JP5378862B2 - Resin composition and optical laminate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical laminate and a resin composition which can achieve excellent antistatic characteristics and antifouling properties. <P>SOLUTION: The resin composition contains &pi;-conjugated electroconductive polymer, a polymer dopant and an ionizing radiation-curable fluorinated acrylate. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an optical laminate provided on a display surface such as a liquid crystal display (LCD) or a plasma display (PDP), and more particularly to an optical laminate having antistatic properties and antifouling properties.

  An image display surface in an image display device such as a liquid crystal display, a CRT display, a projection display, a plasma display, or an electroluminescence display is required to be provided with scratch resistance so as not to be damaged during handling. Therefore, on the display surface, by using a hard coat film in which a hard coat layer is formed on a base film or a hard coat having an optical function such as antiglare property, an image of an image display device is used. It is common to improve the scratch resistance of the surface.

  The demand for functional performance required for functional films has been increasing as the size of displays has increased, the definition has been increased, and the contrast has been increased. Here, an antistatic property is required in order to prevent adhesion of dust that lowers the visibility of the display. In order to impart antistatic properties, it is known to sequentially laminate a conductive layer and a hard coat layer on a translucent substrate (Patent Document 1).

  In addition, there is a demand for antifouling properties such that dirt on the display surface is difficult to adhere and dirt is easy to wipe off. In order to impart antifouling properties, it is known to provide an antifouling layer on a hard coat layer (Patent Document 2).

Japanese Patent Laid-Open No. 2005-67118 JP 2007-297543 A

  In order to obtain a hard coat film satisfying antistatic properties and antifouling properties as described above, it was necessary to provide a plurality of layers. However, the provision of a plurality of layers has a problem that the cost is increased. Therefore, a first object of the present invention is to provide an optical laminate and a resin composition that exhibit good antistatic properties and antifouling properties. The second object of the present invention is to provide a low-cost optical laminate having a single-layer structure.

The present invention (1) contains a π-conjugated conductive polymer, a polymer dopant, an ionizing radiation curable fluorinated acrylate, and a polyfunctional urethane acrylate different from the ionizing radiation curable fluorinated acrylate. ,
The ionizing radiation curable fluorinated acrylate is a fluorinated alkyl group-containing urethane acrylate,
The amount of the π-conjugated conductive polymer is 0.5 to 5.0% by weight based on the total weight of the solid component,
The ratio of the π-conjugated conductive polymer to the polymer dopant is such that the polymer dopant component: π-conjugated conductive polymer component is in the range of 5:95 to 99: 1 as a mass ratio.
The blending amount of the ionizing radiation curable fluorinated acrylate is 0.05 to 50% by weight based on the total weight of the solid component,
The use ratio of the polyfunctional urethane acrylate is 10 to 80% by weight based on the total weight of the solid component.

The present invention (2) is the resin composition according to the invention (1), characterized by containing inorganic light-transmitting fine particles.

The present invention (3) is the resin composition according to the invention (1) or (2), wherein the resin composition contains organic translucent fine particles.

The present invention (4) is an optical laminate in which an optical functional layer is provided on one side or both sides of a translucent substrate, directly or via another layer,
The optical functional layer is obtained by curing the resin composition according to any one of the inventions (1) to (3).

This invention (5) is the optical laminated body of the said invention (4) characterized by the fluorine content of the resin composition which comprises the said optical function layer being 500-500000 ppm or less.

The present invention (6) is the optical laminate according to the invention (4) or (5) , wherein the radiation-curable fluorinated acrylate has 3 or more functional groups.

According to the onset bright achieves cured product, good antistatic properties, the effect of expressing the antifouling property.

<Optical laminate>
The optical laminate according to the best mode has a basic configuration in which an optical functional layer is laminated on a translucent substrate. The optical functional layer is obtained by curing a resin composition containing a π-conjugated conductive polymer, a polymer dopant, and an ionizing radiation curable fluorinated acrylate. Here, the optical functional layer may be laminated on one side of the translucent substrate or on both sides. Furthermore, the optical layered body may have other layers. Examples of the other layers include a polarizing substrate, a hard coat layer, and other function-imparting layers (for example, near infrared (NIR), absorption layer, neon cut layer, electromagnetic wave shielding layer, optical functional layer). Can do. The position of the other layer is, for example, on the light-transmitting substrate opposite to the optical function layer in the case of a polarizing substrate, and on the optical function layer in the case of another functional layer. The lower layer. Hereafter, each component (a translucent base | substrate, an optical function layer, etc.) of the optical laminated body which concerns on this best form is explained in full detail.

(Translucent substrate)
First, the translucent substrate according to the best mode is not particularly limited as long as it is translucent, and glass such as quartz glass and soda glass can also be used, but polyethylene terephthalate (PET), triacetyl cellulose ( TAC), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), polycarbonate (PC), polyimide (PI), polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), Various resin films such as cycloolefin copolymer (COC), norbornene-containing resin, polyethersulfone, cellophane, and aromatic polyamide can be suitably used. These films can be unstretched or stretched. In particular, a biaxially stretched polyethylene terephthalate film is preferable from the viewpoint of excellent mechanical strength and dimensional stability, and unstretched triacetyl cellulose (TAC) is preferable from the viewpoint of very little in-plane retardation. In addition, when using for PDP and LCD, these PET and TAC films are more preferable.

  The higher the transparency of these translucent substrates, the better. However, the total light transmittance (JIS K7105) is 80% or more, more preferably 90% or more. Further, the thickness of the translucent substrate is preferably thinner from the viewpoint of weight reduction, but considering the productivity and handling properties, the thickness of the translucent substrate is in the range of 1 to 700 μm, preferably 20 to 250 μm. Is preferred. When the optical laminate of the present invention is used for LCD applications, it is preferable to use TAC having a thickness of 20 to 80 μm as the translucent substrate. In the optical layered body of the present invention, curling can be prevented particularly when 20 to 80 μm TAC is used as a light-transmitting substrate, so that it is suitably used for LCD applications that are required to be thin and lightweight. be able to.

  In addition, surface treatment such as alkali treatment, corona treatment, plasma treatment, sputtering treatment, saponification treatment, application of surfactant, silane coupling agent, etc., or surface modification treatment such as Si deposition on the translucent substrate. By performing this, the adhesion between the translucent substrate and the optical functional layer can be improved. By performing these treatments, the adhesion between the translucent substrate and the optical functional layer is improved, so that the scratch resistance, surface hardness and chemical resistance in the optical functional layer are improved.

(Optical functional layer and resin composition)
Next, the optical functional layer according to the best mode will be described in detail. The resin composition according to the best mode contains a π-conjugated conductive polymer, a polymer dopant, and an ionizing radiation curable fluorinated acrylate. The optical functional layer according to the best mode is formed by curing the resin composition. The blending amount of the π-conjugated conductive polymer is essentially 0.5 to 5.0% by weight and 0.8 to 3.0% by weight with respect to the total weight of the solid component in the optical functional layer. Is particularly preferred. When the blending amount of the π-conjugated conductive polymer is less than 0.5% by weight, the antistatic property is hardly exhibited. If the blending amount of the π-conjugated conductive polymer is more than 5% by weight, the π-conjugated conductive polymer itself is colored, so that the haze increases and the optical properties may be impaired. The ratio of the π-conjugated conductive polymer to the polymer dopant is preferably in the range of 5:95 to 99: 1 in terms of mass ratio of polymer dopant component: π-conjugated conductive polymer component. When the ratio of the polymer dopant is less than 5, the doping effect on the π-conjugated conductive polymer tends to be weak, and the antistatic property may be insufficient. When the ratio of the polymer dopant is more than 95, the content ratio of the π-conjugated conductive polymer decreases, and it is difficult to obtain sufficient antistatic properties. The compounding amount of the ionizing radiation curable fluorinated acrylate is preferably 0.05 to 50% by weight, particularly preferably 0.1 to 40% by weight based on the total weight of the solid component in the optical functional layer. . When the blending amount of the ionizing radiation curable fluorinated acrylate is less than 0.05% by weight, the water repellent effect and the slipping property are lowered, and the scratch resistance, antifouling property and chemical resistance are deteriorated. When the blending amount of the ionizing radiation curable fluorinated acrylate is more than 50% by weight, the film forming property may be deteriorated. The fluorine content is preferably 500 to 500,000 ppm, particularly preferably 1000 to 450,000 ppm, based on the total weight of the solid component in the optical functional layer. When the fluorine content is less than 500 ppm, the water repellent effect and slipperiness are lowered, and the scratch resistance, antifouling property and chemical resistance are deteriorated. If the fluorine content is more than 500,000 ppm, the film forming property may be deteriorated.

π-conjugated conductive polymer π-conjugated conductive polymer is not particularly limited as long as the main chain is a polymer having a π-conjugated system. For example, polypyrroles, polythiophenes, polyacetylenes, polyphenylenes , Polyphenylene vinylenes, polyanilines, polyacenes, polythiophene vinylenes, and copolymers thereof. Among these, polypyrroles, polythiophenes, and polyanilines are preferable from the viewpoint of ease of polymerization and stability in air.

  Specific examples of the π-conjugated conductive polymer include polypyrrole, poly (N-methylpyrrole), poly (3-methylpyrrole), poly (3-ethylpyrrole), poly (3-n-propylpyrrole), poly (3-butylpyrrole), poly (3-octylpyrrole), poly (3-decylpyrrole), poly (3-dodecylpyrrole), poly (3,4-dimethylpyrrole), poly (3,4-dibutylpyrrole) , Poly (3-carboxypyrrole), poly (3-methyl-4-carboxypyrrole), poly (3-methyl-4-carboxyethylpyrrole), poly (3-methyl-4-carboxybutylpyrrole), poly (3 -Hydroxypyrrole), poly (3-methoxypyrrole), poly (3-ethoxypyrrole), poly (3-butoxypyrrole), poly (3-hexyl) Ruoxypyrrole), poly (3-methyl-4-hexyloxypyrrole), poly (3-methyl-4-hexyloxypyrrole), poly (thiophene), poly (3-methylthiophene), poly (3-ethylthiophene) ), Poly (3-propylthiophene), poly (3-butylthiophene), poly (3-hexylthiophene), poly (3-heptylthiophene), poly (3-octylthiophene), poly (3-decylthiophene), Poly (3-dodecylthiophene), poly (3-octadecylthiophene), poly (3-bromothiophene), poly (3-chlorothiophene), poly (3-iodothiophene), poly (3-cyanothiophene), poly ( 3-phenylthiophene), poly (3,4-dimethylthiophene), poly (3,4-dibutylthio) Phen), poly (3-hydroxythiophene), poly (3-methoxythiophene), poly (3-ethoxythiophene), poly (3-butoxythiophene), poly (3-hexyloxythiophene), poly (3-heptyloxy) Thiophene), poly (3-octyloxythiophene), poly (3-decyloxythiophene), poly (3-dodecyloxythiophene), poly (3-octadecyloxythiophene), poly (3,4-dihydroxythiophene), poly (3,4-dimethoxythiophene), poly (3,4-diethoxythiophene), poly (3,4-dipropoxythiophene), poly (3,4-dibutoxythiophene), poly (3,4-dihexyloxy) Thiophene), poly (3,4-diheptyloxythiophene), poly (3,4- Octyloxythiophene), poly (3,4-didecyloxythiophene), poly (3,4-didodecyloxythiophene), poly (3,4-ethylenedioxythiophene), poly (3,4-propylenedioxy) Thiophene), poly (3,4-butenedioxythiophene), poly (3-methyl-4-methoxythiophene), poly (3-methyl-4-ethoxythiophene), poly (3-carboxythiophene), poly (3 -Methyl-4-carboxythiophene), poly (3-methyl-4-carboxyethylthiophene), poly (3-methyl-4-carboxybutylthiophene), polyaniline, poly (2-methylaniline), poly (3-isobutyl Aniline), poly (2-aniline sulfonic acid), poly (3-aniline sulfonic acid) and the like. That.

  Among these π-conjugated conductive polymers, polypyrrole, polythiophene, poly (N-methylpyrrole), poly (3-methylthiophene), poly (3-methoxythiophene), poly (3,4-ethylenedioxythiophene) 1) or 2 types of (co) polymers are preferably used from the viewpoint of resistance and reactivity. Furthermore, polypyrrole and poly (3,4-ethylenedioxythiophene) are more preferable because they have higher conductivity and improved heat resistance. Among the alkyl groups, a methyl group is preferred because it does not adversely affect the conductivity. Furthermore, poly (3,4-ethylenedioxythiophene) doped with polystyrene sulfonic acid (abbreviated as PEDOT-PSS) has relatively high thermal stability and low polymerization degree, and thus has transparency after coating film formation. This is preferable because it is advantageous. The combination of PEDOT-PSS and ionizing radiation curable fluorinated acrylate has the advantage that the change in properties before and after the chemical resistance test is reduced.

Polymer dopant A polymer dopant refers to a polymer having an electron donating property or an electron accepting property. The polymer dopant is particularly preferably a polyanion having an anionic group in the molecule. Hereinafter, a dopant composed of a polyanion is referred to as a “polyanion dopant”. This polyanion dopant forms a complex by chemically oxidizing and doping a conductive polymer to form a salt.

  As the anion group of the polyanion dopant, chemical oxidation doping to the π-conjugated conductive polymer occurs, and the proton acid of the anion group is a functional group that can be bonded to any of a vinyl group, a glycidyl group, and a hydroxyl group. preferable. Specifically, a sulfuric acid group, a phosphoric acid group, a sulfonic acid group, a carboxyl group, a phospho group, and the like are preferable, and a sulfonic acid group and a carboxyl group are more preferable from the viewpoint of chemical oxidation doping.

  Examples of the polyanion dopant having a sulfonic acid group include polyvinyl sulfonic acid, polystyrene sulfonic acid, polyallyl sulfonic acid, polyacryl sulfonic acid, polymethacryl sulfonic acid, poly-2-acrylamido-2-methylpropane sulfonic acid, polyisoprene. A sulfonic acid etc. are mentioned. These homopolymers may be sufficient and 2 or more types of copolymers may be sufficient.

  Examples of the polyanion dopant having a carboxyl group include polyvinyl carboxylic acid, polystyrene carboxylic acid, polyallyl carboxylic acid, polyacryl carboxylic acid, polymethacryl carboxylic acid, poly-2-acrylamido-2-methylpropane carboxylic acid, and polyisoprene carboxylic acid. An acid, polyacrylic acid, etc. are mentioned. These homopolymers may be sufficient and 2 or more types of copolymers may be sufficient.

  The resin composition according to the best mode may contain a dopant other than the polymer dopant in order to further improve electrical conductivity and thermal stability. Examples of the dopant include halogen compounds, Lewis acids, proton acids, and the like. Specific examples include organic acids such as organic carboxylic acids and organic sulfonic acids, organic cyano compounds, and fullerene compounds.

  Examples of the halogen compound include chlorine, bromine, iodine, iodine chloride, iodine bromide, iodine fluoride, and the like. Examples of the protic acid include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, borofluoric acid, hydrofluoric acid, and perchloric acid, organic carboxylic acids, phenols, and organic sulfonic acids. Furthermore, examples of the organic carboxylic acid include formic acid, acetic acid, succinic acid, benzoic acid, phthalic acid, maleic acid, fumaric acid, malonic acid, tartaric acid, citric acid, lactic acid, succinic acid, monochloroacetic acid, dichloroacetic acid, and trichloroacetic acid. Trifluoroacetic acid, nitroacetic acid, triphenylacetic acid and the like. Examples of the organic sulfonic acid include alkylbenzene sulfonic acid, alkyl naphthalene sulfonic acid, alkyl naphthalene disulfonic acid, naphthalene sulfonic acid formalin polycondensate, melamine sulfonic acid formalin polycondensate, naphthalene disulfonic acid, naphthalene trisulfonic acid, dinaphthylmethane. Examples include disulfonic acid, anthraquinone sulfonic acid, anthraquinone disulfonic acid, anthracene sulfonic acid, and pyrene sulfonic acid. These metal salts can also be used. Examples of the organic cyano compound include dichlorodicyanobenzoquinone (DDQ) and tetracyanoquinodimethanetetracyanoazanaphthalene. Examples of the fullerene compound include hydrogenated fullerene, hydroxylated fullerene, carboxylated fullerene, and sulfonated fullerene.

  The π-conjugated conductive polymer according to the best mode includes a precursor monomer that forms a π-conjugated conductive polymer in a solvent, an appropriate oxidizing agent, an oxidation catalyst, and the polymer dopant (preferably a polyanion). It is preferable to produce by chemical oxidative polymerization in the presence of. Hereinafter, a polyanion dopant in a complex of a π-conjugated conductive polymer and a polymer dopant will be described as an example.

  During the formation of the composite, the main chain of the conductive polymer grows along the polyanion dopant because the anionic group of the polyanion dopant forms a salt with the conductive polymer along with the growth of the main chain of the conductive polymer. To do. Therefore, the obtained conductive polymer and polyanion dopant become a complex in which an infinite number of salts are formed. In this composite, one unit of anionic group forms a salt with respect to three units of the conductive polymer monomer, and several shortly grown conductive polymers form a salt along a long polyanion dopant. It is estimated that

  Examples of a method for forming a complex in which a conductive polymer and a polyanion dopant are combined include a method in which a monomer that forms a conductive polymer is chemically oxidatively polymerized in the presence of a polyanion dopant.

  The oxidizing agent and oxidation catalyst used for polymerizing the monomer in chemical oxidative polymerization may be any one that can oxidize the precursor monomer to obtain a π-conjugated conductive polymer. Peroxodisulfates such as ammonium disulfate, sodium peroxodisulfate, potassium peroxodisulfate, transition metal compounds such as ferric chloride, ferric sulfate, ferric nitrate, cupric chloride, boron trifluoride, chloride Examples thereof include metal halide compounds such as aluminum, metal oxides such as silver oxide and cesium oxide, peroxides such as hydrogen peroxide and ozone, organic peroxides such as benzoyl peroxide, and oxygen.

  Chemical oxidative polymerization may be performed in a solvent. The solvent used in that case is not particularly limited as long as it dissolves the polyanion dopant and the conductive polymer. For example, water, methanol, ethanol, propylene carbonate, cresol, phenol, xylenol, acetone, methyl ethyl ketone, Hexane, benzene, toluene, dioxane, diethyl ether, acetonitrile, benzonitrile, N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, hexamethylphosphoric triamide, 1,3-dimethyl Examples include 2-imidazolidine, dimethylimidazoline, ethyl acetate, 2-methyltetrahydrofuran, dioxane, dimethyl sulfoxide, sulfolane, and diphenyl sulfone. These solvents can be used as a single solvent or a mixture of two or more solvents as required.

  The ratio of the molecular weight per unit of the π-conjugated conductive polymer to the molecular weight per unit of the polymer dopant is preferably 1: 1 to 1: 5, more preferably 1: 1 to 1: 2. preferable.

The ionizing radiation curable fluorinated acrylate ionizing radiation curable resin is a polymerized or directly polymerized when irradiated with ionizing radiation such as ultraviolet rays, visible rays, infrared rays, electron beams, or indirectly by the action of an initiator. Monomers, oligomers, polymers, and the like having a curing reactive functional group that causes a reaction that causes a large molecule such as dimerization to proceed. Specific examples include radical polysynthetic monomers and oligomers having an ethylenically unsaturated bond such as a (meth) acryloyl group, a vinyl group, and an allyl group. The fluorinated acrylate refers to an acrylate containing a fluorine component in the molecule, and specifically includes an acrylate alkyl group replaced with a fluorinated alkyl group. Since the fluorinated acrylate is ionizing radiation curable, cross-linking between molecules occurs, so it has excellent chemical resistance and sufficient anti-fouling properties after saponification treatment. Cross-linking occurs between molecules. After curing, the fluorine component does not bleed out, and the effect of preventing the antistatic property from being impaired is exhibited. Examples of the ionizing radiation curable fluorinated acrylate include 2- (perfluorodecyl) ethyl methacrylate, 2- (perfluoro-7-methyloctyl) ethyl methacrylate, 3- (perfluoro-7-methyloctyl) -2- Hydroxypropyl methacrylate, 2- (perfluoro-9-methyldecyl) ethyl methacrylate, 3- (perfluoro-8-methyldecyl) -2-hydroxypropyl methacrylate, 3-perfluorooctyl-2-hydroxylpropyl acrylate, 2- (per Fluorodecyl) ethyl acrylate, 2- (perfluoro-9-methyldecyl) ethyl acrylate, pentadecafluorooctyl (meth) acrylate, unadecafluorohexyl (meth) acrylate, nonafluoropentyl (meth) ) Acrylate, heptafluorobutyl (meth) acrylate, octafluoropentyl (meth) acrylate, pentafluoropropyl (meth) acrylate, trifluoro (meth) acrylate, triisofluoroisopropyl (meth) acrylate, trifluoroethyl (meth) acrylate The following compounds (i) to (xxx) can be used. The following compounds all show the case of acrylate, and any acryloyl group in the formula can be changed to a methacryloyl group.

  In the compounds (i) to (xxxi), R in the following general formula (1) describes only a hydrogen atom, and one of the hydrogen atoms in the methylene group bonded to the carbonyl carbon is methyl. It can be changed on the basis.

  These can be used alone or in combination. Of the fluorinated acrylates, a fluorinated alkyl group-containing urethane acrylate having a urethane bond is preferred from the viewpoint of wear resistance, elongation and flexibility of the cured product. Of the fluorinated acrylates, polyfunctional fluorinated acrylates are preferred. Here, the polyfunctional fluorinated acrylate means one having 2 or more (preferably 3 or more, more preferably 4 or more) (meth) acryloyloxy groups.

Polyfunctional acrylate In the present invention, it is preferable to add a polyfunctional acrylate in order to impart hardness, adhesion to the substrate, and the like. The polyfunctional acrylate is a monomer, oligomer, or prepolymer having 3 (more preferably 4, more preferably 5) or more (meth) acryloyloxy groups in one molecule. Examples of such a composition include compounds in which the hydroxyl group of a polyhydric alcohol having 3 or more alcoholic hydroxyl groups in one molecule is an ester compound of 3 or more (meth) acrylic acids. Can do.

  Specific examples include pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, Dipentaerythritol hexa (meth) acrylate, trimethylolpropane tri (meth) acrylate, and the like can be used. These can be used 1 type or in mixture of 2 or more types.

  The use ratio of the polyfunctional acrylate is preferably 20 to 80% by weight, more preferably 30 to 70% by weight, based on the total amount of the constituent components of the optical functional layer. When the content of the polyfunctional acrylate is less than 20%, sufficient wear resistance may not be obtained.

Urethane acrylate The resin composition according to the best mode of the present invention preferably contains urethane acrylate.
The urethane acrylate is not particularly limited as long as the urethane acrylate monomer having a urethane bond portion and an acryloyl group is polymerized. Here, the number of acryloyl groups contained in the urethane acrylate monomer may be one or plural. Further, the number of urethane bond portions contained in the urethane acrylate monomer may be one or plural.

  Urethane acrylate is synthesized by reacting diisocyanate with a polyester or polyether polyol. This reaction yields urethanes with isocyanate end groups. More flexible. In contrast, aromatic urethane acrylates are harder and have better chemical resistance. The polyol backbone also plays an important role in determining the cure rate and the properties of the cured film. The flexibility of the polymer film is, for example, a function of the molecular weight and functionality of the polyol. The higher the diol molecular weight, the greater the flexibility.

（式中、Ｒ₁は水素原子またはＣＨ₃、Ｒ₂は多価アルコール残基、Ｘはイソシアネート残基、Ｙは多価アルコール残基を表す。ｋは１〜５の整数、ｌは１〜３の整数、ｍは１〜２の整数、ｎは１〜６の整数を表す。但し、ｋとｌ、ｋとｍとｎは同時に１ではない。） In the present invention, it is preferable to add urethane acrylate. In particular, the urethane (meth) acrylate compound represented by the following formulas (1) and (2) has adhesion to a substrate, abrasion resistance, chemical resistance. It is preferable because of its superiority. Hereinafter, these compounds will be described.

Wherein R ₁ is a hydrogen atom or CH ₃ , R ₂ is a polyhydric alcohol residue, X is an isocyanate residue, Y is a polyhydric alcohol residue, k is an integer of 1 to 5, and l is 1 to 1 3 is an integer, m is an integer of 1 to 2, and n is an integer of 1 to 6. However, k and l, and k, m, and n are not 1 at the same time.)

  The urethane (meth) acrylate compound of the formula (1) is a reaction product of a hydroxyl group-containing (meth) acrylate compound and an isocyanate compound, and is a compound having at least two (meth) acrylate groups. The urethane (meth) acrylate compound of the formula (2) is a reaction product of a hydroxyl group-containing (meth) acrylate compound, a polyisocyanate compound, and a polyol compound, and is a compound having at least two (meth) acrylate groups. . Moreover, as a method of obtaining the said urethane (meth) acrylate, any well-known method can be used.

  Examples of the hydroxyl group-containing (meth) acrylate compound include glycerin (meth) acrylate, trimethylol (meth) acrylate, pentaerythritol (meth) acrylate, glycerin di (meth) acrylate, trimethylolpropane di (meth) acrylate, pentaerythritol tri ( And (meth) acrylate, ditrimethylolpropane tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, and the like. These can be used alone or in combination.

  As isocyanate compounds, o-tolyl isocyanate, p-tolyl isocyanate, 4-diphenylmethane isocyanate, and polyisocyanates as 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4-diphenylmethane diisocyanate, m-xylyl. Diisocyanate, p-xylylene diisocyanate, tetramethylxylylene diisocyanate, biphenylene diisocyanate, 1,5-naphthylene diisocyanate, o-tolidine diisocyanate, hexamethylene diisocyanate, 4,4'-methylenebiscyclohexyl isocyanate, isophorone diisocyanate, trimethylhexa Methylene diisocyanate, 1,3- (isocyanatomethyl) cyclohexane, and this Burette product, may be mentioned polycondensation products such as isocyanurate product of. These can be used alone or in combination. Particularly preferable examples include tolylene diisocyanate, xylylene diisocyanate and hexamethylene diisocyanate nurate, isophorone diisocyanate nurate.

  Polyol compounds include ethylene glycol, propylene glycol, neopentyl glycol, 1,6-hexanediol, glycerin, trimethylolpropane, carboxylic acid-containing polyols and other aliphatic polyhydric alcohols, ethylene oxide and propylene oxide reactants of various bisphenols Aromatic polyhydric alcohols such as ethylene oxide and propylene oxide reactants of bisphenolfluorene, and also having a (meth) acryloyl group in the molecule as represented by formula (2) regardless of aliphatic or aromatic A polyol is mentioned. Particularly preferred are dimethylolpropionic acid, dimethylolbutanoic acid, bisphenoxyethanol fluorene and the like.

  These urethane acrylates can be used alone or in combination. Among the above urethane acrylates, polyfunctional urethane acrylates are preferable. Here, the polyfunctional urethane acrylate means one having 2 or more (preferably 3 or more, more preferably 4 or more) (meth) acryloyloxy groups.

  As specific examples, use of pentaerythritol tri (meth) acrylate hexamethylene diisocyanate urethane prepolymer, pentaerythritol tri (meth) acrylate toluene diisocyanate urethane prepolymer, pentaerythritol tri (meth) acrylate isophorone isocyanate urethane prepolymer, etc. Can do. These can be used 1 type or in mixture of 2 or more types.

  Since urethane acrylate has a high viscosity, the dispersibility of the π-conjugated conductive polymer can be improved, and this is preferable in terms of obtaining good conductivity.

  The proportion of urethane acrylate used is preferably 10 to 80% by weight, more preferably 30 to 70% by weight, based on the total amount of the constituent components of the optical functional layer. If the content of urethane acrylate is 10% or less, sufficient flexibility may not be obtained.

The ionizing radiation that cures the resin composition may be any of ultraviolet rays, visible rays, infrared rays, and electron beams. Further, these radiations may be polarized or non-polarized. In particular, ultraviolet rays are suitable from the viewpoints of equipment cost, safety, running cost, and the like. As the ultraviolet energy beam source, for example, a high-pressure mercury lamp, a halogen lamp, a xenon lamp, a metal halide lamp, a nitrogen laser, an electron beam accelerator, a radioactive element, and the like are preferable. The amount of irradiation with the energy radiation source of accumulative exposure at an ultraviolet wavelength of 365 nm, preferably in the range of ^{100~5,000mJ / cm 2, 300~3,000mJ / cm} 2 irradiation amount, of less than 100 mJ / cm ² Since the curing becomes insufficient, the hardness of the optical functional layer may be lowered. Moreover, when it exceeds 5,000 mJ / cm < ² >, an optical function layer will color and transparency will fall. When curing by ultraviolet irradiation, it is necessary to add a photopolymerization initiator. A conventionally well-known thing can be used as a photoinitiator. For example, benzoin and its alkyl ethers such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, N, N, N, N-tetramethyl-4,4′-diaminobenzophenone, benzylmethyl ketal; acetophenone, 3 -Acetophenones such as methylacetophenone, 4-chlorobenzophenone, 4,4'-dimethoxybenzophenone, 2,2-dimethoxy-2-phenylacetophenone, 1-hydroxycyclohexyl phenyl ketone; methylanthraquinone, 2-ethylanthraquinone Anthraquinones such as 2-amylanthraquinone; xanthone; thioxanthones such as thioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone; Ketals such as tophenone dimethyl ketal and benzyl dimethyl ketal; benzophenones such as benzophenone and 4,4-bismethylaminobenzophenone; and others, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropane-1- ON etc. can be illustrated. These can be used alone or as a mixture of two or more. The use amount of the photopolymerization initiator is preferably about 5% or less, more preferably 1 to 4% in terms of the total solid content ratio with respect to the radiation curable resin composition.

  A polymer resin can be added and used in the radiation-curable resin composition system as long as the polymerization and curing are not hindered. This polymer resin is a thermoplastic resin that is soluble in an organic solvent used in the optical functional layer coating described later, and specifically includes acrylic resins, alkyd resins, polyester resins, cellulose derivatives, and the like. The resin preferably has an acidic functional group such as a carboxyl group, a phosphoric acid group, or a sulfonic acid group.

  In addition, additives such as a leveling agent, a thickener, an antistatic agent, a filler, and an extender can be used. The leveling agent has a function of uniforming the tension on the surface of the coating film and correcting defects before forming the coating film, and a substance having lower interfacial tension and surface tension than the radiation curable resin composition is used.

  The optical functional layer is mainly composed of a cured product such as the above-described resin composition, but the formation method is to apply a paint composed of the resin composition and an organic solvent, volatilize the organic solvent, and then apply radiation ( For example, it is cured by electron beam or ultraviolet irradiation) or heat. As the organic solvent used here, it is necessary to select an organic solvent suitable for dissolving the resin composition. Specifically, in consideration of coating suitability such as wettability to a light-transmitting substrate, viscosity, and drying speed, an alcohol type, an ester type, a ketone type, an ether type, or an aromatic hydrocarbon is used alone or in combination. Solvents can be used. In particular, good conductivity can be obtained by selecting an organic solvent that can dissolve the π-conjugated conductive polymer and the polymer dopant satisfactorily. Examples of the organic solvent that can satisfactorily dissolve the π-conjugated conductive polymer and the polymer dopant include alcohol solvents such as methanol, ethanol, propanol, and isopropanol, ketone solvents such as acetone and methyl ethyl ketone, and diethyl ether. And ether solvents such as tetrahydrofuran, and ester solvents such as ethyl acetate. Among these, alcohol solvents and ketone solvents are preferable because they can dissolve the π-conjugated conductive polymer and polymer dopant well, and isopropanol and ethanol are particularly preferable.

  The thickness of the optical functional layer needs to be in the range of 3 to 50 μm, more preferably in the range of 5 to 30 μm, and still more preferably in the range of 7 to 20 μm. When the optical functional layer is thinner than 3 μm, the scratch resistance is deteriorated and interference unevenness appears remarkably, which is not preferable. When it is thicker than 50 μm, curling occurs due to curing shrinkage of the optical functional layer, micro cracks occur on the surface of the optical functional layer, adhesion to the translucent substrate is reduced, and light transmittance is further reduced. Or drop. And it becomes a cause of the cost increase by the increase in the amount of required coating materials accompanying the increase in film thickness.

  Translucent fine particles may be added to the optical functional layer. As the translucent fine particles, for example, organic translucent fine particles made of acrylic resin, polystyrene resin, styrene-acrylic copolymer, polyethylene resin, epoxy resin, silicone resin, polyvinylidene fluoride, polyfluoroethylene-based resin, Uses inorganic translucent fine particles (inorganic ultrafine particles) such as titanium oxide, silicon oxide (silica), aluminum oxide, zinc oxide, tin oxide, zirconium oxide, calcium oxide, indium oxide, antimony oxide, or a composite thereof. can do. In addition, these fine particles may be used individually by 1 type, and may use 2 or more types together. As the light-transmitting fine particles, it is preferable to use crosslinked organic light-transmitting fine particles and inorganic light-transmitting fine particles. Thereby, while improving the pencil hardness of the hard coat film (optical laminated body) after hardening, curling can be prevented. In addition, it is preferable to use silica as the light-transmitting fine particles because the refractive index of the optical functional layer is reduced and interference unevenness affecting the image quality of the display is reduced. Further, when silica is treated with a silicate-based material (for example, a silane coupling agent such as alkoxysilane having a functional group such as vinyl group, methacryl group, amino group, epoxy group, etc.), the silica is eluted during the saponification treatment. Can be prevented. The particle diameter of the translucent fine particles is preferably 1 to 100 nm, and more preferably 10 to 50 nm. When the particle size is smaller than 1 nm, the chemical resistance is lowered or the production cost of the particles is increased. When the thickness is larger than 100 nm, the optical characteristics such as a decrease in transmittance, an increase in haze, and a decrease in contrast occur. “Particle size” refers to the average value of the diameters of 100 particles measured with an electron microscope. Of the total number, the fine powder and coarse powder mixed in the production process of the fine particles are less than 5% (more preferably less than 1%). The blending amount of the translucent fine particles is preferably 5 to 70% by weight, and more preferably 10 to 50% by weight. When the blending amount is less than 5% by weight, the curl prevention effect and pencil hardness are lowered. When there are more compounding quantities than 70 weight%, scratch resistance will worsen. The translucent fine particles are preferably used in the form of a sol, which facilitates the formation of a paint and improves the dispersibility of the translucent fine particles in the paint. For example, alumina sol, silica sol, or the like can be used as the solubilized translucent fine particles.

  In the optical laminate of the present invention, the difference between the refractive index of the translucent substrate and the refractive index of the optical functional layer ([refractive index of the translucent substrate] − [refractive index of the optical functional layer]) is 0.10 or less. It is preferable that the refractive index of the optical functional layer be less than or equal to the refractive index of the translucent substrate. By controlling the refractive index difference to be in the above range, reflection of light on the surface can be suppressed to a low level.

  The refractive index can be controlled by appropriately incorporating inorganic translucent fine particles in the optical functional layer. The inorganic translucent fine particles have a function of adjusting the apparent refractive index of the optical functional layer according to the blending amount. As described above, it is preferable that the refractive index of the translucent substrate and the refractive index of the optical functional layer are approximate. Therefore, in the preparation of the optical functional layer forming material, the blending amount of the inorganic translucent fine particles is appropriately adjusted so that the difference between the refractive index of the translucent substrate and the refractive index of the optical functional layer is reduced. preferable. When the refractive index difference is large, a phenomenon called interference unevenness occurs in which reflected light of external light incident on the optical laminate exhibits a rainbow hue, and the display quality is deteriorated. In particular, three-wavelength fluorescent lamps have been greatly increased as fluorescent lamps in offices where an image display device including an optical laminate is frequently used. The three-wavelength fluorescent lamp has a characteristic that the emission intensity of a specific wavelength is strong and the object can be clearly seen, but it has been found that interference unevenness appears more significantly under this three-wavelength fluorescent lamp.

(Polarizing substrate)
In the present invention, a polarizing substrate may be laminated on a light transmitting substrate opposite to the optical functional layer. Here, the polarizing substrate uses a light-absorbing polarizing film that transmits only specific polarized light and absorbs other light, or a light reflective polarizing film that transmits only specific polarized light and reflects other light. I can do it. As the light-absorbing polarizing film, a film obtained by stretching polyvinyl alcohol, polyvinylene or the like can be used. For example, it can be obtained by uniaxially stretching polyvinyl alcohol adsorbed with iodine or a dye as a dichroic element. Polyvinyl alcohol (PVA) film. As the light reflection type polarizing film, for example, two kinds of polyester resins (PEN and PEN copolymer) having different refractive indexes in the stretching direction when stretched are alternately laminated and stretched by several hundreds of extrusion techniques. "DBEF" manufactured by 3M, or a cholesteric liquid crystal polymer layer and a quarter-wave plate are laminated, and light incident from the cholesteric liquid crystal polymer layer side is separated into two circularly polarized light beams that are opposite to each other. Nitto Denko's “Nipox” and Merck's “Transmax”, which are configured to convert circularly polarized light that is transmitted through the cholesteric liquid crystal polymer layer and converted into linearly polarized light by a quarter-wave plate, and the like. .

"Production method"
Examples of the method for forming the layer of the present invention include paint shakers, sand mills, pearl mills, ball mills, attritors, roll mills, high-speed impeller dispersers, jet mills, high-speed components in the above-described components and with water or organic solvents. Paint or ink dispersed by impact mill, ultrasonic disperser, etc., air doctor coating, blade coating, knife coating, reverse coating, transfer roll coating, gravure roll coating, kiss coating, cast coating, spray coating, slot orifice coating, Calendar coating, electrodeposition coating, dip coating, die coating, etc., relief printing such as flexographic printing, direct gravure printing, Separated into single layer or multiple layers on one or both sides of the transparent substrate directly or through other layers by printing such as intaglio printing such as offset gravure printing, flat printing such as offset printing, stencil printing such as screen printing, etc. In the case of containing a solvent, a method of forming by curing a coating layer or a printing layer by ultraviolet rays (in the case of ultraviolet rays, an initiator is necessary) or electron beam irradiation is given through a heat drying step. It is done. In the case of using an electron beam, energy of 50 to 1000 KeV emitted from various electron beam accelerators such as a Cockloft Walton type, a bandegraph type, a resonant transformation type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type is used. In the case of ultraviolet rays, ultraviolet rays emitted from a light source such as an ultra high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a xenon arc, or a metal halide lamp can be used.
The present invention may have the following configuration.
The present invention (i) is a resin composition comprising a π-conjugated conductive polymer, a polymer dopant, and an ionizing radiation curable fluorinated acrylate.
This invention (ii) is a resin composition of the said invention (i) characterized by containing urethane acrylate.
The present invention (iii) is an optical laminate in which an optical functional layer is provided on one side or both sides of a translucent substrate, directly or via another layer,
The optical functional layer is obtained by curing a resin composition containing a π-conjugated conductive polymer, a polymer dopant, and an ionizing radiation curable fluorinated acrylate. It is a laminate.
The present invention (iv) is the optical laminate according to the invention (iii), wherein the resin composition constituting the optical functional layer has a fluorine content of 500 to 500,000 ppm or less.
The present invention (v) is the optical laminate according to the invention (iii) or (iv), wherein the radiation-curable fluorinated acrylate has 3 or more functional groups.
The present invention (vi) is the optical laminate according to any one of the inventions (iii) to (v), wherein the ionizing radiation curable fluorinated acrylate is a fluorinated alkyl group-containing urethane acrylate.
According to this invention (i), there exists an effect that hardened | cured material expresses favorable antistatic property and antifouling property.
According to this invention (ii), there exists an effect that the adhesiveness of a hardened | cured material, abrasion resistance, and chemical resistance are excellent.
According to the present invention (iii), it has a one-layer structure, and has the effect of exhibiting good antistatic properties and antifouling properties while being low in cost.
According to this invention (iv), there exists an effect that scratch resistance, antifouling property, and chemical resistance improve.
According to the present invention (v), since cross-linking between molecules becomes denser, there is an effect of exhibiting higher chemical resistance.
According to this invention (vi), there exists an effect that it has higher abrasion resistance, elongation, and a softness | flexibility.

(Production Example 1) Synthesis of fluorinated acrylate solution A solution of 22.2 g (0.1 mol) of isophorone diisocyanate in 100 ml of MIBK (methyl isobutyl ketone) in a 500 ml reaction flask while performing air bubbling and pentaerythritol tri A solution of 59.6 g (0.20 mol) of acrylate in 50 ml of MIBK was added dropwise at 25 ° C. After completion of dropping, 0.3 g of dibutyltin dilaurate was added, and the mixture was further stirred with heating at 70 ° C. for 4 hours. After completion of the reaction, the reaction solution was washed with 100 ml of 5% hydrochloric acid. After separating the organic layer, the solvent was distilled off under reduced pressure at 40 ° C. or less to obtain 80.5 g of a colorless transparent viscous liquid urethane acrylate. Into a 200 ml reaction flask, 40.8 g (0.05 mol) of the prepared urethane acrylate, 64.2 g (0.15 mol) of perfluoroheptylethyl mercaptan, and 60 g of MIBK were added to make uniform. To this mixed solution, 1.0 g of triethylamine was gradually added at 25 ° C. After the addition was completed, the mixture was further stirred at 50 ° C. for 3 hours. After completion of the reaction, triethylamine is distilled off under reduced pressure using an evaporator under conditions of 50 ° C. or lower, and further dried with a vacuum pump, thereby containing a fluorinated alkyl group-containing urethane acrylate represented by Structural Formula 1, and an acryloyl group. A product A solution was obtained comprising a mixture further containing a compound different from the structural formula 1 in the position of the addition reaction between and perfluoroheptylethyl mercaptan.

(Production Example 2) Synthesis of polystyrene sulfonic acid 206 g of sodium styrene sulfonate was dissolved in 1000 ml of ion-exchanged water, and 1.14 g of ammonium persulfate oxidizing agent solution previously dissolved in 10 ml of water was stirred at 80 ° C. The solution was added dropwise for 20 minutes, and the solution was stirred for 12 hours. To the obtained sodium styrenesulfonate-containing solution, 1000 ml of sulfuric acid diluted to 10% by mass was added, about 1000 ml of the polystyrenesulfonic acid-containing solution was removed using an ultrafiltration method, and 2000 ml of ion-exchanged water was added to the remaining liquid. And about 2000 ml solution was removed using ultrafiltration. The above ultrafiltration operation was repeated three times. Further, about 2000 ml of ion-exchanged water was added to the obtained filtrate, and about 2000 ml of solution was removed using an ultrafiltration method. This ultrafiltration operation was repeated three times. Water in the obtained solution was removed under reduced pressure to obtain a colorless solid.

Production Example 3 Synthesis of Polystyrenesulfonic Acid Doped Poly (3,4-ethylenedioxythiophene) (PSS-PEDOT) 14.2 g of 3,4-ethylenedioxythiophene and 36.7 g of polystyrenesulfonic acid in 2000 ml The solution dissolved in ion-exchanged water was mixed at 20 ° C. While maintaining the mixed solution thus obtained at 20 ° C. and stirring, 29.64 g of ammonium persulfate dissolved in 200 ml of ion exchange water and 8.0 g of ferric sulfate oxidation catalyst solution were slowly added, The reaction was stirred for 3 hours. 2000 ml of ion-exchanged water was added to the resulting reaction solution, and about 2000 ml of solution was removed using an ultrafiltration method. This operation was repeated three times. Then, 200 ml of sulfuric acid diluted to 10% by mass and 2000 ml of ion-exchanged water are added to the resulting solution, and about 2000 ml of solution is removed using an ultrafiltration method, and 2000 ml of ion-exchanged water is added thereto. About 2000 ml of liquid was removed using an ultrafiltration method. This operation was repeated three times. Furthermore, 2000 ml of ion-exchanged water was added to the obtained solution, and about 2000 ml of the solution was removed using an ultrafiltration method. This operation was repeated 5 times to obtain an aqueous solution of 1.5% by mass of blue polystyrenesulfonic acid doped poly (3,4-ethylenedioxythiophene) (PSS-PEDOT).

(Production Example 4) Polystyrenesulfonic acid-doped poly (3,4-ethylenedioxythiophene) (PSS-PEDOT) in isopropyl alcohol dispersion B Production of liquid B Polystyrenesulfonic acid-doped poly (3,4-ethylenedioxythiophene) (PSS- 100 g of a 1.5 mass% aqueous dispersion of PEDOT) was placed in a flask, 100 g of isopropyl alcohol was added, and 0.5 ml of 10% hydrochloric acid was added with stirring. Thereafter, stirring was continued for 30 minutes, and then left for 1 hour. The obtained gel-like product was filtered under reduced pressure using a glass filter, and then 200 g of isopropyl alcohol was added, followed by vacuum filtration for 8 times. The solid content was removed from the glass filter in a state where the solid content was not completely dried, and the solid content weight was calculated from the decrease in heating weight to obtain 15 g of a wet blue solid having a solid content of 7.8%. After taking 15 g of isopropyl alcohol in a beaker and adding 0.4 g of an amine alkylene oxide adduct (trade name: Esomine C / 15, manufactured by Lion Akzo), 15 g of the obtained wet blue solid is added, and an emulsifying disperser (product) Name: TK Homo Disper (manufactured by Tokushu Kika Kogyo Co., Ltd.) was used for 10 minutes at a rotational speed of 4000 rpm to obtain a PSS-PEDOT isopropyl alcohol dispersion (solid content concentration 5%, water content 20% or less).

(Production Example 5) Fluorine Surfactant A fluorinated alkyl group-containing (meth) acrylate monomer (Structural Formula 2) 19 parts by weight in a glass flask equipped with a C solution synthesis stirrer, condenser and thermometer , 30 parts by weight of an ethylenically unsaturated monomer having a branched aliphatic hydrocarbon group (Structural Formula 3), 39 parts by weight of a monoacrylate compound having a side chain with a copolymer of ethylene oxide and propylene oxide having a molecular weight of 400 4 parts by weight of a compound in which both ends of tetraethylene glycol were methacrylated, 8 parts by weight of methyl methacrylate, and 350 parts by weight of isopropyl alcohol (hereinafter abbreviated as IPA) were charged with nitrogen gas. 1 part by weight of azobisisobutyronitrile (hereinafter abbreviated as AIBN) as a polymerization initiator and lauryl mercaptan 1 as a continuous transfer agent under reflux in an air stream After addition of parts, to complete the refluxing was polymerized for 7 hours at 85 ° C.. The molecular weight of this polymer in terms of polystyrene by GPC was Mn = 5,500. This copolymer is referred to as fluorinated surfactant C solution.

<Example 1>
A coating for an optical functional layer obtained by stirring the predetermined mixture shown in Table 1 containing the liquid A and the liquid B with a disper for 30 minutes is a transparent film having a film thickness of 80 μm and a total light transmittance of 92%. The substrate was coated on one side of TAC (Fuji Film; TD80UL) by a roll coating method (line speed; 20 m / min), pre-dried at 30-50 ° C. for 20 seconds, and then dried at 100 ° C. for 1 minute. The coating film was cured by performing ultraviolet irradiation (lamp; condensing high-pressure mercury lamp, lamp output: 120 W / cm, number of lamps: 4 lamps, irradiation distance: 20 cm) in a nitrogen atmosphere (nitrogen gas replacement). In this way, an optical laminate of Example 1 having an optical functional layer with a thickness of 6.4 μm was obtained.

<Example 2>
An optical laminate of Example 2 having a thickness of 5.7 μm was obtained in the same manner as in Example 1 except that the coating material for the optical functional layer was changed to the predetermined mixed solution shown in Table 1.

<Example 3>
An optical layered body of Example 3 having a thickness of 6.3 μm was obtained in the same manner as Example 1 except that the coating material for the optical function layer was changed to the predetermined mixed solution shown in Table 1.

<Example 4>
An optical laminate of Example 4 having a thickness of 5.8 μm was obtained in the same manner as in Example 1 except that the coating material for the optical functional layer was changed to the predetermined mixed solution shown in Table 1.

<Comparative Example 1>
An optical layered body of Comparative Example 1 having a thickness of 6.0 μm was obtained in the same manner as in Example 1 except that the coating material for the optical functional layer was changed to the predetermined mixed solution shown in Table 1.

<Comparative example 2>
An optical laminate of Comparative Example 2 having a thickness of 5.8 μm was obtained in the same manner as in Example 1 except that the coating material for the optical function layer was changed to the predetermined mixed solution shown in Table 1.

<Comparative Example 3>
An optical layered body of Comparative Example 3 having a thickness of 5.7 μm was obtained in the same manner as in Example 1 except that the coating material for the optical functional layer was changed to the predetermined mixed solution shown in Table 1.

<Comparative example 4>
The optical lamination of Comparative Example 4 having a thickness of 5.4 μm was performed in the same manner as in Example 1 except that the coating material for the optical functional layer was changed to the predetermined mixed solution shown in Table 1 and a non-radiation curable fluorinated acrylate was used. Got the body.

Haze value The haze value was measured using a haze meter (trade name: NDH2000, manufactured by Nippon Denshoku Co., Ltd.) according to JIS K7105. The criteria for determining the transparency (haze value) in Table 3 are: ◯ is less than 1%, Δ is less than 1-2%, and x is 2% or more.

Fluorine content The fluorine content was measured by a cylinder combustion-ion chromatography method. In the measurement, the solid component of the paint is burned together with the high-pressure oxygen in the cylinder to absorb the fluorine. F ⁻ (fluoride ion) in the absorption liquid was quantified by ion chromatography, and the fluorine (F) content in the solid component of the coating was calculated. The pretreatment was carried out according to the standard BN EN 14582.
Measuring device: Ion chromatograph QIC (manufactured by Dionex)

Surface resistance value The surface resistance value was measured using a high resistivity meter (trade name: Hiresta-UP, manufactured by Mitsubishi Chemical Corporation) in accordance with JIS K6911. The measurement was carried out under conditions of 20 ° C. and 65% RH after conditioning the sample for 1 hour in an environment of 20 ° C. and 65% RH. The measurement was performed with an applied voltage of 250 V and an application time of 10 seconds. A surface resistance value of less than 1E + 11 Ω / □ was evaluated as ◯, 1E + 11 Ω / □ or more and less than 1E + 12Ω / □ as Δ, and 1E + 12Ω / □ or more as x.

Water contact angle (θ / 2 method)
First, the contact angle of water on the optical functional layer surface was measured. Next, the contact angle of water on the surface of the saponified optical functional layer was measured. The contact angle of water was measured using a contact angle meter (trade name; Elma G-1 type contact angle meter, manufactured by Elma) in accordance with JIS R3257 (method for testing the wettability of the substrate glass surface).
The saponification process of an optical laminated body follows the following procedures.
(1) Immerse in a 6% sodium hydroxide aqueous solution at 55 ° C. for 2 minutes.
(2) Wash with water for 30 seconds.
(3) Immerse in 0.1 N sulfuric acid at 35 ° C. for 30 seconds.
(4) Wash with water for 30 seconds.
(5) Hot air drying at 120 ° C. for 1 minute.
If the value of the contact angle is large, the water repellent effect is improved, and the chemical resistance, abrasion resistance and antifouling property are improved. The contact angle before saponification treatment is 90 ° or more, preferably 100 ° or more, and the contact angle after saponification treatment is 70 ° or more, preferably 80 ° or more. Here, the contact angle of water after saponification is 85 ° or more, the contact angle of water after saponification treatment is 70 ° or more and less than 85 °, and the contact angle of water after saponification treatment is less than 70 °. Was marked with x.

Antifouling property Mackey (registered trademark) test Draw a 3 cm long line with an oil-based pen (trade name; McKee (registered trademark), manufactured by ZEBRA) on the optical functional layer of the optical laminate produced. Evaluation was carried out by a method of wiping with a wiper (product number; FF-390C, manufactured by Kuraray Laflex Co., Ltd.). After rubbing 20 times with a load of 500 g / cm ² , the case where it was completely wiped was indicated as “◯”, the case where there was a part that could not be wiped was indicated as “△”, and the case where it was not wiped out was indicated as “X”.

Claims (6)

containing a π-conjugated conductive polymer, a polymer dopant, an ionizing radiation curable fluorinated acrylate, and a polyfunctional urethane acrylate different from the ionizing radiation curable fluorinated acrylate,
The ionizing radiation curable fluorinated acrylate is a fluorinated alkyl group-containing urethane acrylate,
The amount of the π-conjugated conductive polymer is 0.5 to 5.0% by weight based on the total weight of the solid component,
The ratio of the π-conjugated conductive polymer to the polymer dopant is such that the polymer dopant component: π-conjugated conductive polymer component is in the range of 5:95 to 99: 1 as a mass ratio.
The blending amount of the ionizing radiation curable fluorinated acrylate is 0.05 to 50% by weight based on the total weight of the solid component,
The use ratio of the polyfunctional urethane acrylate is 10 to 80% by weight based on the total weight of the solid component.   The resin composition according to claim 1, comprising inorganic translucent fine particles.   The resin composition according to claim 1, comprising organic light-transmitting fine particles. An optical laminate in which an optical functional layer is provided on one or both surfaces of a light-transmitting substrate, directly or via another layer,
An optical layered body, wherein the optical functional layer is obtained by curing the resin composition according to any one of claims 1 to 3.   The optical laminate according to claim 4, wherein the resin composition constituting the optical functional layer has a fluorine content of 500 to 500,000 ppm or less.   6. The optical laminate according to claim 4, wherein the radiation-curable fluorinated acrylate has 3 or more functional groups.