference fringes in this boundary. In the invention of Patent Document 3, the optical film which provides low reflection and prevents interference fringes is attached to the substrate. A thin film of a hard coat layer, a high refractive index oblique hard coat layer and a low refractive index layer are sequentially laminated, and a high refractive index oblique hard coat layer in which a hard coat layer and a high refractive index oblique hard coat layer are integrated according to a specific method is proposed. In addition, in the invention of Patent Document 3, it is also difficult to obtain a refractive index-slanted hard coat layer with good efficiency, and a method of obtaining a refractive index-slanted hard coat layer with higher productivity and high productivity is required. [Prior Art Document] φ [Patent Document] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2008-165040 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2009-086360 (Patent Document 3) JP-A-2009-265658 099143668 ^ 201130658 SUMMARY OF INVENTION [Problem to be solved by the invention] It is not necessary to solve the above problems in order to provide an easier and more obvious device for producing a gate. An optical film for tilting a hard coat layer for the purpose of the present invention provides a polarizing plate and an image having such an optical film (a means for solving the problem) If the hair is prepared, the composition containing the ruthenium refractive index microparticles of the ruthenium and the high refractive index microparticles having no specific viscosity are contained, and the laminate is not contained by the laminate side of the substrate side. When the composition of the high refractive index fine particles and the high refractive index fine particles are coated at the same time as the arrangement of the composition, the expansion of the high refractive index fine particles can be controlled, and the refractive index tilt can be obtained with high productivity. The optical properties of the hard coat layer and the completion of the present invention are achieved. The method for producing an optical film of the present invention which solves the above problems, comprising the steps of: transferring a light-transmitting substrate, (9) preparing a first binder component and a solvent, and not containing high refractive index particles And the viscosity is _ OmPa s the first hard coat layer for the hard coat composition and the high refractive index fine particles containing the flat granules 1-2 1 〇 0 nm, the second adhesive component and the first cold J, and the viscosity a step of using a curable tree sap composition for a second hard coat layer of 1 〇 1 〇〇 mPa · s, (4) a side of the light-transmitting substrate, and a side of the light-permeable substrate The curable resin composition for the first hard coat layer and the curable resin composition for the second hard coat layer of the 099143668 201130658 are attached, and the curable resin composition for the first hard coat layer is compared with the first The second hard coat layer is composed of a curable resin: • a step of simultaneously coating the film on the side of the light-transmissive substrate to form a coating film: a step of '(w) for the above step ii) and a coating film The step of hardening the light to form a refractive index oblique hard coat layer. The curable resin composition (hereinafter referred to simply as "first composition") of the first hard coat layer which does not contain the high refractive index fine particles having a viscosity of 3 to 1 〇〇 mPa·s, and the average particle diameter The high-refractive-index microparticles of the original job are the curable resin composition for the second hard coat layer of mPa.s (hereinafter, simply referred to as "second composition"", and the first composition is penetrated by light. When the substrate side is adjacent to the same and coated at the same time and hardened, the refractive index oblique hard coat layer can be obtained easily and with high productivity. Here, the refractive index of the refractive index tilting HC layer means the refractive index. The refractive index of the opposite side interface of the light-transmitting substrate of the HC layer is inclined. Further, the inclination of the refractive index means that the interface on the opposite side of the light-transmitting substrate faces the light in the inclined layer of the refractive index. The refractive index of the transparent substrate side interface changes continuously. • The pure refractive index is tilted in the HC layer. The refractive index is tilted and can be confirmed by the following method. The refractive index is tilted by the HC layer by carbon plating (4). The deep red part of the limb of the inclined HC layer is exposed, and the ray photoelectron spectroscopy The (XPS) 露出 exposes the high refractive index fine particle content of the portion t. According to this method, the high refractive index of the depth direction of the refractive index slanting layer is specified to be 099143668 7 201130658. The existence amount distribution of the fine particles. Since the refractive index in the depth point is related to the amount of the high refractive index fine particles, the presence of the high refractive index fine particles in the depth direction of the HC layer by the refractive index is inclined, and it is confirmed that the refractive index is inclined. The optical film was embedded in a thermosetting resin, and an ultra-micro-blade of the optical film produced by the LEICA micro-microtome was used to observe the thickness of the claw and was observed by a transmission electron microscope (TEM). The so-called high-refractive-index microparticles _ can be measured as a refractive index of 15 〇 〜 2 microparticles. In the method for producing an optical thin enamel of the present invention, the above-mentioned first hard-coating sclerosing hemp composition and/or second money The layered material (4) is a difference between the viscosity of the chemical resin composition of the optical thin film of the present invention and the viscosity of the above-mentioned hard coat of the first hard coat layer. The high refractive index in the oblique hard coating of the hard-disc/hard-coated resin group is as follows: it is preferable to control the refractive index in the manufacture of the optical film of the present invention == In the cellulose substrate, the above-mentioned first, a ^ 'the light-transmitting substrate is impregnated, and is 099143668 from the viewpoint of suppressing the optical film = the interference fringe of the triacetyl cellulose substrate. 201130658

After that, you can also enter (step) including (V) on

The layer can further improve the optical thinness _ anti-reflection. In the above-mentioned (iv) step, the refractive index 値 coating is directly formed by forming a low-refractive-on-oxidation-type fine particle by folding a low refractive index as described above, since it can be used in the optical film of the present invention. In the production method, it is preferred that the low-refractive-index layer composition of the rate layer contains a hollow two-pair optical film to provide excellent antireflection properties. In the method for producing an optical film of the present invention, the low refractive index layer rib formed by the low refractive index layer is hardened, and at least a low refractive index selected from the group consisting of a gold compound and a curable fluororesin is selected. In the case of a material, an optical film having sufficient antireflection properties can also be obtained. In the method for producing an optical film of the present invention, the composition for a low refractive index layer which forms the low refractive index layer is cured, and does not contain hollow ceria particles, and is selected from the group consisting of metal fluoride and curable fluororesin. At least a low-refractive-index material of a suitable type is preferable in that it is sufficient to prevent both reflectance and alkali resistance from being established. In the method for producing an optical film of the present invention, the step (1) and the step (iii) may further include (vi) forming an antistatic on the surface of the light penetrating substrate with a refractive index inclined hard coat layer. The steps of the layer. The antistatic property of the optical film can be improved via the antistatic layer. The optical film of the present invention is a film of light 099143668 9 201130658 obtained by any of the above production methods. The optical film of the present invention is an optical film which is inclined to a hard coat layer on one side of the light-transmitting substrate to a "== rate, which is characterized in that the refractive index is inclined to the average thickness of the main layer 3! High-refractive-index microparticles, and in the case of tilting hard (4), the ratio of the presence of the refractive index of the hard coating (4) in the thickness direction of the hard coating (4) is less than that of the present invention. In the optical film, the refractive index-inclination hard coat layer may be formed from the surface of the light-transmitting substrate opposite to the surface of the surface of the light-transmitting substrate until the refractive index = the total amount of the high refractive index fine particles of 90% or more. Thus, by distributing the high refractive index fine particles, the refractive index of the surface of the light-transmitting substrate opposite to the surface side of the HC layer can be effectively =0. The optical thin film of the present invention can also be formed into the above refractive index. The inclined hard coat layer contains a tackifier. In the optical thin raft of the present invention, the above-mentioned light-transmitting substrate is a matrix of triethylene fluorene fiber and soil material constituting the above-mentioned refractive index oblique hard coat layer, and also exists. The refractive index of the three = 醯 cellulose substrate is inclined on the side of the hard coat layer The interface is preferably from the viewpoint of suppressing interference fringes in the optical phase. In the optical film of the present invention, the light of the above-mentioned refractive index tilting hard coat layer penetrates the substrate to the _ plane, and the step is made by low refraction. The rate layer or the refractive index is inclined on the hard enthalpy side and the inter-refractive-index layer and the low-refractive-index layer are preferable because the antireflection property of the optical film can be further improved. 099143668 201130658 In the optical _ towel of the present invention, the above The low-fold layer contains hollow silica fine particles, which is preferable because it can prevent the reflection of the optical thinner. In the optical film of the present invention, the low refractive index layer contains the metal: fluoride. In the case of the optical film of the present invention, the low refractive index layer does not contain the hollow silica dioxide granules, and the composition of the group is low. In the case where at least one low-fat component is selected from the group consisting of a metal fluoride and a fluororesin, both of the antireflection property and the fiscal property are satisfied. In the light of the present invention, the light is wear The antistatic layer is further provided between the transparent substrate and the refractive index oblique hard coat layer, and the antistatic property of the optical film is further improved. Therefore, in the optical film of the present invention, the optical film may be used. The optical film was placed in a 2 N aqueous solution of sodium hydroxide maintained at 55 ° C for 2 minutes, and then, after washing with water, '7 (TC dry for 5 minutes, and secondly, the ugly wire field was rubbed with a load of 0.98 N). When the surface of the low refractive index layer is rubbed back and forth one turn, the low refractive index layer is imparted with no damage and peeling properties. - The polarizing plate of the present invention is characterized in that one side of the polarizing element is used for the above optical optical field. The optical display device of the present invention is characterized in that the optical display film of the present invention is provided with the optical film. (Effect of the invention) 099143668 11 201130658 The manufacture of the film of the present invention In the method, the first composition of the first composition containing no high refractive index fine particles and the second composition containing the specific viscosity of the high refractive index fine particles are adjacent to each other, and (4) the first composition is in position. A light transmissive substrate side is formed as a refractive index gradient layer simultaneous coating, can easily control the film thickness of the high-refractive index gradient refractive index of the HC layer direction in fine distribution. Therefore, when the method for producing an optical film of the present invention is used, an optical film having a gradient π layer with a refractive index can be easily obtained with high productivity. In the reduction plate and the image of the present invention, since the optical film having the refractive index inclined HC layer is provided, it is difficult to cause damage. [Embodiment] Hereinafter, the manufacturing method of the optical (four) of the present invention will be described first, and the optical film will be described next. In the present invention, (meth)acrylic acid S means glyceryl acetoate and/or methacrylic acid ester. Further, in the light of the present invention, not only electromagnetic waves of wavelengths in the visible light and non-visible light regions, but also electron beam-like particle lines and radioactive strands are collectively referred to as radiation or ionizing radiation. In the present invention, the average particle diameter of the microparticles means the average value of the particles (2) of the cross section of the cured film observed by a transmission electron microscope (TEM) photograph, and may be a primary particle diameter and a secondary particle size. Any of the particle sizes. That is, it is an average dispersed particle diameter of the entire particle group including the primary particle diameter and the secondary particle diameter. 099143668 12 201130658 In the present invention, the molecular weight, in the case of having a molecular weight distribution, means the weight average molecular weight of the polystyrene-converted value measured by gel permeation chromatography (GPC) using THF as a solvent, and has no molecular weight. In the case of distribution, • Think about the molecular weight of the compound itself. In the present invention, the term "hard coat layer" means a pencil hardness test (4.9 N load) prescribed in JIS K5600-5-4 (1999), and shows a hardness of "Η" or more. Further, in the definition of the film and the sheet in the definition of JIS-K6900, the sheet refers to a product which is thin and generally has a thickness which is small and flat in the ratio of length to width. The so-called film means that the thickness is extremely small compared to the length and the width. And the maximum thickness is an arbitrarily defined thin and flat product 'general example, in the form of a roll type. Therefore, even if the thickness of the sheet is extremely thin, it is called a film, and the boundary between the sheet and the film is not determined, and it is difficult to distinguish clearly. Therefore, in the present invention, the meaning of both the thick and the thin is included, and Defined as "film". The refractive index was measured by using a spectrophotometer (UV-3100PC manufactured by Shimadzu Corporation), and the average reflectance (R) at a wavelength of 38 〇 to 78 〇 nm was measured. From the obtained average reflectance (R), the value of the refractive index (8) was obtained using the following formula. R (%) = (l-n) / (1 + n2) - The measurement of the dry film thickness was carried out using (idf-130, manufactured by Mitsut® Co., Ltd.). (Method for Producing Optical Film) The method for producing an optical film of the present invention comprises (1) a step of preparing a light-transmitting substrate, (9) preparing a first binder component and a first solvent, and containing no high-refractive-index particles And the viscosity is 3~1 〇〇···························································· a solvent and a viscosity of mPa s - a step of curing the composition for the hard coat layer, and (4) a surface side of the light-transmitting substrate, from the side of the light-transmitting substrate, the first - the curable resin composition for a hard coat layer and the curable resin for the second hard coat layer are preferably adjacent to each other, and the first hard coat phase curable resin composition is more than the curable resin for the second hard coat layer The composition is coated on the side of the light-transmitting substrate at the same time to form a coating step, and (4) the step of curing the coating film obtained in the above step (10) to form a refractive index-slanted hard coat layer. The first composition which does not contain high refractive index fine particles, has a viscosity of 3 to 1 〇〇mPa.s, and the second composition which has a high refractive index fine particle containing an average particle #丨~刚nm, and a viscosity of HMO〇mPa.s When the first composition is applied simultaneously to the side of the light-transmitting substrate and hardened, the refractive index-inclined HC layer can be obtained with high productivity. In addition, the viscosity of the first composition and the second composition is determined by using the MCR3G measurement tool manufactured by ΑηωηΜ, pp5(), measuring the temperature as hunger, and cutting speed as the condition of the coffee maker. Ink) is measured in an appropriate amount and dripped onto the stage. When the viscosity of the first composition and the second composition is less than the above range, it is difficult to control the distribution of the high refractive index fine particles in the film thickness direction of the refractive index inclined HC layer in the gradient refractive index HC layer, and the high refractive index The microparticles are easily distributed evenly in the inclined HC layer at a refractive index of 099143668 14 201130658. When the high refractive index fine particles are uniformly distributed in the layer, the refractive index difference becomes large at the interface between the light-transmitting substrate adjacent to the refractive index-inclined HC layer and the antistatic layer. Thereafter, interference fringes are generated in the interface and the appearance of the optical film is deteriorated. Further, the content of the high refractive index fine particles increases, and the manufacturing cost also increases. Further, when the viscosity of the first composition and the second composition is less than the above range, the coating of the refractive index is inclined on the surface of the HC layer and the appearance is deteriorated. On the other hand, when the viscosity of the first composition and the second composition is within the above specific range, even if the two compositions are simultaneously coated, the diffusion or sedimentation of the high refractive index fine particles can be appropriately controlled, and the coating can be easily performed. The refractive index tilting HC layer is obtained with high productivity. The viscosity of the first composition and the second composition are 3 to 100 mPa · s and 10 to 100 mPa · s, respectively, and the viscosity of the first composition is preferably 3 to 50 mPa · s, more preferably 5 to 30 mPa · s. The viscosity of the second composition is preferably 10 to 50 mPa · s, more preferably 15 to 30 mPa · s. When the viscosity of the first composition and the second composition are adjusted to the above ranges, respectively, the diffusion or sedimentation of the high refractive index fine particles can be easily controlled, and the refractive index inclined HC layer can be easily formed. Further, the viscosity of the first composition is 5 to 30 mPa·s, and the viscosity of the second composition is 20 to 30 mPa·s, which makes it easier to control the diffusion or sedimentation of the high refractive index fine particles, and is easy to form the refractive index tilt HC. Layer, so it is better. 099143668 15 201130658 If the viscosity of the second and second compositions is within the above range, it may be appropriately adjusted according to the distribution of the desired re-folded fine particles, but hardened and becomes the upper side of the gradient refraction layer. The viscosity of the two compositions is greater than that of the first composition, and is preferable in terms of productivity. Further, the absolute value of the difference between the viscosity (mPa·s) of the first composition and the second composition is 30 or less', the diffusion or sedimentation of the high refractive index fine particles can be more easily controlled, and the gradient of the refractive index is easily formed. Therefore, it is better. Fig. 1 is a view schematically showing an example of a method for producing an optical film of the present invention. As shown in Fig. 1 (a), a light-transmitting substrate 1 准备 was prepared. Next, on the light-transmitting substrate 1G, the first composition and the fourth product are coated adjacent to each other on the light-transmitting substrate 1Q side, and coated at the same time to form a coating. The film is cured by light irradiation, as shown in Fig. 1(b), the less the amount of the partial refractive index recording in the layer is closer to the light-transmitting wire, and the refractive index oblique hard coat layer is formed. 20, obtaining an optical film j. Hereinafter, the light-transmitting substrate, the first composition and the second composition used in the method for producing an optical film of the present invention will be described. (Light-transmitting substrate) If the light-transmitting substrate of the present invention satisfies the physical properties of the light-transmitting substrate which is an optical film, Shilongding can appropriately select and use a previously known hard coating. Triacetyl cellulose (tac), polyethylene terephthalate (PET), or cyclic olefin polymer (COP) used for the film and optical enamel. The average light penetration of the translucent substrate in the visible light region of 380 to 78 Gnm is preferably 099143668, 201130658, preferably 50% or more, more preferably more than 85%. In addition, the measurement of the light transmittance can be carried out by using an ultraviolet-visible spectrophotometer (for example, UV-3100PC manufactured by Shimadzu Corporation), and used for measurement in a room or atmosphere. Further, the light-transmitting substrate may be subjected to an alkalizing treatment and a surface treatment such as providing a primer layer. Further, an additive such as an antistatic agent may be contained in the light-transmitting substrate. The thickness of the light-transmitting substrate is not particularly limited, and is usually 2 〇 to 3 〇〇 左 ’ 〜 〜 40 〇〇 较佳 ι ι ι In the case where the light-transmitting substrate is a TAC substrate, the method of forming a sink layer containing high-refractive-index fine particles in the first step is used in a single-layer method. Even if the solvent and the binder component contained in the composition are impregnated into the TAC substrate, the high-refractive-index fine particles are uniformly distributed in the HC layer', and the interface on the tac substrate side of the HC layer and its vicinity are also likely to exist. In this interface, the interference fringes occur and the appearance is deteriorated via the tac substrate (refractive index Μ州 and high refractive index fine particles (refractive index: 15 () ~ 2 refractive index difference. '(4) Earth' according to the present invention In the method for producing an optical film, the refractive index is inclined to the layer, and in the film thickness direction of the refractive index tilting *HC layer, the amount of the high refractive index 2 particles (particle density per unit volume) is closer to light penetration. Sexuality = less side 'and at the interface between the refracting oblique HC layer and the light penetrating wire, there is no or high refractive index microparticles in the attachment. Therefore, even if the 099143668 17 201130658 TAC substrate is used, the first solvent And the first binder component is easily saturated with the TAC substrate' An optical film which can obtain a good appearance without interfering with the stripe at the interface between the refractive index-inclined HC layer and the TAC substrate. (The curable resin composition for the first hard coat layer) is used in the method for producing an optical film of the present invention. The first composition contains the first binder component and the first solvent, and does not contain high refractive index microparticles, and has a viscosity of 3 to 1 〇〇 mPa · s. The first composition is more transparent than the second composition described later. The substrate is adjacent and coated at the same time. The first composition having the refractive index microparticles is coated at the same time as the second composition containing the high refractive index microparticles on the side of the light transmissive substrate. The refractive index of the two kinds of and the formed object is inclined in the HC layer, and the refractive index is inclined in the film thickness direction of the HC layer, and the higher the refractive index fine particles are closer to the light-transmitting substrate side, the more the When the first composition and the second composition are simultaneously coated, the first composition and the second composition are formed into a film in an integrated manner, and the second composition is applied to the second composition separately and hardened. High refractive index micro In the integrated film, the distribution is less moderately closer to the side of the light-transmitting substrate. Thereby, the first composition is inhibited via the light-transmitting substrate side interface of the refractive index-inclined HC layer. The difference in refractive index between the high refractive index fine particles and the lower layer such as the light-transmitting substrate or the antistatic layer causes interference fringes to prevent deterioration of the appearance of the optical film. Hereinafter, the first bonding included in the first composition will be described. The component and the first solvent and, if necessary, other photopolymerization initiators, viscosity-increasing 099143668 201130658 agent, microparticles, antistatic agent and leveling agent. (First binder component) First binder component The first binder component is, for example, a reactive adhesive component which is cured by induction light (hereinafter referred to simply as "photocurable binder component"), ( 11) Reactive adhesive components that are hardened by induction heat (hereinafter referred to as "thermosetting adhesive components") and (iii) non-reactive adhesives that are cured by drying or cooling without sensing light and heat. Mixture ingredients. Further, the 'photocurable adhesive component and the thermosetting adhesive component' may also be light and heat-curable adhesive components which are resistant to light and heat. In the photocurable adhesive component, a binder component which is cured by ionizing radiation (hereinafter referred to as "ionizing radiation curable adhesive component") can be prepared, and a coating composition excellent in coating suitability can be prepared. A uniform large-area coating film is formed. Further, the binder component which is cured by ionizing radiation in the coating film is cured by photopolymerization after coating, and a cured film having high strength can be obtained. As the ionizing radiation curable adhesive component, a monomer, oligomer or polymer having a polymerizable functional group which is previously known to cause polymerization or the like by ionizing radiation can be used. The polymerizable functional group is preferably, for example, an ethylenically unsaturated bond such as an acrylonitrile group, a vinyl group or an allyl group. The polymerizable functional group may further be an epoxy group. The component of the ionizing radiation-curable adhesive is preferably a binder component having two or more polymerizable functional groups in one molecule from the viewpoint of increasing the crosslinking of the binder at the time of curing to 099143668 19 201130658. Examples of the ionizing radiation-curable adhesive component include monofunctional (fluorenyl) acrylate, di(indenyl) acrylate, and tri(indenyl) acrylate described in JP-A-2004-300210. a derivative such as a polyfunctional (fluorenyl) acrylate and such an EO (ethylene oxide) modified product, an oligomer which polymerizes the radical polymerizable monomer, a polymer having an ethylenically unsaturated bond, or the like . Further, a photocationic polymerizable monomer and an oligomer such as a compound containing an epoxy group can also be used. The thermosetting adhesive component may, for example, be a compound having an epoxy group and a binder epoxy compound described in JP-A-2006-106503. Examples of the non-reactive adhesive component include polyacrylic acid, polyimine, and polyvinyl alcohol described in JP-A-2004-300210. The binder component of the above (〇~(iii) may be used alone or in combination of two or more. (First solvent) The first solvent has a viscosity for adjusting the first composition and imparts a first composition. The first solvent is not particularly limited, and it can be appropriately selected and used according to the light-transmitting substrate to be used. 099143668 201130658 The first solvent is exemplified by, for example, JP-A-2005-316428. Alcohols, ketones, esters, hydrocarbons, aromatic hydrocarbons, ethers, etc. As the first solvent, for example, tetrahydrofuran, 1,4-dioxane, dioxane and An ether or the like such as diisopropyl ether. In order to prevent the occurrence of interference fringes, it is preferred to use a solvent (permeability solvent) having a permeability to the light-transmitting substrate. The penetrating solvent may be used in combination with a non-permeating solvent. In the present invention, the so-called permeability, in addition to the property of impregnation of the light-transmitting substrate, β卩, narrowly defined permeability, includes the concept of swelling or wetting the light-transmitting substrate. Specific examples of the solvent for permeation include alcohols such as isopropyl alcohol, decyl alcohol and ethanol, ketones such as methyl ethyl ketone, decyl isobutyl ketone and cyclohexanone, decyl acetate and ethyl acetate. Esters such as esters and butyl acetate, aromatic hydrocarbons such as i-hydrocarbons, toluene and diphenylbenzene, and phenols. The solvent used for the case where the light-transmitting substrate is triacetyl cellulose (TAC) and the solvent used for the case where the light-transmitting substrate is polyethylene terephthalate (PET) can be enumerated. The solvent described in Japanese Laid-Open Patent Publication No. 2005-316428. Particularly, the light-transmitting substrate is a solvent used in the case of triethyl fluorene cellulose (TAC), and is preferably decyl acetate, ethyl acetate, butyl acetate or mercaptoethyl ketone. 099143668 21 201130658 The solvent used for the polyethylene pentaphthalic acid (PET) is a secret, gas, benzene, gas and 4 isopropyl alcohol. Further, in addition to the impregnation property, the solvent of the above surface has the effect that the first composition can be easily and uniformly coated on the surface of the light-transmitting substrate, and the evaporation rate of the solvent after coating is moderate, and it is difficult to cause unevenness in drying. . Therefore, a large-area coating film having a thickness of a haiku can be easily obtained. The first solvent may be used alone or in combination of two or more. When the impregnating solvent and the non-permeating solvent are used in combination as the first solvent, the ratio of the penetrating solvent is preferably % by mass to the total mass of the first solvent, and more preferably 80% by mass or more. (Other components of the first composition) In the first composition, in order to promote the hardening of the first-adhesion lyse, the hardness, the hardness, or the antistatic property, etc., in the range not exceeding the gist of the present invention, It may contain other components such as a photopolymerization initiator, a tackifier, fine particles, an antistatic agent, and a leveling agent. (Photopolymerization initiator) As the photopolymerization initiator, for example, a light-emitting agent such as an acetophenone or a diphenyl hydrazine described in JP-A-2007-272132 can be used. Among them, 1-trans-cyclo-cycloethyl-phenyl ketone and fluorenyl, _(methylthio) phenyl]-2-indolyl propane oxime ketone, even a small amount can start and promote photopolymerization 099143668 22 201130658 It is preferred to use it in the present invention. In the case of using a photo-cationic polymerizable binder component, a cationic polymerization initiator described in JP-A-2010-107823 can be used as needed. The photopolymerization initiator may be used alone or in combination of two or more. A commercially available product can also be used as the above photopolymerization initiator. For example, 1-hydroxy-cyclohexyl-phenylindole is commercially available from Ciba Specialty Chemicals under the trade name of 1RGACURE 184. The photopolymerization initiator may be used alone or in combination of two or more. When the photopolymerization initiator is used, the content thereof is preferably 0.1 to 20% by mass based on the total solid content of the first composition. (Tackifier) The first composition may contain a tackifier for an organic compound and/or an inorganic compound for the purpose of adjusting the viscosity. By containing the tackifier, the mixing of the first composition and the second composition can be appropriately controlled, and the distribution of the south refractive index fine particles contained in the second composition can be easily controlled. Examples of the tackifier of the organic compound include ethyl cellulose, hydroxypropyl cellulose, acrylic resin, fatty acid guanamine wax, oxidized polyethylene, high molecular weight amine salt, and linear polyamine hydrazine. Amine and macromolecular acid salt, polyglycolic acid decylamine solution, alkyl sulfonate, alkyl allylate sulfonate, gum system ester, 099143668 23 201130658 polyester resin, phenol resin, melamine resin , epoxy resin, amino phthalate resin and polyimide resin, and the pulverizer. Examples of the tackifier of the inorganic compound include calcium stearate, zinc stearate, aluminum stearate, aluminum oxide, zinc oxide, magnesium oxide, glass, diatomaceous earth, titanium oxide, zirconium oxide, and the like. Cerium oxide, talc, mica, feldspar, kaolinite (kaolin clay), phylloxite (waxite clay), sericite, bentonite bentonite, insect to stone (like stone, stone, stone, and soap) Stone, etc.), organic bentonite and organic montmorillonite. Commercially available products can also be used as the tackifier. A commercially available product as a bulking agent for organic compounds can be listed, for example, by SELNY-HPC-H, HPC-M, HPC-L, HPC-SL, and HPC-SSL, manufactured by Sakamoto Soda Co., Ltd., Mitsubishi Rayon. DIYANAL BR series (shared), Dispal〇ne #6900-20X, Dispalone #4200, Dispalone KS-873N and Dispalone #1850, BYK-405 and BYK-410 manufactured by BYK Chem Japan , Primal RW-12W manufactured by Rhom & Haas, AS-AT-20S, AS-AT-350F, AS-AD-10A and AS-AD-160 manufactured by Ito Oil Co., Ltd. As a commercial product of the tackifier of an inorganic compound, for example, Crown Clay, Bages Clay #60, Bages Clay KF, and Optiwhite of White Rock Industries Co., Ltd., Kaolin JP-100, NN by Kato Kaolin Industries Co., Ltd. Kaolin Clay, ST Kaolin Clay and Hardsn, Enjel Hard (ASP), Satenton Plus, TRANSLINK 37 and Highdrasdelami 099143668 24 201130658 NCD, SYKaolin, OS CLAY, HACLAY and MC HARD CLAY, Rusentite _ SWN, Rusentite SAN, Rusentite STN, Rusentite SEN and Rusentite SPN manufactured by Copchemical, Smecton manufactured by Cunimina Industries, Benge BW, S Ben, S Ben 74, Oruganite and Omganite T, manufactured by Hojun Co., Ltd. Sapphire, 01uben, 25〇M, Benton 34 and Bent〇n38 made by Wilba Elis, Laponite, Laponite RD and Laponite RDS made by Japan Silica Industries. A preferred tackifier from the viewpoint of transparency is a tackifier of the above organic compound, and propylcellulose or a propionate resin is also preferred. One type of the above-mentioned tackifier may be used alone or two or more types may be used in combination. When the tackifier is used, the content thereof is preferably 0.1 to 10% by mass based on the total solid content of the first composition. Further, a tackifier may be contained in the second composition described later. At this time, the tackifiers of the first composition and the second composition may be the same and may be different. (Microparticles) π Microparticles are used for the purpose of increasing the hardness of the refractive index tilting Hc layer. Examples of such fine particles for improving hardness include, for example, dioxo-particles having a reactive functional group on the surface described in Patent Document 丄. When the fine particles imparting hardness are used, it is preferable to use 5 to 80% by mass of the first adhesive agent/knife mass in the Jin camera i Du _ 〃3. (Antistatic agent) 099143668 25 201130658 Antistatic agent' is a component that imparts antistatic properties to a refractive index inclined HC layer. The antistatic agent is not particularly limited, and a conventionally known one can be used. Examples of the antistatic agent include an anionic antistatic agent, a cationic antistatic agent, an amphoteric antistatic agent, a nonionic antistatic agent, an electrolyte, and an ionic liquid described in Patent Document 3. The content of the antistatic agent is not particularly limited, and may be appropriately adjusted and used. For example, if the refractive index is inclined, the surface resistivity of the HC layer is 1〇χ1〇ΐ3β/□ or less, preferably 1·〇χ1〇 Ω/□ or less, and it is better! 〇χ1〇9β/□ is more preferable, and l.GxlOh/□ or less is particularly preferable, so that the surface resistivity of the gradient refractive index Hc layer can be used in this range. (Leveling Agent) The leveling agent' has an effect of imparting coatability and/or smoothness to the surface of the coating layer when the refractive index is inclined. / As the leveling agent, a leveling agent such as fluorine-based, polyfluorene-based or acrylic-based which is conventionally used for the antireflection film can be used. For example, a leveling agent which does not have an ionizing radiation curable group, such as a DIC (product) Megafac series (MCF350·5), and a leveling agent having an ionizing radiation curable group such as Χ22_ι63Α manufactured by Shin-Etsu Chemical Co., Ltd. Either can be used. When the leveling agent is used, the content thereof is preferably 5.0% by mass or less based on the mass of the first binder component, and more preferably 0 to 3% by mass. The first composition 'usually, the first binder component and the photopolymerization initiation solution are used in the first solvent, and the components are used arbitrarily, and mixed according to the general modulation method, and 099143668

S 26 201130658 A paint disperser or bead can be used and the dispersion treatment can be modulated. For mixing and dispersion, grain grinding, etc. The second composition described later can also be prepared in the same manner. (Curable resin composition for second hard coat layer) Production of optical film of the present invention A second binder component and a composition having a high refractive index of an average particle diameter contain a solvent and have a viscosity of HM (9) mpa.s. Next, the first plant side is adjacent to each other and the resultant material is coated with the wire material than the second (four) material. The second composition also has an effect of efficiently increasing the refractive index by obliquely tilting the refractive index of the layer to the surface of the light-transmitting substrate and the vicinity thereof. Thereby, as shown in FIG. 4, a low refractive index layer is provided on the opposite side surface (on the refractive index inclined HC layer) of the light-transmitting substrate of the refractive index-inclined HC layer, and, as shown in FIG. In the refractive index-inclined HC layer, the high refractive index layer and the low refractive index layer are provided from the side of the refractive index inclined HC layer, whereby the antireflection property of the optical film can be further improved. The following describes the high refractive index microparticles, the second binder component, and the second solvent contained in the second composition, and other photopolymerization initiators, tackifiers, microparticles, and antistatic agents which may be contained as needed. Leveling agent. (High refractive index fine particles) The high refractive index fine particles contained in the second composition of the present invention have an average particle diameter of 1 to 10 nm. 099143668 27 ZU11JUOD6 The flatness of the high-refractive-index fine particles is the same as that of the flat-grained particles of the high-refractive-index fine particles from the viewpoint of transparency. The following is preferable, and it is more preferable to use 2 plus 4, and it is the following # from the viewpoint of transparency. The first component of the film is made of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ dispersion. The high-refractive-index microparticles contained in the product are observed on the average particle size of the high-refractive-index microparticles (refractive two: meaning = average value of the electron microscope, if A丨1ΛΛ is only inclined to the HC layer) The particle 2 is right von 1~lOOnm, and it can be used. • Any of the human granules and the secondary particle size. High refractive index _ sub-axis and needle-like substances. It is possible to use a spherical shape or a chain shape as a high refractive index fine particle, and it is possible to use a high refractive index fine particle which is not particularly limited as long as it has a refractive index of (10) to 2.80. As the above-mentioned inter-refractive-index fine particles, gold is a metal oxide 1 minus dice. For example, titanium oxide (Tl〇2, refractive index·· 2 71) J oxidation error (Zr〇2, refractive index: 2.1〇), cerium oxide (Ce02, refractive index) ·· 2 2〇), tin oxide (Sn〇2, refractive index: 2.00), tin oxide (ΑΤΟ, refractive index. 彳7 〇<, 羊羊.]·75~h95), indium tin oxidation _, , ... 1.95~2.00), phosphorus tin compound (ρτ〇, refractive index m), 099143668

S 28 201130658 yttrium oxide (Sb2〇5, refractive index: 2·04), zinc oxide (Az〇, refractive index: 1.90~2.00), gallium zinc oxide (〇2〇, refractive index: 1.90~2.00) And 锑 _ zinc (21 ^ 1? 206, refractive index: 1.9 〇 ~ 2. 〇〇) and so on. : the above metal oxide fine particles are also tin oxide (Sn〇2), antimony tin oxide (ΑΤΟ), indium tin oxide (IT〇), phosphorus tin compound (ρτ〇), yttrium oxide (sb2〇5), Aluminum zinc oxide (ΑΖ0), gallium zinc oxide (GZ〇) and zinc antimonate (ZnSb2〇6) are conductive metal oxides, which control the diffusion of particles to form conductive channels and provide antistatic The advantage of sex. In the method for producing an optical film of the present invention, the high refractive index layer or the high refractive index layer disposed on the opposite side surface of the light transmissive substrate of the refractive index tilting layer is selected or adjusted to be high in the second composition. The type and content of the refractive index fine particles may be adjusted by adjusting the refractive index of the HC layer. Specifically, for example, when the low refractive index layer is provided on the opposite side of the light-transmitting substrate of the refractive index-slanted Hc layer, the refractive index of the refractive index-inclination HC layer is preferably 1.50 to 2.80. When the refractive index is inclined on the opposite side of the light-transmitting substrate of the HC layer, when the high-refractive-index layer and the low-refractive-index layer are disposed from the side of the refractive index-inclined HC layer, the refractive index of the refractive index is higher than that of the high refractive index The layer is lower and higher than the low refractive index. At this time, for example, the refractive index of the refractive index tilting HC layer may be 15 Å. Further, the refractive index of the refractive index is inclined by the refractive index of the HC layer, which means the refractive index of the opposite side interface of the light-transmitting substrate of the layer. The high-refractive-index fine particles contained in the first composition may be used in a single particle size, shape, refractive index, or material, and may be used in combination of two or more kinds. (Second binder component) The second binder component is a component which hardens into a matrix of the refractive index tilting Hc layer. The second binder component can be listed using the first binder component. In addition, a high refractive index of a resin containing an aromatic ring described in Patent Document 3, a resin containing a halogen element such as chlorine, bromine or iodine other than fluorine, and a resin containing an atom such as a sulfur atom, a nitrogen atom or a ruthenium atom may be used. Adhesive ingredients. The first binder component and the second binder component may be the same and may be different. The second binder component may be used alone or in combination of two or more. (Second solvent) The second solvent can be used as described for the first solvent. The first solvent and the second solvent may be the same and may also be different. The second solvent may be used alone or in combination with two cores (other components of the second composition) in the second composition, and the second binder component may be out of the scope of the present invention without departing from the gist of the present invention. Hardening, thief hardness or anti-static: etc.: Promote $ can contain photopolymerizing silk agent, increase _, fine particles, side-by-side thunder;; antifouling agent and even coating agent and other ingredients. The agent of the above-mentioned first composition can be used as the photopolymerization initiator, the tackifier and the antistatic agent which may be contained in the first article. - The photopolymerization initiator, tackifier and antistatic agent contained in the first and first compositions may be the same or different. (Microparticles) For the purpose of increasing the hardness of the refractive index and tilting the Hc layer, the fine particles contained in the second composition may be silica oxide (Si〇2) or oxidized (Al2〇3). (Dispersant) A dispersant can also be used in order to control the dispersibility of the south refractive index fine particles. As the dispersing agent, for example, Βγκ Chem described in Patent Document 3 can be cited.

A dispersing agent having an anionic polar group such as the Disperbyk series manufactured by Japan. (Antifouling agent) The antifouling agent can further impart scratch resistance to the refractive index inclined HC layer in order to prevent contamination of the outermost surface of the optical film. As the antifouling agent, a conventionally known antifouling agent (antifouling agent) such as a fluorine compound or a lanthanide compound can also be used. The antifouling agent described in Japanese Laid-Open Patent Publication No. 2007-264279 is exemplified as the antifouling agent. It is also preferable to use an antifouling agent of a commercial product. The antifouling agent (non-reactive) of such a commercially available product is a Megafac series manufactured by DIC Co., Ltd., and, for example, trade names MCF350-5, F445, F455, F178, F470, F475, F479, F477, 099143668 31 201130658 TSF series made by Toshiba Silicon Co., Ltd., such as TF1025, F478 and F178K, X-22 series and KF series manufactured by Shin-Etsu Chemical Co., Ltd., and Sailar Plane series manufactured by Thiso Co., Ltd. As an antifouling agent (reactivity) of a commercial product, the brand name of the brand name SUA 1900 L10, the brand name SUA 1900L6, and the name of Eacryl 350 manufactured by Diacel UCB, which are manufactured by Shinkansen Chemical Industry Co., Ltd., and the trade name are listed. Ebecryll360 and trade name KRM7039, UT3971, manufactured by Sakamoto Synthetic Chemical Co., Ltd., trade name Difenser TF3001, trade name DifenserTF3000, and trade name Difenser TF3028, manufactured by Kyoritsu Chemical Co., Ltd., under the trade name Light Procoat AFC3 〇00, Shin-Etsu Chemical Co., Ltd. under the trade name KNS53〇〇, GE Toshiba Silicone Co., Ltd. under the trade names UVHC1105 and UVHC8550, and Pa本Paint (trademark) under the trade name ACS-in2. (Leveling Agent) As the leveling agent used for the second composition, those enumerated as the above first composition can be used. When the leveling agent is used, the content thereof is preferably 5% by mass or less based on the mass of the second binder component, and more preferably from G) to 3.0% by mass. In the method for producing an optical film of the present invention, after the step (iv), the step (v) may be further carried out on the refractive index oblique hard coat layer, or directly or via a high refractive index layer. The step of the refractive index layer. Such a laminated low refractive index layer can further improve the antireflection property of the optical film. 0 099143668

S 32 201130658 A layer having a higher refractive index than a gradient refractive index HC layer of a high refractive index layer is disposed between the gradient refractive index HC layer and the low refractive index layer, and has an effect of further improving the antireflection property of the optical film. The high refractive index layer ' can be made into a high refractive index layer used in the previously known antireflection film. For example, a composition containing a high refractive index fine particle, a binder component, and a solvent exemplified by the above-described refractive index inclined HC layer can be used. The refractive index of the refractive index layer may be higher than the refractive index inclined Hc layer provided on the light transmissive substrate side of the high refractive index layer. Further, in the above-mentioned refractive index fine particles, antistatic properties can be imparted by using a conductive metal oxide. The film thickness of the same refractive index layer of 10 to 300 nm is preferably. If properly set, for example, (low-refractive-index layer) low-refractive-index layer, 彳._^°°, the effect of the light-transmitting substrate on the refractive index-inclined HC layer or the high-refractive-index layer, The side 'has improved the optical film's anti-reflection low-refractive-index layer's irradiance rate'. The right-ratio refractive index is inclined to the HC layer and the high refractive index is increased. 丨 _ . ' ° ' i.49 or less is preferable. It is more preferably 1.47 or less, and is preferably "2 or less. The low refractive index layer can be appropriately set to the right, for example, 10 to 300 nm is preferably 0 099143668 33 201130658 The low refractive index layer can be used except for bonding. In addition to the solvent component and the solvent, a composition of a low refractive index material such as a low refractive index fine particle or a low refractive index resin (hereinafter referred to as a "component for a low refractive index layer") is formed. As the binder component and the solvent, a binder component other than the high-refractive-index tentacles and high-refractive-index binders listed in the above-mentioned refractive index gradient layer and a solvent can be used. As a low refractive index microparticle, use the patent literature! The fine particles (hollow fine particles) having a void and the metal fluoride described above are preferred. The material having the voided fine particles is preferably a nitric oxide or a fluororesin for reducing the refractive index of the low refractive index layer. The average particle size of the fine particles having a void is preferably 5 to 80, and preferably 10 to 80 nm. As the metal hydride, a conventionally known low refractive index material can be used, for example, 'LiF (refractive index i 4), postal town, refractive index 1.4), return, 3 (refractive index M), A1F3 can be used. (Refractive index bucket (10) slaked cryolite, refractive index, and NaMgF3 (refractive index 丨 36). Examples of the low refractive index resin include a curable gas resin. Examples of the curable gas resin include photocurable groups. And the fluororesin of the thermosetting group. Examples of the photocurable group include, for example, an isopropyl group, a vinyl group, a benzyl group, and the like, and a base such as the above-mentioned first binder component. The polymerizable functional group. The hydroxyl group, the carboxyl group, the amine group, and the epoxy group are thermosetting groups, and examples thereof include, for example, 099143668 34 201130658, a glycidyl group, an isocyanate group, and an anthracene group. Examples of the curable fluororesin of the base include vinyl fluoride, vinylidene fluoride, tetrafluoroethylene, hexafluoroethylene, perfluorobutadiene, and perfluoro-2,2-dimethyl-1,3-dicarbazole. A fluoroolefin which can be used as a photocurable group, and a fluoroolefin. 2,2,2-trifluoroethyl acrylate, 2,2,3,3,3-pentafluoropropionyl (meth)acrylate, 2-(peryl butyl) (Ethylene, (mercapto) acrylic acid 2_(all gas hexyl) ethyl vinegar, (mercapto)acrylic acid 2-(perfluorooctyl)ethyl ester, (methyl) propyl benzoic acid 2-(perfluorodecyl) a (fluorenyl) acrylate compound such as ethyl ester, α-trifluorodecyl decyl acrylate, or trifluorodecyl acrylate, or a fluorowire having at least 3 I atoms having a carbon number of 1 to 14 in a fluorene molecule. a gas-based Wei-wei-extension base, a fluorine-containing polyfunctional (fluorenyl) acrylate compound having at least two (meth) acryloxy groups, etc. As a hardenable fluororesin having a thermosetting group, it can be used. For example, 4-fluorovinyl-perfluoroalkyl vinyl ether copolymer, fluoroethylene-hydrocarbon-based vinyl ether copolymer and % oxygen resin, polyamine phthalate resin, cellulose resin, phenol resin, and polyaniline resin In addition, a polymer or a copolymer of a polymerizable compound containing a gas atom described in JP-A-2010-122603 may be used. And the above-mentioned low refractive index material may be used alone or in combination of two or more. 099143668 35 201130658 If the content of the low refractive index fine particles is appropriately adjusted, The total mass of the binder component and the low refractive index fine particles of the composition for the low refractive index layer is preferably from 50 to 90% by mass, and more preferably from 55 to 70% by mass. When the curable fluororesin is used, the content thereof is The total solid content of the composition for the low refractive index layer is preferably from 5 to 95% by mass, and more preferably from 25 to 60% by mass, based on the total adjustment of the optical film of the present invention. In the embodiment, the composition for the low refractive index layer of the low refractive index layer is hardened to form hollow hollow cerium oxide fine particles. Thereby, there is an advantage that an optical film having more excellent antireflection properties can be obtained. In the optical film obtained by the method for producing an optical film of the present invention, as will be described later, in the gradient-inclined HC layer, in the film thickness direction of the refractive index tilt Hc layer, the presence of the high refractive index fine particles is closer to the light penetration. The less the side of the substrate. That is, in the gradient refractive index HC layer, in the film thickness direction in which the refractive index is inclined, the closer to the low refractive index layer side interface, the more the high refractive index microparticles are present, so the refractive index is inclined to the low refractive index of the HC layer. The refractive index at the interface on the side of the rate layer and the vicinity thereof are formed by successively coating the HC layer containing the same content of high refractive index fine particles in the same film, and in a single layer! In the case where the secondary coating method is formed, it is more efficient. Therefore, the low refractive index layer formed by hardening the low refractive index layer containing the hollow silica fine particles is formed on the refractive index inclined HC layer, thereby increasing the low refractive index of the gradient inclined HC layer. The interface portion on the layer side is inferior to the refractive index of the low refractive index layer of 099143668 36 201130658, and an optical film having excellent antireflection properties is obtained. In another preferred embodiment of the method for producing an optical film of the present invention, the composition for forming the low refractive index layer of the low refractive index layer is selected to contain at least a group consisting of a metal fluoride and a curable fluororesin. A low refractive index material. In the case where the composition for a low refractive index layer contains a fluorine-based low refractive index material as a low refractive index material, there is an advantage that an optical film having sufficient antireflection properties can be obtained. A fluorine-based low refractive index material such as a metal vapor and a curable fluororesin has a lower refractive index than a hollow dioxoparticle because the refractive index is low. . The optical film composed of the layer of the low refractive index layer/high refractive index layer (high refractive index hc layer)/substrate formed by the previous sequential coating and the single layer i coating is as high as the non-efficiency The refractive index layer (high refractive index HC layer) has a low refractive index layer side interface and a refractive index in the vicinity thereof, so if the composition of the low refractive index layer is formed, the above (4) low refractive index material is taken as == shot ^ 2:: "layer" of the low refractive index layer side boundary* and the material layer of the base layer of the layer in the vicinity thereof, "pay-phase=', such as the above-described preferred method of manufacturing the optical method according to the present invention The description can be made to increase the refractive index of the low refractive index surface of the refractive index tilt 及其 and its vicinity, and can also suppress the occurrence of interference fringes 099143668 37 201130658, even if the low refractive index layer composition uses gas system low refraction The rate material can also obtain an optical film having sufficient antireflection properties. In another preferred embodiment of the method for producing an optical film of the present invention, the composition for forming a low refractive index layer of the low refractive index layer is cured, does not contain hollow silica fine particles, and contains a metal vapor and At least one type of low refractive specific material in the group consisting of hardenable gas resins. When the composition for a low refractive index layer has no hollow dioxygen fine particles and contains a fluorine-based low refractive index material as a low refractive index material, it is possible to establish sufficient phase between the antireflection property and the test resistance. advantage. When a polarizing plate is bonded to the optical film on one side of the polarizing element, the second pre-bonding film is immersed in the test solution, and the substrate side surface of the optical film is hydrophilized (hereinafter, referred to as "inspection" The outermost layer of the film is filled with dioxins. The first layer of the cerium oxide is oxidized by the cerium. The cerium is oxidized by the outermost layer and has an easy flow or The nature of the solution dissolved in the test solution. = The surface has a low refractor containing hollow dioxide particles = the case of the test treatment. If the ruthenium dioxide is oxidized and detached, the content of the hollow SiO2 particles is reduced. The refractive index of the refractive index layer is increased, and the lower one is incapable of taking the anti-reflective property required for the eclipse--the cerium oxide microparticles in the test solution. Mu solution' then 099143668 In the past, the inspection of the optical film with low chemical purity was carried out at ►143668 38 201130658 containing the outermost layer of the dioxide fine particles (hollow dioxins) The rate layer __ 赖, will be the most surface layer '理继液仏. However, in the method of removing the protective thin 臈 after the affixing (10) == :, the cost of the township and the protective film plus, and The manufacturing cost of the optical thin film is increased. The cost of film-forming is increased relatively. 'If the above-mentioned preferred method of manufacturing the optical solid-free n L film according to the present invention is as described above, the refractive index tilt can be improved efficiently. Η. The layer === the refractive index of the surface and its vicinity, so the oxidized low refractive index material is thinned by the low refractive index layer and the fluorine-based low refractive index material is thin. #Antireflection and testability The established optical does not cause the optical film of the preferred embodiment to be alkalized, and it is not necessary to protect the film, and the number of steps and the manufacturing cost are reduced. In the low refractive index layer, It can also contain photopolymerization initiators and anti-slips on the right μ, +, + 4. The refractive index is inclined. The low refractive index layer and the high refractive layer (four) layer listed in the layer are as described above. If the composition of the solvent is the same as that of the hard coat layer, the H layer and the high refractive index layer may be replaced by true. ... rvn is formed by true i vapor deposition, sputtering, plasma vapor phase method (or dry coating method). Between the steps of the optical thin film of the present invention, it is also possible to further include two methods; (1) Step and (4) 3 (V1) A step of forming an antistatic layer on the surface of the above-mentioned light-transmitting substrate by setting the refractive index to the hard coat layer. 099143668 39 201130658 Setting an antistatic layer can be further improved The antistatic property of the film. The antistatic layer can be prepared by using an antistatic agent containing anti-survival formation, f胄, binder component and solvent, and the refractive index can be slanted to the HC layer. __ content, relative to formation The binder component of the composition of the antistatic layer is preferably used in an amount of 50 to 400% by mass. The binder component and the solvent contained in the composition forming the antistatic layer are the binder components exemplified by the gradient refractive index HC layer and Solvent. The manufacturer of the optical film of the present invention In the case of preventing the reflection of the optical film from damaging the optical film, it may be included in the outermost surface of the optical film having the gradient of the refractive index of the HC layer (the opposite side of the light-transmissive substrate of the optical film), and further providing an antifouling layer. When an antifouling layer is provided on the outermost surface, it is possible to impart antifouling properties to the optical film, etc. It is possible to prevent the formation of 5 layers by using an antifouling agent, a binder component, and a solvent. As the stain, the leveling agent and the antifouling agent exemplified by the above-mentioned refractive index inclined HC layer can be used. The content of the antifouling agent can be appropriately adjusted according to the required properties. The binder component contained in the composition forming the antifouling layer and As the solvent, a binder component and a solvent other than the high refractive index binders exemplified above for the gradient refractive index HC layer can be used. 099143668 201130658 The film thickness of the antifouling layer may be appropriately set, for example, 10 to 300 nm is preferable. In the step (iii) of the method for producing an optical film of the present invention, the method of simultaneously coating the first composition and the second composition is not particularly limited, and a previously known simultaneous coating method can be used. The simultaneous coating method may, for example, be a die coating or a sliding coating having two or more slits (discharge ports). Fig. 2 is a schematic view showing an example of a simultaneous coating method using an extrusion type die coater. The curable resin composition 60 for the first hard coat layer and the curable resin composition for the second hard coat layer are respectively formed on the light-transmitting substrate 10 by the slits 51 and 52 of the die coater head portion 40. In the case of the light-permeable substrate, the coating film 61 and the second coating of the curable resin composition for the first hard coat layer are formed adjacent to each other and applied at the same time as the curable resin composition 60 for the first hard coat layer. A coating film 71 of a curable resin composition for a hard coat layer. In addition, in FIG. 2, the first hard coat layer curable resin composition and the second hard coat layer curable resin composition are integrally formed into one hard coat layer, but the two compositions are conveniently described. It is separated from the color of the coating film. Further, the wet film thickness of the first composition and the second composition at the time of coating may be appropriately adjusted according to the required properties. When the wet film thickness of the first composition is set to T1 and the wet film thickness of the coating film of the second composition is T2, T2/T1 (ie, T2+T1) is 0.01 to 1, and the refractive index is inclined to the HC layer. In the film thickness direction, the surface of the light-transmitting substrate is opposite to the surface of the substrate until the fold is 099143668 41 201130658 = the rate is inclined to the surface of the Hc layer. In the area, the total amount of the refractive index fine particles is distributed in the south microparticles, and the high refractive index is controlled by the efficiency. The wet film thickness can be determined from the discharge amount of the object to be coated. Transfer speed, area, and composition In the step (iv) of the method for producing an optical web of the present invention, light is irradiated with a main material, an external line, a visible light, an electron beam, or an ionizing radiation. In the case of ultraviolet hardening, it can be caused by ultra-high pressure water, high-pressure mercury lamp, carbon arc lamp, b lamp or metal 岐 light. The amount of light irradiation may be 50 to 300 mJ/cm 2 in terms of an integrated exposure amount of an ultraviolet wavelength of 365 nm. In the step (4), it is also possible to enter (4) when drying before the light irradiation. Examples of the drying method include a method of drying under reduced pressure or heating, and a method of roughening the drying. Further, it is preferable to dry at 3 〇 to u 〇 0c in the case of drying. For example, when a methyl isobutyl snail is used as the first or second solvent, 'usually at room temperature to 8 Gt, preferably 耽 arm c range H, =0 seconds to 3 minutes, preferably 3 seconds. ~i minutes or so = dry. The refractive index formed in the step (W) may be inclined to the thickness of the HC layer, and may be appropriately adjusted depending on the desired hardness, antireflection property, and the like. The film thickness of the gradient slanting layer may be, for example, 1 to 20 μm. (Optical film) 099143668 42 201130658 The flute of the present invention. The film obtained by the method is characterized in that it is less produced according to the above optical film: the film is attached to the surface side of the light-transmitting substrate to the oblique hard coat layer. The optical property is characterized in that the riding rate is such that the refractive index of the high refractive index fine particles of the hard refractive index is less than 1 GGnm, and the film thickness of the high refractive index material (four) layer is small. "The amount of scorpion is closer to the light-transparent substrate side τ mechanical film! The refractive index is set on the light-transmissive substrate 1 ,, the stone coating is 20 〇, and the refractive index is inclined in the hard coating 2 ,, in the direction of the film thickness of the refractive = two coating, the presence of the high refractive index microparticles The closer the amount is to the light-permeable substrate side, the less. Fig. 4 is a plan view schematically showing another example of the layer constitution of the optical film of the present invention. Further, in order to simplify the description, the high refractive index fine particles in the HC layer are inclined in the refractive index in Figs. 4 to 6 . On the light-transmitting substrate 1G, a refractive index-inclined hard coat layer 2G and a low-refractive-index layer 8A are sequentially provided from the side of the light-transmitting substrate. In the above method for producing an optical film, after the step (iv), the step of setting (v) on the upper shot (four) obliquely hard (four) directly forms the roughness layer of 099143668 43 201130658. An optical film composed of layers. Fig. 5 is a cross-sectional view schematically showing another example of the layer constitution of the optical film of the present invention. On the light-transmissive substrate 10, a refractive index oblique hard coat layer 20, a high refractive index layer 9A, and a low refractive index layer 8A are sequentially provided from the side of the light-transmitting substrate. In the method for producing an optical ruthenium film, after the step (iv), the step of forming a low refractive index layer on the refractive index slanted hard coat layer and the high refractive index layer is further provided. An optical film composed of such a layer. Fig. 6 is a cross-sectional view schematically showing another example of the layer constitution of the optical film of the present invention. On the light-transmitting substrate 10, an antistatic layer 100, a refractive index oblique hard coat layer 20, a high refractive index layer 9A, and a low refractive index layer 80 are sequentially provided from the side of the light transmissive substrate. In the above method for producing an optical film, the step of (1) and (4) is further improved (the step of forming an antistatic layer on the surface of the light-transmitting substrate by tilting the hard coat layer to form an antistatic layer) is obtained. An optical film composed of such a layer is provided with an electrostatic property by providing an electric layer. The first optical film of the present invention has the first composition by using a high refractive index fine particle not containing a specific degree as described above. The material and the micro-particles containing the specific rate of radiation, the material is coated with mi (10) wheel _, material material H layer 099143668 201130658 = = refractive index tilt Hc layer film thickness direction 'high refractive index particles Yu near light? The amount of the secret substrate is less. Therefore, the light penetrating base of the HC layer at the _ rate can be used to suppress the high-definition micro-disc disk light. • The miscellaneous substrate or the anti-static material T layer The interference fringes generated by the difference are excellent, and the appearance of the optical film is excellent. Further, the 'surface refractive index fine particles are not uniformly distributed in the Hc layer of the refractive index, and are distributed on the upper layer side, so that the refractive index can be inclined by the light of the layer. Efficiently high refraction of the opposite side of a material Therefore, when the low refractive index layer is provided as shown in Figs. 4 and 5 on the light-transmitting substrate side surface side of the refractive index tilting layer, the antireflection property of the optical film can be improved. In a preferred embodiment of the optical film of the invention, the low refractive index layer 3 has a medium to oxygen cut. Thus, the optical film has an excellent antireflection property. In the optical film of the present invention, As shown in Fig. 3, in the layer in which the refractive index is inclined, in the film thickness direction of the gradient refractive index HC layer, the portion of the higher refractive index microparticles which is closer to the interface of the lower refractive index layer side is present, so the refractive index is inclined. The refractive index of the low-refractive-index layer side interface of the HC layer and its vicinity is high. The low-refractive-index layer on the gradient-inclined HC layer contains the hollow steel dioxide and the low-refraction of the irradiance HC layer. The difference between the interface portion of the rate layer side and the low refractive index layer is large, and the optical thinness has excellent (4) anti-reflectivity. In other preferred embodiments of the optical film of the present month, even if the above-mentioned 099143668 45 201130658 Low refractive index layer containing fluorinated by metal And (4) selecting one of the low refractive index components L of the lysing group to obtain an optical film having D preventing properties. In another preferred embodiment of the optical film of the present invention, the above-described seven-dimensional layer It is a viewpoint that the low-refractive-index component which is selected from the group consisting of a metal gasification and a fluororesin, and which is sufficient to prevent the reflectance and the testability from being able to form two phases, is not included. Further, when the optical film of the preferred embodiment is used, the polarizing plate can be produced at a low cost without using a ruthenium film in the alkalization treatment. The low refractive index layer of the optical film of the present invention is suitably disposed. The refractive layer, the layer, the antistatic layer and the antifouling layer have been described in the method for producing an optical film, and the description thereof is omitted here. The optical thin film of the present invention is preferably in the above-mentioned refractive index oblique hard coat layer. The region of the surface of the permeable substrate opposite to the surface of the hard coat layer is 7% by weight or less, and 90% or more of the total amount of the high refractive index fine particles is present. As shown in FIG. 3, in the region of the refractive index gradient Hc layer, the refractive index of the light-transmitting substrate from the surface side interface to the light-transmitting substrate side is inclined to 70% of the film thickness of the Hc layer. 9% or more of the high refractive index fine particles are present, and the high refractive index fine particles existing at the light transmissive substrate side interface of the refractive index inclined HC layer are less, and the refractive index inclined HC layer and the light transmissive substrate can be suppressed more. Interference fringes between the antistatic layer and the antistatic layer occur. 099143668 46 201130658 In addition, although FIG. 3 is taken as an example, the distribution of the high refractive index microplates in the refractive index inclined HC layer may be formed by providing other layers as shown in FIGS. 4 to 6. In the optical film of the present invention, in the above-mentioned refractive index oblique hard coat layer, it is also possible to form a state in which a tackifier is contained in the vicinity of the interface on the side of the light-transmitting substrate, and the refractive index is tilted hard. The coating contains a tackifier in its entirety. As described above, when the first composition constituting the refractive index-inclined HC layer contains a viscous agent for adjusting the viscosity, the refractive index is inclined to the vicinity of the interface of the light-transmitting substrate side of the HC layer because it is mainly composed of Since the composition is formed, it becomes contained in this region. Further, in the case where both the first composition and the second composition contain a tackifier, the viscosity-increasing HC layer contains a tackifier. [Examples] Hereinafter, the present invention will be described more specifically by way of examples. The invention is not limited by this description. As a high-refractive-index microparticle sol (1), it is made by the 曰Chemical Industry Co., Ltd.

Isopropanol dispersion of ZnSb2〇6, trade name CX-Z210IP-F2 (average particle size 15 nm, solid content 2〇〇/0 dispersion). - As a yttrium-indexed fine particle sol (2), it is made from 曰 化学 化学 - - - - 〇 〇 〇 麟 麟 麟 麟 麟 麟 麟 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 3% by weight of the dispersion). As the high refractive index microparticle sol (3), a MEK dispersion of Zr〇2 manufactured by Seiko Chemical Industry Co., Ltd., trade name OZ-S30K (average particle diameter l〇nm, solid 099143668 47 201130658, 30% dispersion) was used. liquid). As the low-refractive-index fine particles, hollow two-gas fossil granules (average primary particle diameter: 50 nm, solid content: 20%, and void ratio: 4 Å) are used as the metal fluoride, and the product is made of CI chemical compound. Cryolite (Na3AlF6), a solid 15% MIBK solution. As a binder component (1), a multi-functional system made by Shin-Nakamura Chemical Industry Co., Ltd.

Jfec-based carboxylic acid is an acrylic acid, and the trade name is U-4HA (duandan βΛΓν, Knife 600, and functional group 4). As the binder component (2), a product name KAYARAD-DPHA (a mixture of DPPA (dipentaerythritol pentaacrylate: 5-functional) and DPHA (dipentaerythritol hexaacrylate: 6-functional)) manufactured by Nippon Kayaku Co., Ltd. was used. As the binder component (3), pentaerythritol triacrylate produced by Nippon Kayaku Co., Ltd. was used. As the binder component (4), a trade name LINC-3A (fluoromonomer) manufactured by Kyoeisha Chemical Industry Co., Ltd. was used as the solvent (1), and methyl ethyl ketone having permeability to the TAC substrate was used. As the solvent (2), isopropyl alcohol which does not have permeability to the TAC substrate is used. As the solvent (3) ', decyl isobutyl ketone was used. As a tackifier, the trade name Selney HPC-M (propylcellulose) manufactured by Sakamoto Soda Co., Ltd. was used. As the photopolymerization initiator (1), trade name IRGACURE 184 manufactured by Ciba Specialty Chemicals Co., Ltd. was used. 099143668 48

S 201130658 As a photopolymerization initiator (2) ', trade name IRGACLRE 127 manufactured by Ciba Specialty Chemicals Co., Ltd. was used. As an antifouling agent, X-22-164E (Reactive Polyoxo Antifouling Agent) manufactured by Shin-Etsu Chemical Co., Ltd. was used. As the light-transmitting substrate, a TAC substrate made of a Coats wafer (trade name), trade name TF 80UL (thickness 80/xm, refractive index 1 47) was used. The abbreviations of the respective compounds are as follows. IPA : isopropanol MEK : mercapto ethyl ketone MIBK : mercapto isobutyl ketone PETA: pentaerythritol triacrylate TAC : triethyl hydrazine cellulose (modulation of composition), respectively, with the components of the composition shown below Composition. (The first hard coat layer curable resin composition 1, viscosity 5.3 mPa · s) Adhesive component (1) U-4HA: 20 parts by mass of binder component (2) KAYARAD_DPHA: 30 parts by mass. Solvent (l) MEK : 37.5 mass Part of solvent (2) IPA: 12.5 parts by mass of photopolymerization initiator (1) IRGACURE 184 : 2 parts by mass (curable resin composition for second hard coat layer 1, viscosity 25.7 mPa · s) high refractive index microparticle sol ( 1) CX-Z210IP-F2 : 83.3 parts by mass 099143668 49 201130658 Adhesive component (1) U-4HA : 8.3 parts by mass of solvent (1) MEK : 8.4 parts by mass of photopolymerization initiator (1) IRGACURE 184 : 0.3 parts by mass (second Hardenable resin composition for hard coat layer 2. Viscosity 15.ImPa·s) High refractive index fine particle sol (2) CX-S303IP : 66.6 parts by mass of binder component (1) U-4HA: 20.0 parts by mass of solvent (l) MEK: 13.4 parts by mass of photopolymerization initiator (1) IRGACURE 184 : 0.8 parts by mass (curable resin composition for second hard coat layer 3, viscosity: 28.5 mPa · s) High refractive index sol (2) CX-S303IP : 87.5 parts by mass of binder component (1) U-4HA: 8.7 parts by mass of solvent (1) MEK: 3.8 parts by mass of photopolymerization initiator (1) IRGAC URE 184 : 0.4 parts by mass of tackifier by propyl cellulose: 0.2 parts by mass (curable resin composition for second hard coat layer 4, viscosity: 24.2 mPa · s) High refractive index sol (3) OZ-S30K : 87.5 parts by mass of binder component (1) U-4HA: 8.7 parts by mass of solvent (1) MEK ··3.8 parts by mass of photopolymerization initiator (1) IRGACURE 184 : 0.4 parts by mass of tackifier by propylcellulose: 0.3 Parts by mass (composition of high refractive index layer) High refractive index microparticle sol (1) CX-Z210IP-F2 : 28.6 parts by mass 099143668 50 201130658 Adhesive component (3) ΡΕΤΑ : 2.3 parts by mass of solvent (3) ΜΙΒΚ : 69.1 by mass Photopolymerization initiator (2) IRGACURE 127 : 0.1 parts by mass (composition for low refractive index layer 1) Hollow ceria particles: 15.0 parts by mass of binder component (3) ΡΕΤΑ : 1.0 part by mass of binder component (4 ) LINC-3A : 1.0 part by mass of solvent (3) MIBK : 83.0 parts by mass of photopolymerization initiator (2) IRGACURE 127 : 0.1 part by mass (composition 2 for low refractive index layer) Adhesive component (4) LINC-3A : 3.0 parts by mass of photopolymerization initiator (2) IRGACURE 127 : 0.15 parts by mass of antifouling agent X-22-164E : 0.06 parts by mass Agent (3) MIBK: 96.91 parts by mass (composition material 3 for low refractive index layer) Metal fluoride (cryolite): 10 parts by mass of binder component (3) PETA: 0.5 part by mass of binder component (4) LINC-3A : 0.5 parts by mass of photopolymerization initiator (2) IRGACURE 127 : 0.05 parts by mass of antifouling agent X-22-164E : 0.05 parts by mass of solvent (3) MIBK : 88.9 parts by mass (Example 1) 099143668 51 201130658 at TAC base In the material, the first composition 1 and the first composition 1 are used in which the first composition 1 is located on the substrate (lower layer) side than the first composition 1 described above. The coating was carried out by applying a coating at a coating speed of 2 〇 m/min to form a coating film. The coating film was dried for 3 seconds to remove the solvent. Then, the coating film was irradiated with ultraviolet rays at an irradiation amount of 8 〇 mJ/cm 2 using an ultraviolet irradiation device, and the coating film was cured to form a refractive index inclined HC layer having a dry film thickness of 12 μm. Next, the refractive index is inclined on the HC layer. The composition 1 for the low refractive index layer is coated with a grooved plate to form a coating film. The coating film was dried with the refractive index tilting HC layer and irradiated with ultraviolet rays to form a low refractive index layer having a dry film thickness. The optical film having the refractive index of the layer and the low refractive index layer was formed on the TAC substrate. (Example 2) In Example 1, except that the second composition 2 was used instead of the second composition i, the same procedure as in Example 丨 was performed to fabricate an optical fiber having a refractive index gradient HC layer and a low refractive index layer on a TAC substrate. film. (Example 3) In Example 2, except for the first composition! An optical film having a refractive index-inclined HC-deficient low refractive index layer on a TAC substrate was prepared in the same manner as in Example 2 except that 5 parts by mass of a tackifier (Selney HPC_M) was added and the viscosity was adjusted to 148 mPa·s. (Example 4) 099143668 52 201130658 In Example 1, except that 1% by mass of a tackifier (Selney HPC-M) was added to the first composition 1 to adjust the viscosity to 20.4 mPa · s, and the second was used. An optical film having a refractive index-increasing HC layer and a low refractive index layer on a TAC substrate was prepared in the same manner as in Example 1 except that the composition 3 was used instead of the second composition 1. (Example 5) In Example 1, except that the second composition 4 was used instead of the second composition 1, the optical having the refractive index inclined HC layer and the low refractive index layer formed on the TAC substrate was treated in the same manner as in Example 1. film. (Example 6) In Example 5, except that the viscosity was adjusted to 20 4 mPa · s by adding 1 part by mass of a tackifier (Selney HPC-M) to the first composition, the same procedure as in Example 5 was carried out. An optical film having a refractive index tilted Hc layer and a low refractive index layer on the TAC substrate. (Example 7) The same procedure as in Example 直到 was carried out until the formation of the refractive index-slanted HC layer. Next, the above-mentioned high refractive index layer twisted material was coated on the HC layer with a grooved plate to form a coating film. The coating film was dried at the same refractive index as the HC layer, and the ultraviolet ray layer was formed to form a high refractive index layer which was dried to i6 Qnm.

Next, on the high refractive index layer, the low refractive index layer composition i is coated with a grooved pattern to form a coating film. The coating film was dried and irradiated with ultraviolet light to form a low-refractive-index layer having a dry film thickness of 100 nm, and was formed on a TAC substrate having a refractive index tilt hc layer, a high refractive index layer, and a low refractive index gradient of HC 099143668 53 201130658. An optical film of a refractive index layer. (Example 8) The same procedure as in Example 5 was carried out until the formation of the refractive index inclined HC layer. Next, the composition for low refractive index layer 2 was coated on the HC layer with a refractive index, and the coating film was formed by using a grooved plate. The coating film was dried with the refractive index-slanted HC layer and irradiated with ultraviolet rays to form a low refractive index layer having a dry film thickness of 1 〇〇 nm, and an optical film having a gradient refractive index HC layer and a low refractive index layer on a TAC substrate. . (Example 9) In Example 8, except that the composition 3 for the low refractive index layer was used instead of the composition 2 for the low refractive index layer, the same manner as in Example 8 was carried out to produce a gradient refractive index HC layer on a TAC substrate. An optical film of a low refractive index layer. (Comparative Example 1) In Example 5, except that the ratio of the unmodified MEK to the IPA was used and the two kinds of mixed solvents were added to the first composition! The viscosity of the first composition i was adjusted to 1.2 mPa·s, and the MEK was added to the second composition 4, and the viscosity of the second composition 4 was adjusted to 5 mPa·s for 5 weeks. An optical film having a gradient refractive index hc layer and a low refractive index layer on a TAC substrate. (Comparative Example 2) 099143668

S 54 201130658 In Example 1, except that 10,0 parts by mass of a tackifier (Selney HPC-M) was added to the first composition 1, and the ratio of MEK to IPA of the first composition 1 was not changed and The amount of the two mixed solvents is reduced, the viscosity of the first composition 1 is adjusted to 109.5 mPa·s, and 5.0 parts by mass of the tackifier (Selney HPC-M) is added to the second composition 1, and The solvent of the second composition 1 was not changed and the amount of reduction was adjusted. The viscosity of the second composition 2 was adjusted to 110.3 mPa·s, and the composition of Example 1 was prepared on a TAC substrate having a refractive index tilted HC layer and a low refractive index. An optical film of the layer. (Comparative Example 3) In Example 1, except that the ratio of the unmodified MEK to the IPA was used and the two kinds of mixed solvents were added to the first composition 1, the viscosity of the first composition 1 was adjusted to 1.2 mPa·s. In the same manner as in Example 1, an optical film having a refractive index inclined HC layer and a low refractive index layer on a TAC substrate was prepared. (Comparative Example 4) In Example 1, except that 10.0 parts by mass of a tackifier (Selney HPC-M) was added to the first composition 1, and the ratio of MEK to IPA of the first composition 1 was not changed. Further, the amount of the two kinds of the mixed solvent was reduced, and the viscosity of the first composition 1 was adjusted to 109.5 mPa·s, and the same manner as in Example 1 was carried out to produce a gradient refractive index HC layer and a low refractive index layer on the TAC substrate. Optical film. (Comparative Example 5) In Example 5, except that the viscosity-adjusted 099143668 55 201130658 agent was used in the second composition 4 and the viscosity was adjusted to 2_5 mPa·s, it was processed in the same manner as in Example 5, and was fabricated on a TAC substrate. Optical film having a refractive index tilted pjc layer and a low refractive index layer (Comparative Example 6) In Example 1, except that 5 Å by mass of a tackifier (SelneyHPC-M) was added to the second composition ,, and The amount of the solvent component of the second composition 1 was decreased, and the viscosity was adjusted to ll 〇3 mPa·s. The optical film having the refractive index inclined HC layer and the low refractive index layer on the TAC substrate was treated in the same manner as in Example i. (Comparative Example 7) The above-described first composition 1 was coated on a TAC substrate using a grooved plate to form a coating film. The coating film was dried for 3 seconds to remove the solvent. Next, a coating and an external beam irradiation apparatus were used for the coating film, and ultraviolet irradiation was performed at an irradiation amount of 8 〇mj/cm2 to cure the coating film to form a HC layer having a dry film thickness of 12 μm. Next, on the HC layer, the composition 1 for the low refractive index layer was coated with a grooved plate to form a coating. The coating film was dried with the HC layer and irradiated with ultraviolet rays to form a low refractive index layer having a dry film thickness of 1 〇〇 nm, and an optical layer having a HC layer and a low refractive index layer containing no high refractive index fine particles on a tac substrate. film. (Comparative Example 8) In Comparative Example 7, except that the composition 3 for the low refractive index layer was used instead of the composition 1 for the low refractive index layer, the same procedure as in Comparative Example 7 was carried out, and a layer of tac based on 099143668 56 201130658 and a low refractive index were produced. The layer of light material has a ruthenium containing no high refractive index particles. Learn film. (Comparative Example 9) On the TAC substrate, the first composition 1 was applied using a grooved plate coater, and the coating film was subjected to a temperature of 7 G for 3 seconds to remove the solvent. Next, the coating film is irradiated with an ultraviolet ray irradiation device, and the HCf is not irradiated with a high-refractive-index micro-second, and the second component is a groove type. The plate applicator was coated and dried in a hot oven at 7 degrees Celsius for 30 seconds to remove the solvent. Then, the coating film was irradiated with an ultraviolet irradiation device at an irradiation amount of 1 GGm] to form a HC layer containing high refractive index fine particles, and a total of two layers of the upper and lower layers were formed to have a U/xn^Hc layer. Next, a low refractive index layer having a dry film thickness of 100 nm was formed on the HC layer using the composition for the low refractive index layer described above, and was formed on a tac substrate, and was formed from the TAC substrate side. An optical film of an HC layer of high refractive index microparticles, an HC layer containing high refractive index microparticles, and a low refractive index layer. (Comparative Example 10) In Comparative Example 9, except that the composition 2 for the low refractive index layer was used instead of the composition 1 for the low refractive index layer, it was processed in the same manner as in Comparative Example 9, and was produced on the material of tac, and the side of the TAC substrate was used. Initially, an optical, thin 099143668 57 201130658 film having no high refractive index microparticle 2HC layer, an HC layer containing south refractive index microparticles, and a low refractive index layer. The types, viscosity, coating method, wet film thickness and other composition used in the first and second compositions of the above examples and comparative examples are shown in Table 1. 099143668 58 201130658 [Table i] Table 1 First composition (lower side) Second composition (upper side) Coating method Wet film thickness ratio (T1/T2) Other composition type (number) Viscosity (mPa · s) Type (number) Viscosity (mPa · s) Example 1 1 5.3 1 25.7 Simultaneous 5//πι/25μπι Composition for low refractive index layer 1 Example 2 1 5.3 2 15.1 Simultaneous 5#m/25"m Low refractive index Composition for layer 1 Example 3 1 (with tackifier) 14.8 2 15.1 Simultaneous 5 μιη / 25 μπι Composition for low refractive index layer 1 Example 4 1 (with tackifier) 20.4 3 28.5 Simultaneous 5/zm/25/ Zm composition for low refractive index layer 1 Example 5 1 5.3 4 24.2 Simultaneous 5#ιη/25μπι Composition for low refractive index layer 1 Example 6 1 (with tackifier) 20.4 4 24.2 Simultaneous 5^m/25/ Zm composition for low refractive index layer 1 Example 7 1 5.3 1 25.7 Simultaneous 5//m/25^m Composition for high refractive index layer + composition for low refractive index layer Example 8 1 5.3 4 24.2 Simultaneous 5 ^m/25//m Composition for low refractive index layer 2 Example 9 1 5.3 4 24.2 Simultaneous 5^m/25/zm Composition for low refractive index layer 3 Example of vehicle exchange 1 1 1.2 4 2. 5 Simultaneous 5^m/25^m Composition for low refractive index layer 1 Comparative Example 2 1 (with tackifier) 109.5 1 (with tackifier) 110.3 Composition of low refractive index layer at the same time 5/zm/25/zm Comparative Example 3 1 1.2 1 25.7 Simultaneous 5/zm/25^m Composition for Low Refractive Index Layer 1 Comparative Example 4 1 (with tackifier) 109.5 1 25.7 Simultaneous 5^m/25^m Low refractive index layer Composition 1 Comparative Example 5 1 5.3 4 (no tackifier) 2.5 Simultaneous 5/zm/25^m Composition for low refractive index layer 1 Comparative Example 6 1 5.3 1 (with tackifier) 110.3 At the same time 5// m/25^m Composition for low refractive index layer 1 Comparative Example 7 1 5.3 Composition without single layer 1 time without low refractive index layer Comparative Example 8 1 5.3 No single layer 1 time without low refractive index layer Composition 3 Comparative Example 9 1 5.3 1 25.7 Composition without a low refractive index layer 1 Comparative Example 10 1 5.3 1 25.7 Composition without a low refractive index layer 2 099143668 59 201130658 (Evaluation of optical film) Regarding the above embodiment The optical thinness of the comparative example and the reflectance measurement shown below were respectively performed. The optical films of the above-described examples and comparative examples were subjected to interference fringes, adhesion, planarity (with or without coating), distribution of high refractive index fine particles, and productivity (suitability and simplicity). )evaluation of. Further, with respect to Examples 8 and 9, and Comparative Examples 7 to 10, the evaluation of the testability was performed. The results are shown in Table 2. (Measurement of reflectance) The reflectance was measured by using the product name v7100 ultraviolet visible light spectrophotometer manufactured by JASCO Corporation and the product name emblem -7_absolute reflectance measuring device manufactured by JASCO Corporation. The angle 5 and the polarizer are N-polarized, and the measurement wavelength range is 380 to 780 nm, and the black tape is attached to the TAC substrate side of the optical film, and is set in the apparatus. Further, the average value of the measurement results obtained by measuring the wavelength range was defined as the reflectance. (Evaluation of interference fringes) An interference fringe inspection lamp (Na lamp) manufactured by Naftec Co., Ltd. was used for visual inspection and evaluated on the basis of the following criteria. 〇: The occurrence of interference fringes was almost completely observed. X · 'Evaluation of interference fringes clearly (evaluation of adhesion) The optical films of the above-described examples and comparative examples were respectively subjected to a horizontal disk close-up as shown below. Determination of the adhesion rate of the sex test. 099143668 60 201130658 (Checkerboard adhesion test) The base of the human>_ grid is added to the 1 mm square of the low refractive index layer side surface of the optical film, and the total density is made using Nichiban (股) ^ /η 24mm

Cello-Tape (registered trademark) performs five consecutive _tests. The reference calculates the ratio of the _ residual component. 'And according to the lower adhesion ratio (%H undivided component number / 100 Λ ridge number 100) χ (evaluation of the surface) Visually evaluate the appearance of the optical film (with or without coating) estimate. ◦. No coating pattern was observed Δ: Obscuring the coating pattern clearly observed the coating pattern (refractive index tilting HC layer + high refractive index microparticle distribution) ΤΕΜ photo observation of the optical film profile, seeking The refractive index is inclined by π layer or the total amount of HC-emitting high-refractive-index particles is 9〇%. < The film thickness ratio from the side of the low refractive index layer side. (Productivity (Applicability)) In each of the above Examples and Comparative Examples, the applicability of the first composition and the second composition to the TAC substrate when only the coating speed was changed was evaluated by the following criteria. 〇: Even if the coating speed is l〇m/min or more, it can be applied without coating. 099143668 61 201130658 △. The coating speed of coating without coating is 1 m/min or less X: Any speed All of them produced a coating pattern (testability). The optical film was placed at 55. In a 2 equivalent aqueous sodium hydroxide solution of hydrazine, it was immersed for 2 minutes. Secondly, after washing with sufficient water, it was dried at 7 (rc for 5 minutes. Secondly, using steel wool of #〇0〇〇, with a friction load of 0.98 N (100 gf) ) 'Flip back and forth 1 〇: Under, visually observe whether there is damage or peeling of the low refractive index layer, and evaluate it according to the following criteria. 无. No damage and peeling on the low refractive index layer X. Damage or flaking in the low refractive index layer From the results of the reflectance obtained and the refractive index of the optical films of Examples 1 to 9 and Comparative Examples 1 to 6, the HC layer was measured, and the amount of refractive index microparticles present in the film thickness direction was measured by XPS. The refractive index-inclination HC layer continuously decreased from the interface on the side of the low refractive index layer toward the interface on the side of the TAC substrate. The examples i to 9 and the comparative examples 1 which were simultaneously coated in the above examples and comparative examples. In the case of "6", the number of steps is small, and the production of the optical film can be easily performed. In Comparative Examples 9 and 10 in which the coating was applied successively, the application of the composition and the hardening step of the light irradiation were inferior in convenience. 099143668

62 201130658 CN The composition is 1 1 1 1 1 1 1 〇〇1 1 1 1 1 1 1 X 〇X The side of the 开始X side is set to the gradient of the HC layer, the low refractive index layer, and the 匕 refers to the HC containing the high refractive index particles. Floor. Productivity | Simplicity I 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇 XX Applicability 〇〇〇〇〇〇〇〇〇0 0 < XXX 〇〇〇〇 High refractive index microparticles 90%# in the film thickness ratio 〇SS home high folding HC layer film thickness 90% high folding HC layer film thickness 90% surface (coated grain) 〇〇〇〇〇〇〇〇〇<] X <1 X 0 X 〇〇〇〇 close 14 (%) 〇〇8 1-Η 〇8 8 8 〇〇r—Η 〇〇8 〇〇|Interference fringe〇〇〇〇〇〇〇〇〇〇〇 〇〇〇〇〇〇XX Reflectance 0.51 0.60 0.54 0.42 | 0.40 0.35 0.28 1—Η »-Η 0.75 1 0.65 °·42 1 0.61 0.45 0.66 0.54 〇〇〇!·82 1 0.50 1.25 is U Η砸*ffi - m ^ S ΐ Η 4 Ϊ Ϊ long s: paint right U fg ^ ffi, 艮 layer composition * 斜 page oblique HC7TAC cake page oblique HC7TAC 斜 oblique HCYTAC cake page oblique HC7TAC health page oblique HC7TAC cake shell oblique HCYTAC low / high / Tilt HCYTAC Pie Page Oblique HCAAC Skew HC/TAC Like Tilt HC/TAC Page Oblique HC7TAC Like Tilt HC7TAC Pie Page Oblique HC7TAC Pie Page Oblique HC7TAC HC7TAC Na C7TAC NaCYTAC Like High Fold HC/HCYrAC W High Fold HC/HCTTAC Coating Method ca 1: Simultaneous n? ΪΕ | Single Layer 1 Back] Single Layer 1 Time Successive | Successive | I Example 1| | , Example 3I | Example 4 1 Example 5 | Example 6 I | Example f] | Example Example 9 | Example 1 | 丨 Comparative Example 2 | 丨 Comparative Example 3 | Example 4 | 丨 Comparative Example 5 | 丨 Comparative Example 6 | 丨 Comparative Example 7 I | Comparative Example 8 | 丨 Comparative Example 9 I | Comparative Example ίο | S°°99ε-660 s 201130658 (Summary of Results) From Table 2, Example 7 The optical films of Comparative Examples 66 and 9 achieved good reflectance. In particular, Example 7 in which the layers of the refractive index-inclined HC layer, the high-refractive-index layer, and the low-refractive-index layer were formed had a low reflectance. In the optical films of Examples 8 and 9 which used a fluorine-based low refractive index material for the composition for a low refractive index layer, the reflectances were respectively the discrimination and Q 75, and sufficient antireflection properties were obtained. In particular, the optical film of Example 9 did not contain hollow silica fine particles, and even if the (iv) low-fold material was used, the negative film was lower than the optical film of Comparative Example 7 using hollow silica fine particles. When the optical film of Example 9 was compared with the optical film of Comparative Example 1G, both had the same low refractive index layer and contained particles in the layer adjacent to the low refractive index layer, but the optical film of Example 9 was used. The reflectance of the second embodiment is lower than that of the upper layer and the medium refractive index microparticles are evenly distributed in the vicinity of the interface on the effective conversion layer side. The optical film of Example 1Q, "increasing the refractive index difference between the low refractive index (four) and the refractive index tilting HC layer. For the evaluation of interference fringes of ΙΓ1 to 9 纽 例1~8 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The optical films of Examples 1 to 9 were evaluated for good adhesion and surface properties. The optical films of Comparative Examples 1 to 6 were less dense than the examples, and coated on the surface of 099143668 201130658. In particular, in the case of the optical films of Comparative Examples 2, 4 and 6, the at least one of the first group and the second composition was slightly too high, and the coating speed was 20 m/min, which was easy to produce a coating, and was planar. The assessment is χ. Since the state of the coated surface was poor due to the occurrence of the coating pattern, it was estimated that the optical films of Comparative Examples 2, 4 and 6 were inferior in the evaluation results of the adhesion. The optical films of Comparative Examples 7 and 8 were evaluated for good adhesion and surface. It was inferred that only the first component i was used and the H c layer was formed i times. The optical thinness of Comparative Examples 9 and 10 was evaluated as good in the planar shape, but the adhesion was insufficient. It is presumed that the upper and lower layers are formed separately, so the adhesion of the layer interface is insufficient. The refractive index of the optical film of the example is inclined in the HC layer, and according to the cross-sectional observation, 90% of the high refractive index fine particles are present in the film thickness of the low refractive index layer side interface of the refractive index inclined H◦ layer up to 70%. In the optical films of Comparative Examples 1 and 3 to 6 other than Comparative Example 2, the high refractive index was distributed by the particles up to the end of the TAC substrate side interface until 90% and 95% of the film was completed. In the optical films of Comparative Examples 9 and 1 which were successively applied, the high-refractive-index fine particles were uniformly distributed in the entire film thickness direction of the HC layer containing the high refractive index fine particles on the upper layer side. The viscosity of the first composition and the second composition of the % example is good in productivity (suitable coating property). However, in Comparative Examples 1 to 6, the coating speed was not produced and the coating speed 可 143 668 65 201130658 was low, or the coating pattern was produced even if the coating speed was slowed down. The optical films of Comparative Examples 7 to 10 were not coated at the same time, and the coating properties were good because the compositions of the first type were coated or the composition was applied in one form. In the optical films of Comparative Examples 7 and 9 in which the hollow cerium oxide fine particles were contained in the low refractive index layer, the alkali resistance was insufficient. On the other hand, in the optical films of Examples 8 and 9 which do not contain hollow ceria particles in the low refractive index layer, it is possible to sufficiently prevent the reflectance and the testability from being two phases. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing an example of a method for producing an optical film of the present invention. Fig. 2 is a schematic view showing an example of a simultaneous coating method using an extrusion type plate applicator. Fig. 3 is a cross-sectional view schematically showing an example of a layer configuration of an optical film of the present invention and a distribution of high refractive index fine particles in a film thickness direction in a refractive index inclined HC layer. Fig. 4 is a cross-sectional view schematically showing another example of the layer constitution of the optical film of the present invention. However, the existence of particles is omitted. Fig. 5 is a cross-sectional view schematically showing another example of the layer constitution of the optical film of the present invention. However, the existence of particles is omitted. Fig. 6 is a cross-sectional view schematically showing another example of the layer constitution of the optical film of the present invention. However, the existence of particles is omitted. [Main component symbol description] 099143668 66 201130658 1 Optical film 10 Light-transmissive substrate 20 Refractive index oblique hard coat 30 High-refractive-index micro-particle 40-plate applicator head 51 ' 52 Slit 60 First hard coat Curing resin composition 70 Curable resin composition for second hard coat layer 80 Low refractive index layer 90 High refractive index fine particles 100 Antistatic layer 099143668 67

Claims (1)

201130658 VII. Patent Application Range: 1. A method for producing an optical film, comprising: (1) a step of preparing a light-transmitting substrate; (ii) preparing a first binder component and a first solvent, and not containing The high refractive index microparticles' and the viscosity of the first hard coat layer of 3 to 100 mPa.s are: a chemical resin composition, and a high refractive index fine particle having an average particle diameter of 1 to brain nm, a second binder component, and a second a solvent and a step of a curable resin composition for a second hard coat layer having a viscosity of 1 〇 to a rigid sheet; (in) one side of the light-transmitting substrate, the light-transmitting substrate On the side, the curable resin composition for the first hard coat layer and the curable resin composition for the second hard coat layer are adjacent to each other, and the curable resin composition for the first hard coat layer is more than the second hard coat layer. a step of coating the layer with a curable resin composition on the side of the light-transmitting substrate to form a coating film; and (IV) subjecting the coating film obtained in the above (out) step to light irradiation to be hardened, The step of forming a refractive index oblique hard coat layer. 2. The method for producing an optical film according to the first aspect of the invention, wherein the curable resin composition for the first hard coat layer and/or the curable resin composition for the second hard coat layer further contains a tackifier. Agent. 3. The method for producing an optical film according to the first aspect of the invention, wherein the viscosity of the curable resin composition for the first hard coat layer and the viscosity of the curable resin composition for the second hard coat layer (mPa· s) The absolute value of the difference is 30 or less. 4. The method for producing an optical film according to claim 1, wherein the light-transmitting substrate is a triacetyl cellulose substrate, and the first solvent has a triacetyl cellulose substrate. The permeability of the material. 5. The method for producing an optical film according to claim 1, wherein after the step (iv), further comprising (v) directly or interposing a high refractive index layer on the refractive index inclined hard coat layer. A step of forming a low refractive index layer. 6. The method for producing an optical film according to claim 5, wherein the composition for the low refractive index layer which forms the low refractive index layer is cured, and the hollow cerium oxide fine particles are contained. 7. The method for producing an optical film according to the fifth aspect of the invention, wherein the low refractive index layer composition for curing the low refractive index layer is selected from the group consisting of metal fluoride and curable fluororesin. At least one of low refractive index materials. 8. The method for producing an optical film according to claim 7, wherein the low refractive index layer composition for curing the low refractive index layer is free of hollow cerium oxide microparticles and contains metal fluoride and At least one low refractive index material selected from the group consisting of curable fluororesins. 9. The method for producing an optical film according to claim 1, wherein, between the steps (1) and (iii), further comprising (vi) setting a refractive index oblique hard coating on the light-transmitting substrate; The surface of the layer forms the step of forming an antistatic layer. An optical film, which is characterized by the method of any one of claims 1 to 9 099143668, and the method of 2011, 2011, 658. U. An optical film is characterized in that at least one of the refractive index oblique hard coat layers is provided on one side of the light-transmitting substrate, and the refractive index oblique hard coat layer has a high refractive index of an average particle diameter of 1 to 100 nm. In the refractive index oblique hard coat layer, the microparticles are less in the film thickness direction of the refractive index oblique hard coat layer as the amount of the refractive index microparticles is closer to the light penetrating side. The optical film according to claim 5, wherein in the above-mentioned refractive index oblique hard coat layer, the interface from the opposite side of the light-transmitting substrate to the refractive index of the refractive index is 7 In the area up to 〇%, the radio rate is more than 90% of the total amount of the full board. 13. The optical film of claim U, wherein the above-described refractive gradient hard coat layer contains a tackifier. 14. The optical film of claim 11, wherein the light penetrating substrate is a triacetyl cellulose substrate, and the matrix constituting the refractive index oblique hard coat layer is applied to the triethylene fiber. The refractive index of the plain substrate is inclined on the side of the hard coat layer = the two sides are also present. [1] The optical film of claim 11, wherein the surface of the light-transmissive substrate opposite to the refractive index-inclined hard coat layer is further inclined by the low refractive index layer or the refractive index A high refractive index layer and a low refractive index layer are provided on the coated side. 099143668 70 201130658 a A film according to the patent specification -15, wherein the low refractive index layer contains hollow silica dioxide particles. The fresh film of the fifteenth aspect of the invention, wherein the low refractive index layer contains at least one low refractive index component selected from the group consisting of metal fluorides and I resins. 18. For the patent _ Item 17 of the silk _, wherein the above low refractive index layer is not 3 towels. The oxygen-cut microparticles* contain at least one low refractive index component selected from the group consisting of a gold compound and a resin. 19. The optical film of claim 5, wherein an antistatic layer is further disposed between the light transmissive substrate and the refractive index oblique hard coat layer. m as in the optical film of claim 1 δ, wherein the optical film is placed in a 2 equivalent sodium hydroxide aqueous solution maintained at 55 ° C, followed by a 2 minute drop, followed by a 70 ° wash. c was dried for 5 minutes. Next, when the surface of the low refractive index layer was rubbed back and forth 10 times with a friction load Q 98N using a steel wool of #〇_号, the low refractive index layer was not damaged or peeled off. 21. The polarizing plate is characterized in that, on one side of the polarizing element, the optical film of any of the WOG items of the patent application (4), the light-transmitting substrate side of the second/secret direction faces the polarizing element. Configured. 22. An image-forming display, characterized by an optical film having any of the patents to 20. 099143668 71