JP2013245289A - Anti-reflection coating composition and anti-reflection film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-reflection coating composition capable of obtaining coated membrane having an anti-fouling property and scratch resistance.SOLUTION: A composition is obtained by reacting a polymer (P1) obtained by copolymerizing (I) a low refractive index-making agent, (II) an active energy beam-curable compound, (A) a polymerizable unsaturated monomer having a fluoroalkyl group, and (B1) a polymerizable unsaturated monomer having an adamantyl group having (b1) a reactive functional group as essential monomer components with (C) a compound having (c) a functional group having reactivity with (b1) the functional group, and a polymerizable unsaturated group, or includes (III) a polymerizable resin obtained by reacting (P2) a polymer obtained by copolymerizing the monomer (A), the monomer (B1), or (B2) a polymerizable unsaturated monomer having the adamantyl group without having (b1) and (B3) a polymerizable unsaturate monomer having (b3) a reactive functional group as essential monomer components, with a compound (C).

Description

  The present invention relates to an antireflection coating composition capable of obtaining a coating film having excellent antifouling properties and scratch resistance, and an antireflection film using the antireflection coating composition.

  The surface layer of the polarizing plate, which is the outermost surface of the liquid crystal display, has an anti-glare and anti-reflective coating such as AG, AG / LR, and Clear / LR. Antifouling properties such as fingerprint resistance are required. Here, the fingerprint resistance means that the fingerprint is difficult to adhere to the article, or that the fingerprint can be easily wiped off even if the fingerprint is attached to the article. Among the coatings having antiglare properties and antireflection properties, clear / LR is excellent from the viewpoint of transparency of the coating film.

  Currently, many polarizing plates in mass production for liquid crystal display devices, in particular, are made by stretching and adsorbing dichroic materials such as iodine and dichroic dyes onto a base film made of polyvinyl alcohol film. A film in which an optically transparent protective film having mechanical strength is bonded to both surfaces or one surface of an oriented polarizing film is used. And as said protective film, a triacetyl cellulose (TAC) film is normally used. And as for the coating film which has the said anti-glare property and anti-reflective property, for example, a clear / LR layer is dozens to several on the coating-film layer (base layer) about 10 micrometers thick formed on the TAC film. It is formed as a coating film having a thickness of about 100 nm.

In order to adhere TAC to the polarizing film, it is necessary to saponify the surface of the TAC film with caustic alkali or the like and to hydrolyze a part or most of —OCOCH ₃ groups to —OH which is a hydrophilic group. . To form a coating layer having anti-glare and antireflection properties on the TAC film and to saponify it, 1. Saponify the TAC film and then form the two coating layers on one side of the film. There are methods such as saponification after forming the two coating layers on one side of the TAC film, but usually from the viewpoint of production efficiency of the polarizing plate. The way is done.

  2. In this method, in order to protect the coating layer from a saponifying agent such as caustic when the saponification treatment is performed, a method of protecting the coating layer with a protective film is known. However, in recent years, in order to improve production efficiency and reduce costs, there is a need for a coating layer that does not deteriorate the performance of the coating film even if it is exposed to the saponifying agent without protecting the coating layer with a protective film.

  A coating film having antiglare property and antireflection property is required to have hard coat performance, that is, scratch resistance on the surface, in addition to antireflection performance and antifouling performance. In particular, the LR layer has a film thickness of only about several tens to several hundreds of nanometers, and stronger scratch resistance is required. As a method for improving the scratch resistance of the LR layer, a method using a hard coat material containing a polyfunctional monomer such as a polyfunctional (meth) acrylate is known. However, when this hard coat material is used, an LR layer having a surface hardness of the cured coating film improved to some extent can be obtained, but the scratch resistance is insufficient.

  As a hard coat material with improved scratch resistance, a fluorine atom-containing polymerizable resin having a fluorinated alkyl group, an adamantyl group, and a polymerizable unsaturated group derived from vinyl alcohol is disclosed (for example, see Patent Document 1). )

  In order to obtain the fluorine atom-containing polymerizable resin disclosed in Patent Document 1, a copolymer having vinyl alcohol as a monomer unit is used as a copolymer before adding an acryloyl group which is a polymerizable unsaturated group. However, since vinyl alcohol cannot be present as a monomer, after copolymerizing vinyl carboxylate such as vinyl acetate and generating a hydroxyl group by hydrolysis, (meth) acryloyl group-containing monomer and Need to be copolymerized. However, a copolymer of vinyl carboxylate is extremely difficult to copolymerize with a (meth) acryloyl group-containing monomer, and prevents hydrolysis reaction of other copolymerizable monomer units to ester groups during the hydrolysis. Is extremely difficult. Therefore, although described in Patent Document 1, the fluorine atom-containing polymerizable resin cannot be practically obtained.

  Therefore, there has been a demand for an antireflective coating composition that can provide an antireflection coating having antifouling properties and scratch resistance even after saponification treatment (strong alkali treatment).

JP 2006-206717 A

  The problem to be solved by the present invention is an antireflection coating composition capable of obtaining a coating film having excellent antifouling properties and scratch resistance even after saponification treatment, and reflection using the antireflection coating composition It is to provide a prevention film.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have made a polymerizable composition containing a low refractive index agent (I) and an active energy ray-curable compound (II), a polymer having a fluorinated alkyl group. Of the polymerizable unsaturated monomer (A) and the polymerizable unsaturated monomer (B1) having an adamantyl group having a reactive functional group (b1) as essential monomer components. The compound (P1) is obtained by reacting the functional group (c) having a reactivity with the functional group (b1) and the compound (C) having a polymerizable unsaturated group, or a fluorinated alkyl group A polymerizable unsaturated monomer (A) having a reactive functional group (b1), a polymerizable unsaturated monomer (B1) having a reactive functional group (b1), or an adamantyl group not having a reactive functional group (b1) Polymerizable unsaturated monomer (B2) and reactive functionality The functional group (b1) or the functional group (b3) is added to the polymer (P2) obtained by copolymerizing the polymerizable unsaturated monomer (B3) having (b3) as an essential monomer component. A cured coating obtained by adding a polymerizable resin (III) obtained by reacting one or more compounds (C) having a functional group (c) and a polymerizable unsaturated group having reactivity with respect to It is possible to impart excellent antifouling property and scratch resistance to the film surface, and further find that the antifouling property and scratch resistance do not decrease even if the cured coating film surface is treated with a chemical such as strong alkali, The present invention has been completed.

  That is, the present invention relates to a low refractive index agent (I), an active energy ray-curable compound (II), a polymerizable unsaturated monomer (A) having a fluorinated alkyl group, and a reactive functional group (b1). A polymer (P1) obtained by copolymerizing a polymerizable unsaturated monomer (B1) having an adamantyl group having an essential monomer component with reactivity to the functional group (b1). A polymerizable unsaturated monomer (A) obtained by reacting a functional group (c) having a polymerizable unsaturated group and a compound (C) having a polymerizable unsaturated group, or a reactive functional group ( a polymerizable unsaturated monomer (B1) having an adamantyl group having b1) or a polymerizable unsaturated monomer (B2) having an adamantyl group not having a reactive functional group (b1), and a reactive functional group ( a polymerizable unsaturated monomer (B3) having b3) The polymer (P2) obtained by copolymerization as a monomer component has a functional group (c) having a reactivity with the functional group (b1) or the functional group (b3) and a polymerizable unsaturated group. An antireflection coating composition comprising a polymerizable resin (III) other than the active energy ray-curable compound (II) obtained by reacting at least one compound (C) is provided. .

  The present invention also provides an antireflection film having a cured coating film of the antireflection coating composition.

  Since the cured coating film of the antireflection coating composition of the present invention has excellent antifouling properties and scratch resistance even after saponification treatment, an antireflection film having extremely excellent antifouling properties and scratch resistance is obtained. Can be obtained. Further, an antireflection film having very excellent antifouling properties and scratch resistance can be obtained even by a process that does not involve saponification. Accordingly, the antireflection film using the antireflection coating composition of the present invention can be suitably used as the outermost film of an image display device such as a liquid crystal display (LCD), a plasma display (PDP), or an organic EL display. .

  The low refractive index agent (I) used in the present invention preferably has a refractive index of 1.44 or less, more preferably 1.40 or less. The low refractive index agent may be either inorganic or organic.

  Examples of the inorganic low refractive index agent (I) include fine particles having voids and fine metal fluoride particles. Examples of the fine particles having voids include those in which fine particles are filled with gas, and those having a porous structure containing gas inside. Specific examples include hollow silica fine particles and silica fine particles having a nanoporous structure. Examples of the metal fluoride fine particles include magnesium fluoride, aluminum fluoride, calcium fluoride, and lithium fluoride.

  Among these inorganic low refractive index agents (I), hollow silica fine particles are preferable. Further, these inorganic low refractive index agents (I) can be used alone or in combination of two or more. As these inorganic low refractive index agents (I), any of crystalline, sol, and gel can be used.

  The shape of the silica fine particles may be spherical, chain-like, needle-like, plate-like, scale-like, rod-like, fiber-like, or indefinite shape, and among these, spherical or needle-like is preferable. Moreover, when the shape is spherical, the average particle diameter of the silica fine particles is preferably 5 to 100 nm, more preferably 20 to 80 nm, and further preferably 40 to 70 nm. When the average particle diameter of the spherical fine particles is within this range, excellent transparency can be imparted to the low refractive index layer.

  On the other hand, examples of the organic low refractive index agent (I) include fine particles having voids and fluorine-containing copolymers. The fine particles having voids are preferably hollow polymer fine particles. The hollow polymer fine particles are prepared by, in an aqueous dispersion stabilizer solution, (1) at least one crosslinkable monomer, (2) a polymerization initiator, (3) a polymer obtained from at least one crosslinkable monomer, or at least one. A mixture of a copolymer of a kind of crosslinkable monomer and at least one kind of monofunctional monomer, and a poorly water-soluble solvent having low compatibility with the above (1) to (3) is dispersed and suspended. It can manufacture by performing superposition | polymerization. Here, the crosslinkable monomer is one having two or more polymerizable groups, and the monofunctional monomer is one having one polymerizable group.

  The fluorine-containing copolymer used as the organic low refractive index agent (I) is a resin having a low refractive index because the resin contains many fluorine atoms. Examples of the fluorine-containing copolymer include a copolymer using vinylidene fluoride and hexafluoropropylene as monomer raw materials.

  The ratio of each monomer that is a raw material of the fluorinated copolymer is preferably 30 to 90% by mass, more preferably 40 to 80% by mass, further preferably 40 to 70% by mass, and hexafluorofluorovinylidene fluoride. The proportion of propylene is preferably 5 to 50% by mass, more preferably 10 to 50% by mass, and still more preferably 15 to 45%. As this other monomer, tetrafluoroethylene may be used in the range of 0 to 40% by mass.

  The fluorine-containing copolymer includes, as monomer components of other raw materials, fluoroethylene, trifluoroethylene, chlorotrifluoroethylene, 1,2-dichloro-1,2-difluoroethylene, 2-bromo-3,3, 3-trifluoroethylene, 3-bromo-3,3-difluoropropylene, 3,3,3-trifluoropropylene, 1,1,2-trichloro-3,3,3-trifluoropropylene, α-trifluoromethacrylic A polymerizable monomer having a fluorine atom such as an acid can be used. These other raw material monomer components are preferably used in the raw material monomer of the fluorine-containing copolymer in an amount of 20% by mass or less.

  The fluorine content in the fluorine-containing copolymer is preferably 60 to 70% by mass, more preferably 62 to 70% by mass, and further preferably 64 to 68% by mass. When the fluorine content of the fluorine-containing copolymer is within this range, the solubility in a solvent is good, and excellent adhesion to various substrates is exhibited. High transparency, low refractive index, excellent machine A thin film having sufficient strength can be formed.

  The molecular weight of the fluorine-containing copolymer is preferably 5,000 to 200,000, more preferably 10,000 to 100,000, in terms of polystyrene-equivalent number average molecular weight. When the molecular weight of the fluorinated copolymer is within this range, the viscosity of the resulting resin is in a range having excellent coating properties. The refractive index of the fluorinated copolymer itself is preferably 1.45 or less, more preferably 1.42 or less, and even more preferably 1.40 or less.

  The active energy ray-curable compound (II) used in the present invention is not particularly limited as long as it is a compound having a photopolymerizable functional group that can be polymerized or crosslinked by irradiation with active energy rays such as ultraviolet rays. it can.

  Examples of the active energy ray-curable compound (II) include an active energy ray-curable monomer (II-1). Examples of the monomer (II-1) include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and polyethylene having a number average molecular weight in the range of 150 to 1,000. Glycol di (meth) acrylate, propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, polypropylene glycol di (meth) having a number average molecular weight in the range of 150 to 1000 Acrylate, neopentyl glycol di (meth) acrylate, 1,3-butanediol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate Hydroxypivalate ester neopentyl glycol di (meth) acrylate, bisphenol A di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa ( (Meth) acrylate, pentaerythritol tetra (meth) acrylate, trimethylolpropane di (meth) acrylate, dipentaerythritol penta (meth) acrylate, dicyclopentenyl (meth) acrylate, methyl (meth) acrylate, propyl ( (Meth) acrylate, butyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, octyl (meth) acrylate, decyl (meth) acrylate, Aliphatic alkyl (meth) acrylates such as sodecyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, isostearyl (meth) acrylate, glycerol (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 3 -Chloro-2-hydroxypropyl (meth) acrylate, glycidyl (meth) acrylate, allyl (meth) acrylate, 2-butoxyethyl (meth) acrylate, 2- (diethylamino) ethyl (meth) acrylate, 2- (dimethylamino) Ethyl (meth) acrylate, γ- (meth) acryloxypropyltrimethoxysilane, 2-methoxyethyl (meth) acrylate, methoxydiethylene glycol (meth) acrylate, methoxydipropylene glyco (Meth) acrylate, nonylphenoxypolyethylene glycol (meth) acrylate, nonylphenoxypolypropylene glycol (meth) acrylate, phenoxyethyl (meth) acrylate, phenoxydipropylene glycol (meth) acrylate, phenoxypolypropylene glycol (meth) acrylate, polybutadiene ( (Meth) acrylate, polyethylene glycol-polypropylene glycol (meth) acrylate, polyethylene glycol-polybutylene glycol (meth) acrylate, polystyrylethyl (meth) acrylate, benzyl (meth) acrylate, cyclohexyl (meth) acrylate, dicyclopentanyl ( (Meth) acrylate, dicyclopentenyl (meth) acrylate, isoborni (Meth) acrylate, methoxylated tricyclodecanyloxy triene (meth) acrylate, phenyl (meth) acrylate.

  Among these, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, pentaerythritol tetra ( A trifunctional or higher polyfunctional (meth) acrylate such as (meth) acrylate is preferred. These active energy ray-curable monomers (II-1) can be used alone or in combination of two or more.

  In the present invention, “(meth) acrylate” refers to one or both of methacrylate and acrylate, and “(meth) acryloyl group” refers to one or both of methacryloyl group and acryloyl group. “Acrylic acid” refers to one or both of methacrylic acid and acrylic acid.

  Moreover, active energy ray-curable resin (II-2) can also be used as the active energy ray-curable compound (II). Examples of the active energy ray-curable resin (II-2) include urethane (meth) acrylate resins, unsaturated polyester resins, epoxy (meth) acrylate resins, polyester (meth) acrylate resins, and acrylic (meth) acrylate resins. However, in the present invention, a urethane (meth) acrylate resin is particularly preferable from the viewpoint of transparency and low shrinkage.

  The urethane (meth) acrylate resin used here is a resin having a urethane bond and a (meth) acryloyl group obtained by reacting an aliphatic polyisocyanate compound or an aromatic polyisocyanate compound with a (meth) acrylate compound having a hydroxyl group. Is mentioned.

  Examples of the aliphatic polyisocyanate compound include tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, heptamethylene diisocyanate, octamethylene diisocyanate, decamethylene diisocyanate, 2-methyl-1,5-pentane diisocyanate, 3-methyl- 1,5-pentane diisocyanate, dodecamethylene diisocyanate, 2-methylpentamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, isophorone diisocyanate, norbornane diisocyanate, hydrogenated diphenylmethane diisocyanate , Hydrogenated tolylene diisocyanate, hydrogenated xylile Examples include diisocyanate, hydrogenated tetramethylxylylene diisocyanate, cyclohexyl diisocyanate, and the aromatic polyisocyanate compound includes tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, xylylene diisocyanate, 1,5-naphthalene diisocyanate, Examples include toridine diisocyanate and p-phenylene diisocyanate.

  On the other hand, examples of the acrylate compound having a hydroxyl group include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 1, Monovalent dihydric alcohols such as 5-pentanediol mono (meth) acrylate, 1,6-hexanediol mono (meth) acrylate, neopentyl glycol mono (meth) acrylate, and hydroxypivalate neopentyl glycol mono (meth) acrylate ( Meth) acrylate; trimethylolpropane di (meth) acrylate, ethoxylated trimethylolpropane (meth) acrylate, propoxylated trimethylolpropane di (meth) acrylate, glycerin di (meth) acrylate Mono- or di (meth) acrylates of trivalent alcohols such as relate, bis (2- (meth) acryloyloxyethyl) hydroxyethyl isocyanurate, or hydroxyl groups obtained by modifying some of these alcoholic hydroxyl groups with ε-caprolactone Mono- and di (meth) acrylates having a monofunctional hydroxyl group and tri- or more functional (meth) acryloyl such as pentaerythritol tri (meth) acrylate, ditrimethylolpropane tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, etc. A compound having a group, or a polyfunctional (meth) acrylate having a hydroxyl group obtained by modifying the compound with ε-caprolactone; dipropylene glycol mono (meth) acrylate, diethylene glycol mono (meth) acrylate, poly (Meth) acrylate compounds having an oxyalkylene chain such as propylene glycol mono (meth) acrylate and polyethylene glycol mono (meth) acrylate; polyethylene glycol-polypropylene glycol mono (meth) acrylate, polyoxybutylene-polyoxypropylene mono (meth) (Meth) acrylate compounds having a block structure oxyalkylene chain such as acrylate; random structures such as poly (ethylene glycol-tetramethylene glycol) mono (meth) acrylate and poly (propylene glycol-tetramethylene glycol) mono (meth) acrylate And (meth) acrylate compounds having an oxyalkylene chain.

  The reaction between the aliphatic polyisocyanate compound or the aromatic polyisocyanate compound and the acrylate compound having a hydroxyl group can be performed by a conventional method in the presence of a urethanization catalyst. Specific examples of urethanization catalysts that can be used here include amines such as pyridine, pyrrole, triethylamine, diethylamine, and dibutylamine, phosphines such as triphenylphosphine and triethylphosphine, dibutyltin dilaurate, octyltin trilaurate, and octyl. Examples thereof include organotin compounds such as tin diacetate, dibutyltin diacetate, and tin octylate, and organometallic compounds such as zinc octylate.

  Among these urethane acrylate resins, those obtained by reacting an aliphatic polyisocyanate compound with a (meth) acrylate compound having a hydroxyl group are excellent in transparency of the cured coating film and have good sensitivity to active energy rays. It is preferable from the viewpoint of excellent curability.

  Next, the unsaturated polyester resin is a curable resin obtained by polycondensation of α, β-unsaturated dibasic acid or acid anhydride thereof, aromatic saturated dibasic acid or acid anhydride thereof, and glycols. The α, β-unsaturated dibasic acid or its acid anhydride includes maleic acid, maleic anhydride, fumaric acid, itaconic acid, citraconic acid, chloromaleic acid, and esters thereof. As aromatic saturated dibasic acid or acid anhydride thereof, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, nitrophthalic acid, tetrahydrophthalic anhydride, endomethylenetetrahydrophthalic anhydride, halogenated phthalic anhydride and these Examples include esters. Examples of the aliphatic or alicyclic saturated dibasic acid include oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, glutaric acid, hexahydrophthalic anhydride, and esters thereof. As glycols, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 2-methylpropane-1,3-diol, neopentyl glycol, triethylene glycol, Examples include tetraethylene glycol, 1,5-pentanediol, 1,6-hexanediol, bisphenol A, hydrogenated bisphenol A, ethylene glycol carbonate, 2,2-di- (4-hydroxypropoxydiphenyl) propane, and others. In addition, oxides such as ethylene oxide and propylene oxide can be used in the same manner.

  Next, as an epoxy vinyl ester resin, (meth) acrylic acid is reacted with an epoxy group of an epoxy resin such as a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a phenol novolac type epoxy resin, or a cresol novolak type epoxy resin. What is obtained is mentioned. These active energy ray-curable resins (B-2) can be used alone or in combination of two or more.

  The mass ratio between the low refractive index agent (I) and the active energy ray-curable compound (II) is preferably in the range of (I) :( II) = 30: 70 to 90:10, 40:60 to 80: The range of 20 is more preferable, and the range of 50:50 to 70:30 is more preferable.

  The polymerizable resin (III) used in the present invention includes a polymerizable unsaturated monomer (A) having a fluorinated alkyl group and a polymerizable unsaturated monomer having an adamantyl group having a reactive functional group (b1). The polymer (P1) obtained by copolymerizing (B1) as an essential monomer component with a functional group (c) and a polymerizable unsaturated group reactive to the functional group (b1). A polymerizable unsaturated monomer obtained by reacting a compound (C) having a fluorinated alkyl group or having an adamantyl group having a reactive functional group (b1). A polymerizable unsaturated monomer (B2) having an adamantyl group having no monomer (B1) or a reactive functional group (b1), and a polymerizable unsaturated monomer (B3) having a reactive functional group (b3) ) As an essential monomer component The body (P2) is reacted with the functional group (b1) or the functional group (c) having reactivity with the functional group (b3) and one or more compounds (C) having a polymerizable unsaturated group. Is obtained.

  As the fluorinated alkyl group in the polymerizable resin (III), those having 4 to 6 carbon atoms are preferable because of a good balance of surface segregation, water and oil repellency, and environmental load reduction, and the number of carbon atoms is 6 is more preferable. Moreover, as content rate of the fluorinated alkyl group in polymeric resin (III), 3-30 mass% is compatible with other resin, surface segregation property, and water and oil repellency to hardened | cured material surface are favorable. Therefore, 5 to 25% by mass is more preferable. The content of adamantane (a structure consisting of 10 carbon atoms having an adamantane structure and a hydrogen atom added thereto) is preferably 5 to 40% by mass because the hardness of the cured product is good, and 10 to 35% by mass. Is more preferable.

  Moreover, the equivalent of the polymerizable unsaturated group in the polymerizable resin (III) is 200 to 3,500 g / eq. Because a cured coating film having excellent wear resistance is obtained. The range of 250 to 2,000 g / eq. The range of 300-1500 g / eq. Is more preferable, 400-1,000 g / eq. The range of is particularly preferable.

  The polymerizable unsaturated monomer (A) used for obtaining the polymerizable resin (III) is a monomer having a fluorinated alkyl group. In the present invention, the fluorinated alkyl group includes those having one or more carbon-carbon double bonds in the skeleton of the fluorinated alkyl group. The polymerizable unsaturated group possessed by the monomer (A) is preferably a carbon-carbon unsaturated double bond having radical polymerizability, and examples thereof include a (meth) acryloyl group, a vinyl group, and a maleimide group. Among these, (meth) acryloyl is easy because of the availability of raw materials, the ease of controlling the compatibility with each compounding component in the active energy ray-curable composition described later, or the good polymerization reactivity. Groups are preferred.

  Examples of the polymerizable unsaturated monomer (A) having a fluorinated alkyl group include those represented by the following general formula (1).

（上記一般式（１）中、Ｒは水素原子又はメチル基を表し、Ｌは、下記式（Ｌ−１）〜（Ｌ−１０）のいずれか１つの基を表し、Ｒｆは下記式（Ｒｆ−１）〜（Ｒｆ−７）のいずれか１つの基を表す。）

(In the general formula (1), R represents a hydrogen atom or a methyl group, L represents any one of the following formulas (L-1) to (L-10), and Rf represents the following formula (Rf -1) to any one of (Rf-7).

  N in the above formulas (L-1), (L-3), (L-5), (L-6) and (L-7) represents an integer of 1 to 8. M in the above formulas (L-8), (L-9) and (L-10) represents an integer of 1 to 8, and n represents an integer of 0 to 8. Rf ″ in the above formulas (L-6) and (L-7) represents any one of the following formulas (Rf-1) to (Rf-7).

  N in the above formulas (Rf-1) to (Rf-4) represents an integer of 4 to 6. M in the said formula (Rf-5) is an integer of 1-5, n is an integer of 0-4, and the sum total of m and n is 4-5. M in the above formula (Rf-6) is an integer of 0 to 4, n is an integer of 1 to 4, p is an integer of 0 to 4, and the total of m, n, and p is 4 to 4 5.

  Moreover, the following monomers (A-1)-(A-11) etc. are mentioned as a specific example of the said monomer (A). These monomers (A) can be used alone or in combination of two or more.

（式中のｎは３〜５の整数を表す。）

(In the formula, n represents an integer of 3 to 5.)

  The polymerizable unsaturated monomer (B1) used in the present invention has an adamantyl group having a reactive functional group (b1). The adamantyl group is an organic group having the following adamantane structure.

  Examples of the reactive functional group (b1) possessed by the adamantyl group of the monomer (B1) include a hydroxyl group, an isocyanate group, an epoxy group, a carboxyl group, a carboxylic acid halide group, and an acid anhydride group. The polymerizable unsaturated group possessed by the monomer (B1) is preferably a carbon-carbon unsaturated double bond having radical polymerizability, more specifically, a vinyl group, a (meth) acryloyl group, a maleimide group, or the like. (Meth) acryloyl group is more preferable from the viewpoint of easy polymerization. These monomers (B1) can be used alone or in combination of two or more different reactive functional groups (b1) and polymerizable unsaturated groups.

  As said monomer (B1) which has a (meth) acryloyl group as a polymerizable unsaturated group, the compound represented by the following general formula (B1-1) is mentioned, for example.

（式中、Ｌは前記反応性官能基（ｂ１）を表し、Ｘ及びＹは２価の有機基又は単結合を表し、Ｒは水素原子、メチル基又はＣＦ_３を表す。）

(In the formula, L represents the reactive functional group (b1), X and Y represent a divalent organic group or a single bond, and R represents a hydrogen atom, a methyl group, or CF ₃ ).

  The bonding position of Y and the organic group having the reactive functional group (b1) represented by -XL in the general formula (B1-1) is bonded to any carbon atom in the adamantane structure. Moreover, you may have 2 or more about -XL. Furthermore, part or all of the hydrogen atoms bonded to the carbon atoms constituting the adamantane structure may be substituted with fluorine atoms, alkyl groups, or the like. In the general formula (B1-1), X and Y are a divalent organic group or a single bond. Examples of the divalent organic group include carbon atoms such as a methylene group, a propyl group, and an isopropylidene group. The alkylene group of number 1-8 is mentioned.

  More specific examples of the monomer (B1) include compounds represented by the following formulas (B1-1-1) to (B1-1-5).

  The polymerizable unsaturated monomer (B2) used in the present invention is a polymerizable unsaturated monomer having an adamantyl group, and the adamantyl group is the same as the monomer (B1). The polymerizable unsaturated group of the monomer (B2) is preferably a carbon-carbon unsaturated double bond having radical polymerizability, and more specifically, a vinyl group, a (meth) acryloyl group, a maleimide. A (meth) acryloyl group is more preferable from the viewpoint of easy polymerization. These monomers (C2) can be used alone or in combination of two or more.

  As said monomer (B2) which has a (meth) acryloyl group as a polymerizable unsaturated group, the compound represented by the following general formula (B2-1) is mentioned, for example.

（式中、Ｒは水素原子、メチル基又はＣＦ_３を表す。）

(In the formula, R represents a hydrogen atom, a methyl group or CF _3. )

  The (meth) acryloyl group may be bonded to any carbon atom in the adamantane structure. Moreover, the hydrogen atom couple | bonded with the carbon atom which comprises the adamantane structure in the said general formula (B2-1) may substitute the one part or all part by the fluorine atom, the alkyl group, etc.

  More specific examples of the monomer (B2) include compounds represented by the following formulas (B2-1-1) to (B2-1-3).

  Mass ratio of the compound (A) to the monomer (B1) [(A) / (B1)] or Mass ratio of the compound (A) to the monomer (B2) [(A) / (B2)] Is preferably in the range of 8/92 to 70/30, more preferably in the range of 15/85 to 60/40, and in the range of 20/80 to 50/50 since a cured product having high scratch resistance can be obtained. Is more preferable, and the range of 25/75 to 35/65 is most preferable.

  The monomer (B3) used in the present invention will be described. Examples of the reactive functional group (b3) of the monomer (B3) include a hydroxyl group, an isocyanate group, an epoxy group, a carboxyl group, a carboxylic acid halide group, and an acid anhydride group. The polymerizable unsaturated group of the monomer (B3) is preferably a carbon-carbon unsaturated double bond having radical polymerizability, and more specifically, a vinyl group, a (meth) acryloyl group, a maleimide. A (meth) acryloyl group is more preferable from the viewpoint of easy polymerization.

  Specific examples of the monomer (B3) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 4 -Hydroxybutyl (meth) acrylate, 1,4-cyclohexanedimethanol mono (meth) acrylate, N- (2-hydroxyethyl) (meth) acrylamide, glycerin mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene Glycol mono (meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, 2- (meth) acryloyloxyethyl-2-hydroxyethyl phthalate, lactone modified with a hydroxyl group at the terminal (meth) Unsaturated monomer having hydroxyl group such as acrylate; 2- (meth) acryloyloxyethyl isocyanate, 2- (2- (meth) acryloyloxyethoxy) ethyl isocyanate, 1,1-bis ((meth) acryloyloxymethyl) Unsaturated monomers having an isocyanate group such as ethyl isocyanate; unsaturated monomers having an epoxy group such as glycidyl methacrylate and 4-hydroxybutyl acrylate glycidyl ether; (meth) acrylic acid, 2- (meth) acryloyloxyethyl Unsaturated monomers having a carboxyl group such as succinic acid, 2- (meth) acryloyloxyethylphthalic acid, maleic acid and itaconic acid; acid anhydrides having an unsaturated double bond such as maleic anhydride and itaconic anhydride Etc. These monomers (B3) can be used alone or in combination of two or more.

  In producing the polymer (P1) or (P2) which can be said to be an intermediate of the polymerizable resin (III) used in the present invention, the compound (A), the monomer (B1), the monomer (B2) and In addition to the monomer (B3), other polymerizable unsaturated monomers (B4) that can be copolymerized with these may be used. Examples of such other polymerizable unsaturated monomer (B4) include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, n-butyl (meth) acrylate, and isobutyl (meth). Acrylate, n-pentyl (meth) acrylate, n-hexyl (meth) acrylate, n-heptyl (meth) acrylate, n-octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, nonyl (meth) acrylate, decyl ( (Meth) acrylates such as (meth) acrylate, dodecyl (meth) acrylate, cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, (meth) acrylate having a polyoxyalkylene chain; styrene, α-methylstyrene, p -Methyls Aromatic vinyls such as len and p-methoxystyrene; maleimides such as maleimide, methylmaleimide, ethylmaleimide, propylmaleimide, butylmaleimide, hexylmaleimide, octylmaleimide, dodecylmaleimide, stearylmaleimide, phenylmaleimide, cyclohexylmaleimide, etc. Can be mentioned.

  The compound (C) used in the present invention will be described. Examples of the functional group (c) that the compound (C) has include a hydroxyl group, an isocyanate group, an epoxy group, a carboxyl group, a carboxylic acid halide group, and an acid anhydride. When the reactive functional group (b1) or (b3) possessed by the monomer (B1) or (B3) is a hydroxyl group, the functional group (c) is an isocyanate group, a carboxyl group, a carboxylic acid halide group, an epoxy When the reactive functional group (b1) or (b3) is an isocyanate group, the functional group (c) includes a hydroxyl group, and the reactive functional group (b1) or (b3) is an epoxy group. Is a carboxyl group and a hydroxyl group as the functional group (c), and when the reactive functional group (b1) or (b3) is a carboxyl group, the functional group (c) is an epoxy group or a hydroxyl group. Is mentioned.

  Here, in the present invention, when the monomer (B1) and the monomer (B3) are used in combination, the reactive functional group (b1) and the reactive functional group (b3) included in each of them are respectively In the case of different functional groups and when the reactive functional groups (b1) and (b3) react with a common functional group, a functional group having reactivity with the reactive functional groups (b1) and (b3) One kind of compound (C) having the group (c) can be used. In addition, when the reactive functional group (b1) and the reactive functional group (b3) do not react with a common functional group, a compound having a functional group (c) having reactivity with the reactive functional group (b1) ( It is preferable to use two or more compounds (C) such as C) and a compound (C) having a functional group (c) having reactivity with the reactive functional group (b3).

  The polymerizable unsaturated group of the compound (C) is preferably a carbon-carbon unsaturated double bond having radical polymerizability, and more specifically, a vinyl group, a (meth) acryloyl group, a maleimide group, and the like. (Meth) acryloyl groups are more preferred from the viewpoint of good curability in the active energy ray-curable resin composition described below.

  Specific examples of the compound (C) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 4-hydroxy Butyl (meth) acrylate, 1,4-cyclohexanedimethanol mono (meth) acrylate, N- (2-hydroxyethyl) (meth) acrylamide, glycerin mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (Meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, 2- (meth) acryloyloxyethyl-2-hydroxyethyl phthalate, lactone-modified (meth) acrylate having a hydroxyl group at the terminal Unsaturated monomer having a hydroxyl group such as relate; 2- (meth) acryloyloxyethyl isocyanate, 2- (2- (meth) acryloyloxyethoxy) ethyl isocyanate, 1,1-bis ((meth) acryloyloxymethyl) Unsaturated monomers having an isocyanate group such as ethyl isocyanate; unsaturated monomers having an epoxy group such as glycidyl methacrylate and 4-hydroxybutyl acrylate glycidyl ether; (meth) acrylic acid, 2- (meth) acryloyloxyethyl Unsaturated monomers having a carboxyl group such as succinic acid, 2- (meth) acryloyloxyethylphthalic acid, maleic acid and itaconic acid; acid anhydrides having an unsaturated double bond such as maleic anhydride and itaconic anhydride Etc. Moreover, 2-hydroxy-3-acryloyloxypropyl methacrylate, pentaerythritol triacrylate, dipentaerythritol pentaacrylate etc. can also be used as what has a several polymerizable unsaturated group. These compounds (C) can be used alone or in combination of two or more.

  Among the specific examples of the compound (C), 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 3-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 4-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 3-hydroxypropyl acrylate, 4-hydroxybutyl acrylate are preferable. Hydroxybutyl acrylate, 1,4-cyclohexanedimethanol monoacrylate, N- (2-hydroxyethyl) acrylamide, 2-acryloyloxyethyl isocyanate, 1,1-bis (acryloyloxymethyl) ethyl isocyanate 4-hydroxybutyl acrylate glycidyl ether Acrylic acid is preferred.

  Next, a more specific method for producing the fluorine atom-containing silicone-based polymerizable resin of the present invention will be described using the raw materials listed above.

  In order to produce the polymer (P1) which can be said to be an intermediate of the polymerizable resin (III), for example, the monomer (A), the monomer (B1), and, if necessary, other polymerizable properties The unsaturated monomer (B4) may be polymerized in an organic solvent using a polymerization initiator. In order to produce (P2), for example, the monomer (A), the monomer (B1), the monomer (B2), and the monomer (B3), and further if necessary The other polymerizable unsaturated monomer (B4) may be polymerized in an organic solvent using a polymerization initiator.

  As the organic solvent, ketones, esters, amides, sulfoxides, ethers and hydrocarbons are preferable. Specifically, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, ethyl acetate, butyl acetate, propylene glycol Examples include monomethyl ether acetate, dimethylformamide, dimethylacetamide, N-methylpyrrolidone, dimethyl sulfoxide, diethyl ether, diisopropyl ether, tetrahydrofuran, dioxane, toluene, xylene and the like. These are appropriately selected in consideration of boiling point, compatibility, and polymerizability.

  Examples of the polymerization initiator include peroxides such as benzoyl peroxide and azo compounds such as azobisisobutyronitrile. Furthermore, chain transfer agents such as lauryl mercaptan, 2-mercaptoethanol, thioglycerol, ethylthioglycolic acid, octylthioglycolic acid and the like can be used as necessary.

  Further, the polymer (P1) and the polymer (P2) are obtained by homopolymerizing or copolymerizing the monomer (A), the monomer (B1), and the monomer (B2) in advance by living radical polymerization. In this polymer, monomer (A), monomer (B1), monomer (B2), monomer (B3), monomer (B4) and the like are further added as necessary. It can also be obtained by reacting. By utilizing living radical polymerization, for example, a homopolymer of monomer (A) or monomer (B1) can be synthesized and other monomers can be polymerized to this homopolymer. Therefore, it becomes easy to obtain the polymer (P1) and the polymer (P2) in which the content of the fluorinated alkyl group or adamantyl group is adjusted to a desired range. Below, the said living radical polymerization is demonstrated.

  In general, in living radical polymerization, a dormant species whose active polymerization end is protected by an atom or atomic group reversibly generates a radical and reacts with a monomer, whereby a polymer having a very narrow molecular weight distribution can be obtained. Examples of such living radical polymerization include atom transfer radical polymerization (ATRP), reversible addition-cleavage radical polymerization (RAFT), radical polymerization via nitroxide (NMP), radical polymerization using organic tellurium (TERP), etc. Is mentioned. It is preferable to produce the copolymer (A) by this living radical polymerization because a copolymer having a very narrow molecular weight distribution can be obtained. There is no particular restriction as to which of these methods is used, but the ATRP is preferable from the viewpoint of ease of control. ATRP is polymerized using an organic halide or a sulfonyl halide compound as an initiator, and a metal complex composed of a transition metal compound and a ligand as a catalyst.

  An organic halogenated compound can be used for the polymerization initiator used in the ATRP. Specifically, 1-phenylethyl chloride and 1-phenylethyl bromide, chloroform, carbon tetrachloride, 2-chloropropionitrile, α, α′-dichloroxylene, α, α′-dibromoxylene, hexakis (α- 1 to 6 carbon atoms of bromomethyl) benzene, a 2-halogenated carboxylic acid having 1 to 6 carbon atoms (for example, 2-chloropropionic acid, 2-bromopropionic acid, 2-chloroisobutyric acid, 2-bromoisobutyric acid, etc.) Examples include alkyl esters. Moreover, as a more specific example of a C1-C6 alkyl ester of a C1-C6 2-halogenated carboxylic acid, for example, methyl 2-chloropropionate, ethyl 2-chloropropionate, Examples include methyl 2-bromopropionate and ethyl 2-bromoisobutyrate.

The transition metal compound used in the ATRP is represented by M ^{n +} X _n . Transition metal M ^{n +} is Cu ⁺ , Cu ²⁺ , Fe ²⁺ , Fe ³⁺ , Ru ²⁺ , Ru ³⁺ , Cr ²⁺ , Cr ³⁺ , Mo ⁰ , Mo ⁺ , Mo ²⁺ , Mo ³⁺ , W ²⁺ , W ³⁺ , Rh ³⁺ , Rh ⁴⁺ , Co ⁺ , Co ²⁺ , Re ²⁺ , Re ³⁺ , Ni ⁰ , Ni ⁺ , Mn ³⁺ , Mn ⁴⁺ , V ²⁺ , V ³⁺ , Zn ⁺ , Zn ²⁺ , Au ⁺ , Au ²⁺ , Ag ⁺ And Ag ²⁺ . X is a halogen atom, an alkoxyl group having 1 to 6 carbon atoms, (S0 ₄ ) _1/2 , (P0 ₄ ) _1/3 , (HP0 ₄ ) _1/2 , (H ₂ P0 ₄ ), triflate , Hexafluorophosphate, methane sulfonate, aryl sulfonate (preferably benzene sulfonate or toluene sulfonate), SeR ¹ , CN and R ² COO. Here, R ¹ represents aryl, a linear or branched alkyl group having 1 to 20 carbon atoms (preferably 1 to 10 carbon atoms), and R ² is 1 to 5 hydrogen atom or halogen. It represents a linear or branched alkyl group having 1 to 6 carbon atoms (preferably a methyl group) which may be substituted once (preferably 1 to 3 times with fluorine or chlorine). Further, n represents a formal charge on the metal and is an integer of 0 to 7.

  Although it does not specifically limit as said transition metal complex, As a preferable thing, the transition metal complex of the group 7, 8, 9, 10, 11 is still more preferable, 0 valent copper, 1 valent copper, 2 valent ruthenium A complex of divalent iron or divalent nickel may be mentioned.

  Examples of the compound having a ligand capable of coordinating with a transition metal include a ligand containing at least one nitrogen atom, oxygen atom, phosphorus atom or sulfur atom capable of coordinating with a transition metal via a σ bond. A compound having two or more carbon atoms capable of coordinating with a transition metal via a π bond, a compound having a ligand capable of coordinating with a transition metal via a μ bond or η bond Is mentioned.

  Specific examples of the compound having a ligand include, for example, when the central metal is copper, 2,2′-bipyridyl and its derivative, 1,10-phenanthroline and its derivative, tetramethylethylenediamine, pentamethyldiethylenetriamine, hexa And a complex with a ligand such as polyamine such as methyltris (2-aminoethyl) amine. Examples of the divalent ruthenium complex include dichlorotris (triphenylphosphine) ruthenium, dichlorotris (tributylphosphine) ruthenium, dichloro (cyclooctadiene) ruthenium, dichlorobenzeneruthenium, dichlorop-cymenruthenium, dichloro (norbornadiene) ruthenium, Examples include cis-dichlorobis (2,2′-bipyridine) ruthenium, dichlorotris (1,10-phenanthroline) ruthenium, and carbonylchlorohydridotris (triphenylphosphine) ruthenium. Furthermore, examples of the divalent iron complex include a bistriphenylphosphine complex and a triazacyclononane complex.

  In the case of the polymer (P1) and the polymer (P2) using living radical polymerization, it is preferable to use an organic solvent. As the organic solvent to be used, the above organic solvents and the like can be used.

  The polymerization temperature of the living radical polymerization is preferably in the range of room temperature to 100 ° C.

  The polymer (P1) or (P2) obtained as described above has a functional group (c) having a reactivity with the functional group (b1) or (b3) and a compound having a polymerizable unsaturated group ( By reacting C), the polymerizable resin (III) is obtained.

  The method of reacting the polymer (P1) or the compound (C2) with the polymer (P1) or (P2) may be performed under the condition that the polymerizable unsaturated group contained in the compound (C) or the like is not polymerized. It is preferable to adjust the reaction within a range of ˜120 ° C. This reaction is preferably carried out in the presence of a catalyst or a polymerization inhibitor, and if necessary in the presence of an organic solvent.

  For example, when the functional group (b1) or (b3) is a hydroxyl group and the functional group (c) is an isocyanate group, p-methoxyphenol, hydroquinone, 2,6-di-t is used as a polymerization inhibitor. -Butyl-4-methylphenol or the like is used, and dibutyltin dilaurate, dibutyltin diacetate, tin octylate, zinc octylate or the like is used as the urethanization reaction catalyst, and the reaction temperature is 40 to 120 ° C, particularly 60 to 90 ° C. The method of making it react with is preferable. When the functional group (b1) or (b3) is an epoxy group and the functional group (c) is a carboxyl group, or the functional group (b1) or (b3) is a carboxyl group When the functional group (c) is an epoxy group, p-methoxyphenol, hydroquinone, 2,6-di-t-butyl-4-methylphenol or the like is used as a polymerization inhibitor, and the esterification reaction catalyst is used. Reaction temperature using tertiary amines such as triethylamine, quaternary ammoniums such as tetramethylammonium chloride, tertiary phosphines such as triphenylphosphine, quaternary phosphoniums such as tetrabutylphosphonium chloride, etc. It is preferable to make it react at 80-130 degreeC, especially 100-120 degreeC.

  The organic solvent used in the above reaction is preferably ketones, esters, amides, sulfoxides, ethers, hydrocarbons, specifically, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, ethyl acetate, butyl acetate, Examples include propylene glycol monomethyl ether acetate, dimethylformamide, dimethylacetamide, N-methylpyrrolidone, dimethyl sulfoxide, diethyl ether, diisopropyl ether, tetrahydrofuran, dioxane, toluene, xylene and the like. These may be appropriately selected in consideration of the boiling point and compatibility.

The polymerizable resin (III) obtained as described above is excellent in antifouling property, and therefore its number average molecular weight (Mn) is preferably in the range of 1,000 to 10,000, and 1,500 to A range of 8,000 is more preferable. Moreover, it is preferable that a weight average molecular weight (Mw) is the range of 2,000-50,000, and it is more preferable that it is the range of 3,000-35,000. These number average molecular weight (Mn) and weight average molecular weight (Mw) can be determined by the above GPC measurement.

  As the fluorine atom content in the fluorine atom-containing polymerizable resin in the present invention, 5 to 30% by mass has good compatibility with other resins, surface segregation, and water and oil repellency to the cured product surface. Therefore, 10 to 20% by mass is more preferable. The content of adamantane (a structure consisting of 10 carbon atoms having an adamantane structure and a hydrogen atom added thereto) is preferably 5 to 40% by mass because the hardness of the cured product is good, and 10 to 35% by mass. Is more preferable.

  The equivalent of the polymerizable unsaturated group in the polymerizable resin (III) is 200 to 3,500 g / eq. Because a cured coating film having excellent wear resistance is obtained. The range of 250 to 2,000 g / eq. The range of 300-1500 g / eq. Is more preferable, 400-1,000 g / eq. The range of is particularly preferable.

  Here, the number average molecular weight (Mn) and the weight average molecular weight (Mw) are values converted to polystyrene based on gel permeation chromatography (hereinafter abbreviated as “GPC”) measurement. The measurement conditions for GPC are as follows.

[GPC measurement conditions]
Measuring device: “HLC-8220 GPC” manufactured by Tosoh Corporation
Column: Guard column “HHR-H” manufactured by Tosoh Corporation (6.0 mm ID × 4 cm)
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
Detector: ELSD ("ELSD2000" manufactured by Oltech Japan Co., Ltd.)
Data processing: “GPC-8020 Model II data analysis version 4.30” manufactured by Tosoh Corporation
Measurement conditions: Column temperature 40 ° C
Developing solvent Tetrahydrofuran (THF)
Flow rate: 1.0 ml / min Sample: A 1.0% by mass tetrahydrofuran solution in terms of resin solid content filtered through a microfilter (5 μl).
Standard sample: The following monodisperse polystyrene having a known molecular weight was used in accordance with the measurement manual of “GPC-8020 Model II Data Analysis Version 4.30”.

(Monodispersed polystyrene)
“A-500” manufactured by Tosoh Corporation
"A-1000" manufactured by Tosoh Corporation
"A-2500" manufactured by Tosoh Corporation
"A-5000" manufactured by Tosoh Corporation
“F-1” manufactured by Tosoh Corporation
"F-2" manufactured by Tosoh Corporation
“F-4” manufactured by Tosoh Corporation
“F-10” manufactured by Tosoh Corporation
“F-20” manufactured by Tosoh Corporation
“F-40” manufactured by Tosoh Corporation
“F-80” manufactured by Tosoh Corporation
“F-128” manufactured by Tosoh Corporation
“F-288” manufactured by Tosoh Corporation
“F-550” manufactured by Tosoh Corporation

  The blending amount of the polymerizable resin (III) is preferably in the range of 0.1 to 20 parts by mass with respect to 100 parts by mass in total of the low refractive index agent (I) and the active energy ray-curable compound (II). The range of 0.5-15 mass parts is more preferable, and the range of 1-12 mass parts is further more preferable. When the blending amount of the polymerizable resin (III) is within this range, the antifouling property and scratch resistance are also good.

  When the antireflection coating composition of the present invention is cured by irradiating active energy rays such as ultraviolet rays, a polymerization initiator (IV) is blended in the antireflection coating composition of the present invention. Examples of the polymerization initiator (IV) include benzophenone, acetophenone, benzoin, benzoin ethyl ether, benzoin isobutyl ether, benzyl methyl ketal, azobisisobutyronitrile, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2- Methyl-1-phenyl-1-one, 1- (4′-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 1- (4′-dodecylphenyl) -2-hydroxy-2-methyl Propan-1-one, 3,3 ′, 4,4′-tetra (t-butylperoxycarbonyl) benzophenone, 4,4 ″ -diethylisophthalophene, 2,2-dimethoxy-1,2-diphenylethane -1-one, benzoin isopropyl ether, thioxanthone, -Chlorothioxanthone, 2-methylthioxanthone, 2-isopropylthioxanthone, 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethyl Amino-1- (4-morpholinophenyl) -butanone-1, bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide, bis (2,4,6, -trimethylbenzoyl) -Phenylphosphine oxide, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, etc. may be mentioned, or two or more of them may be used in combination.

  Moreover, if necessary, a photosensitizer such as an amine compound or a phosphorus compound can be added to promote photopolymerization.

  The blending amount of the polymerization initiator (IV) is 0.01 to 15 with respect to a total of 100 parts by mass of the low refractive index agent (I), the active energy ray-curable compound (II) and the polymerizable resin (III). It is preferable that it is the range of a mass part, and it is more preferable that it is the range of 0.3-7 mass parts.

  Furthermore, the antireflective coating composition of the present invention is an organic solvent, a polymerization inhibitor, an antistatic agent, an antifoaming agent, a viscosity modifier, within the range not impairing the effects of the present invention, depending on the purpose of use, characteristics, etc. Additives such as a light-resistant stabilizer stabilizer, a heat-resistant stabilizer, and an antioxidant can be blended.

  In addition, in order to impart coating suitability to the antireflection coating composition of the present invention, an organic solvent may be added to adjust the viscosity. Examples of the organic solvent that can be used here include acetate solvents such as propylene glycol monomethyl ether acetate and propylene glycol monoethyl ether acetate; propionate solvents such as ethoxypropionate; aromatics such as toluene, xylene, and methoxybenzene. Group solvents; ether solvents such as butyl cellosolve, propylene glycol monomethyl ether, diethylene glycol ethyl ether, diethylene glycol dimethyl ether; ketone solvents such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; aliphatic hydrocarbon solvents such as hexane; N, N- Nitrogen compound solvents such as dimethylformamide, γ-butyrolactam, N-methyl-2-pyrrolidone; Lactone solvents such as γ-butyrolactone; Examples thereof include bamic acid esters. These solvents can be used alone or in combination of two or more.

  Here, the amount of the organic solvent used varies depending on the application and the target film thickness and viscosity, but the total amount of the low refractive index agent (I), the active energy ray curable compound (II) and the polymerizable resin (III). On the other hand, the amount is preferably in the range of 4 to 200 times the mass.

  Examples of active energy rays for curing the antireflection coating composition of the present invention include active energy rays such as light, electron beam, and radiation. Specific energy sources or curing devices include, for example, germicidal lamps, ultraviolet fluorescent lamps, carbon arcs, xenon lamps, high pressure mercury lamps for copying, medium or high pressure mercury lamps, ultrahigh pressure mercury lamps, electrodeless lamps, metal halide lamps, natural light, etc. Or an electron beam using a scanning type or curtain type electron beam accelerator. In addition, when making it harden | cure with an electron beam, the mixing | blending of the said polymerization initiator (D) to the antireflection coating composition of this invention is unnecessary.

  Among these active energy rays, ultraviolet rays are particularly preferable. Further, it is preferable to irradiate in an inert gas atmosphere such as nitrogen gas since the surface curability of the coating film is improved. Further, if necessary, heat may be used as an energy source and heat treatment may be performed after curing with active energy rays.

  Examples of the application method of the antireflection coating composition of the present invention include a gravure coater, a roll coater, a comma coater, a knife coater, a curtain coater, a shower coater, a spin coater, a slit coater, dipping, screen printing, spraying, an applicator, and a bar. The coating method using a coater etc. is mentioned.

Although the antireflection film of the present invention has a cured coating film of the antireflection coating composition of the present invention, specifically, it can be produced by the following method.
(1) First, a hard coat material is applied to a substrate and cured to form a hard coat layer coating.
(2) The antireflective coating composition of the present invention is applied to the hard coat layer and cured to form a coating film having a low refractive index layer. This low refractive index layer becomes the outermost surface of the antireflection film.
A medium refractive index layer and / or a high refractive index layer may be provided between the hard coat layer and the low refractive index layer.

  The hard coat material can be used without particular limitation as long as a cured coating film having a relatively high surface hardness can be obtained, but the active energy ray curable exemplified as the active energy ray curable compound (II). A combination of the monomer (II-1) and the active energy ray-curable resin (II-2) is preferable.

  The thickness of the hard coat layer is preferably in the range of 0.1 to 100 μm, more preferably in the range of 1 to 30 μm, and still more preferably in the range of 3 to 15 μm. When the thickness of the hard coat layer is within this range, the adhesion to the substrate and the surface hardness of the antireflection film are increased. Further, the refractive index of the hard coat layer is not particularly limited. However, when the refractive index is high, good antireflection can be achieved without providing the medium refractive index layer and the high refractive index layer.

  The thickness of the low refractive index layer formed by applying and curing the antireflection coating composition of the present invention is preferably in the range of 50 to 300 nm, more preferably in the range of 50 to 150 nm, and 80 to More preferably, it is in the range of 120 nm. When the thickness of the low refractive index layer is within this range, the antireflection effect can be improved. In addition, the refractive index of the low refractive index layer is preferably in the range of 1.20 to 1.45, and more preferably in the range of 1.23 to 1.42. When the refractive index of the low refractive index layer is within this range, the antireflection effect can be improved.

  The thickness of the medium refractive index layer or the high refractive index layer is preferably in the range of 10 to 300 nm, and more preferably in the range of 30 to 200 nm. Further, the refractive index of the medium refractive index layer or the high refractive index layer is selected depending on the refractive indexes of the low refractive index layer and the hard coat layer existing above and below, but is arbitrarily selected within the range of 1.40 to 2.00. Can be set.

  Examples of the material for forming the medium refractive index layer or the high refractive index layer include epoxy resins, phenol resins, melamine resins, alkyd resins, cyanate resins, acrylic resins, polyester resins, Resins that can be cured by heat, ultraviolet curing, and electron beam, such as urethane resins and siloxane resins. These resins can be used alone or in combination of two or more. Moreover, it is more preferable to mix inorganic fine particles having a high refractive index with these resins.

  As the high refractive index inorganic fine particles, those having a refractive index of 1.65 to 2.00 are preferable. For example, zinc oxide having a refractive index of 1.90, titania having a refractive index of 2.3 to 2.7, Ceria having a refractive index of 1.95, tin-doped indium oxide having a refractive index of 1.95 to 2.00, antimony-doped tin oxide having a refractive index of 1.75 to 1.85, a refractive index of 1.87 And yttria, and zirconia having a refractive index of 2.10. These high refractive index inorganic fine particles can be used alone or in combination of two or more.

  In addition, since the productivity can be improved by making the medium refractive index layer or the high refractive index layer the same as the antireflective coating composition of the present invention, the antireflective coating composition of the present invention can be improved. When the product is cured with ultraviolet rays, it is preferable that the ultraviolet curable composition is used to form a medium refractive index layer or a high refractive index layer.

  Examples of the substrate used for the antireflection film of the present invention include, for example, polyester films such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate; polyolefin films such as polypropylene, polyethylene, and polymethylpentene-1; triacetyl cellulose (TAC) Cellulose film such as polystyrene film, polyamide film, polycarbonate film, norbornene resin film (for example, “ZEONOR” manufactured by ZEON CORPORATION), modified norbornene resin film (for example, “ARTON” manufactured by JSR Corporation), Cyclic olefin copolymer films (for example, “Apel” manufactured by Mitsui Chemicals, Inc.), etc. Two or more of these films may be used together. Lum may be a sheet. The thickness of the film substrate, 20 to 500 [mu] m is preferred.

  The reflectance of the antireflection film of the present invention is preferably 2.0% or less, more preferably 1.5% or less, and further preferably 1.0% or less.

  Hereinafter, the present invention will be described in more detail with reference to specific examples. In the examples, “parts” and “%” are based on mass unless otherwise specified. The measurement conditions of GPC are as follows.

[GPC measurement conditions]
Measuring device: “HLC-8220 GPC” manufactured by Tosoh Corporation
Column: Guard column “HHR-H” manufactured by Tosoh Corporation (6.0 mm ID × 4 cm)
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
+ "TSK-GEL GMHHR-N" (7.8 mm ID x 30 cm) manufactured by Tosoh Corporation
Detector: ELSD ("ELSD2000" manufactured by Oltech Japan Co., Ltd.)
Data processing: “GPC-8020 Model II data analysis version 4.30” manufactured by Tosoh Corporation
Measurement conditions: Column temperature 40 ° C
Developing solvent Tetrahydrofuran (THF)
Flow rate: 1.0 ml / min Sample: A 1.0% by mass tetrahydrofuran solution in terms of resin solid content filtered through a microfilter (5 μl).
Standard sample: The following monodisperse polystyrene having a known molecular weight was used in accordance with the measurement manual of “GPC-8020 Model II Data Analysis Version 4.30”.

(Monodispersed polystyrene)
“A-500” manufactured by Tosoh Corporation
"A-1000" manufactured by Tosoh Corporation
"A-2500" manufactured by Tosoh Corporation
"A-5000" manufactured by Tosoh Corporation
“F-1” manufactured by Tosoh Corporation
"F-2" manufactured by Tosoh Corporation
“F-4” manufactured by Tosoh Corporation
“F-10” manufactured by Tosoh Corporation
“F-20” manufactured by Tosoh Corporation
“F-40” manufactured by Tosoh Corporation
“F-80” manufactured by Tosoh Corporation
“F-128” manufactured by Tosoh Corporation
“F-288” manufactured by Tosoh Corporation
“F-550” manufactured by Tosoh Corporation

Synthesis Example 1 [Preparation of polymerizable resin (III)]
A glass flask equipped with a stirrer, a thermometer, a condenser, and a dropping device was charged with 50.4 g of methyl isobutyl ketone as a solvent and heated to 90 ° C. while stirring under a nitrogen stream. Subsequently, 44.1 g of 2- (tridecafluorohexyl) ethyl methacrylate, a monomer solution obtained by dissolving 59.1 g of 3-hydroxy-1-adamantyl methacrylate in 167.4 g of methyl isobutyl ketone, and t-butyl as a radical polymerization initiator Two kinds of dripping liquids, which are a polymerization initiator solution in which 6.2 g of peroxy-2-ethylhexanoate was dissolved in 23.2 g of methyl isobutyl ketone, were set in separate dripping apparatuses, and the flask was kept at 90 ° C. It was dripped simultaneously over 2 hours. After completion of dropping, the mixture was stirred at 90 ° C. for 9 hours, and then 172.0 parts of the solvent was distilled off under reduced pressure to obtain a polymer (P-1) solution.

  Next, 0.1 g of p-methoxyphenol as a polymerization inhibitor and 0.03 g of tin octylate as a urethanization catalyst were charged, stirring was started under an air stream, and 2-acryloyloxyethyl isocyanate 34. 4 g was added dropwise over 1 hour. After completion of the dropwise addition, the mixture was stirred at 60 ° C. for 2 hours, then heated to 80 ° C. and stirred for 8 hours to confirm the disappearance of the isocyanate group by IR spectrum measurement, methyl isobutyl ketone was added, and polymerizable resin (III A methyl isobutyl ketone solution containing 40% of -1) was obtained. The molecular weight of the polymerizable resin (III-1) was measured by GPC (polystyrene equivalent molecular weight). As a result, the number average molecular weight was 3,600 and the weight average molecular weight was 18,000. The fluorine atom content calculated from the raw material charge ratio was 18%, the adamantane content was 24%, and the radical polymerizable unsaturated group equivalent was 550 g / eq. Met.

Synthesis example 2 (same as above)
To a flask purged with nitrogen, 30.3 g of 2-propanol and 20.0 g of 3-hydroxy-1-adamantyl methacrylate were charged as solvents, and the temperature was raised to 40 ° C. while stirring under a nitrogen stream. Next, 2.5 g of 2,2′-bipyridyl and 0.79 g of cuprous chloride were charged, and the mixture was stirred for 30 minutes while maintaining the inside of the flask at 40 ° C. Thereafter, 1.57 g of ethyl 2-bromoisobutyrate was added, and the mixture was reacted at 40 ° C. for 5 hours under a nitrogen stream. Next, 49.3 g of 2-propanol, 14.6 g of 2- (tridecafluorohexyl) ethyl methacrylate and 20.0 g of 3-hydroxy-1-adamantyl methacrylate were added and reacted at 40 ° C. for 5 hours. The temperature was raised to about 8 hours. This reaction mixture was dissolved in methanol and purified by reprecipitation with water / methanol to obtain a copolymer. 41.4 g of this copolymer was dissolved in 41.4 g of methyl isobutyl ketone, 0.02 g of tin octylate and 0.1 g of a polymerization inhibitor (p-methoxyphenol) were added, and the temperature was raised to 60 ° C. While introducing dry air into the liquid, 17.7 g of 2-acryloyloxyethyl isocyanate was added dropwise, reacted for 2 hours, heated to 80 ° C., further reacted for 4 hours, and added with methyl isobutyl ketone to contain fluorine. A solution of the polymerizable resin (III-2) having a rate of 40% by mass was obtained. As a result of measuring the molecular weight of the polymerizable resin (III-2) by GPC, the weight average molecular weight was 8,500 and the number average molecular weight was 6,400. The fluorine atom content calculated from the raw material charge ratio was 11%, the adamantane content was 28%, and the radical polymerizable unsaturated group equivalent was 472 g / eq. Met.

Synthesis Example 3 [Preparation of polymerizable resin (III ′) for comparison]
A glass flask equipped with a stirrer, thermometer, condenser, and dropping device was charged with 55 g of methyl isobutyl ketone as a solvent, and the temperature was raised to 90 ° C. while stirring under a nitrogen stream. Next, a monomer solution obtained by dissolving 35 g of (2-tridecafluorohexyl) ethyl methacrylate, 31.2 g of 2-hydroxyethyl methacrylate in 37.3 g of methyl isobutyl ketone, and t-butylperoxy-2-ethyl as a radical polymerization initiator Two types of dripping liquids, ie, a polymerization initiator solution in which 4 g of hexanoate was dissolved in 4 g of methyl isobutyl ketone, were set in separate dripping apparatuses, respectively, and dropped simultaneously over 2 hours while maintaining the inside of the flask at 90 ° C. After completion of dropping, the mixture was stirred at 90 ° C. for 9 hours to obtain a polymer (P′-1) solution.

  Next, 0.1 g of p-methoxyphenol as a polymerization inhibitor and 0.03 g of tin octylate as a urethanization catalyst were charged, stirring was started under an air stream, and 2-acryloyloxyethyl isocyanate 33. 8 g was added dropwise over 1 hour. After completion of the dropwise addition, the mixture was stirred at 60 ° C. for 2 hours, then heated to 80 ° C. and stirred for 8 hours to confirm the disappearance of the isocyanate group by IR spectrum measurement, and methyl isobutyl ketone was added. A methyl isobutyl ketone solution containing 40% of the resin (III ′) was obtained. As a result of measuring the molecular weight of the resulting polymerizable resin for comparison (III ′) by GPC (polystyrene equivalent molecular weight), the number average molecular weight was 6,100, the weight average molecular weight was 14,300, and the radical polymerizable unsaturated group equivalent was 417 g. / Eq. Met. The fluorine atom content calculated from the raw material charge ratio was 20%.

Example 1
<Preparation of antireflection coating composition>
15 parts by mass of methyl isobutyl ketone dispersion containing 20% by mass of hollow silica fine particles (average particle size 50 nm), 1.6 parts by mass of pentaerythritol triacrylate, 2-hydroxy-1- {4- [4 as a photopolymerization initiator 0.1 part by mass of-(2-hydroxy-2-methyl-propionyl) -benzyl] -phenyl} -2-methyl-propan-1-one ("Irgacure 127" manufactured by Ciba Japan Co., Ltd.), methyl isobutyl as a solvent 81.8 parts by mass of ketone was mixed and dissolved to obtain a base composition of an antireflection coating composition.

  A solution containing 40% of the polymerizable resin (III-1) is added to 98.5 parts by mass of the base composition of the antireflective coating composition obtained above so that the resin content is 0.4 parts by mass. The mixture was uniformly mixed to prepare the antireflection coating composition (1) of the present invention.

<Preparation of antireflection film>
50 parts by mass of pentafunctional non-yellowing urethane acrylate, 50 parts by mass of dipentaerythritol hexaacrylate, 25 parts by mass of butyl acetate, 1-hydroxycyclohexyl phenyl ketone (“Irgacure 184” manufactured by Ciba Specialty Chemicals) as a photopolymerization initiator 5 54 parts by mass of toluene, 28 parts by mass of 2-propanol, 28 parts by mass of ethyl acetate, and 28 parts by mass of propylene glycol monomethyl ether as a solvent were mixed and dissolved to obtain a coating composition for a hard coat layer.

The obtained coating composition for a hard coat layer was applied to a bar coater no. 13 is applied to a TAC film having a thickness of 80 μm, and then put into a dryer at 60 ° C. for 5 minutes to evaporate the solvent. ² ), a hard coat film having a 10 μm thick hard coat layer on one side was prepared.

The bar coater No. 1 was applied on the hard coat layer of the hard coat film obtained above so that the coating amount of the antireflection coating composition (1) was 2 g / m ² . Then, the solvent is volatilized in a dryer at 60 ° C. for 5 minutes and cured with an ultraviolet curing device (in a nitrogen atmosphere, using a high pressure mercury lamp, an ultraviolet irradiation amount of ² kJ / m ² ). An antireflection film (1) having an antireflection layer having a thickness of 0.1 μm on the hard coat layer was produced.

  About the cured coating film surface of the anti-reflective coating composition of the anti-reflective film obtained above, the following external appearance, abrasion resistance, and dirt wiping property were evaluated. Moreover, the reflectance of the antireflection film was measured. These evaluations were performed before and after the alkali treatment shown below.

[Evaluation of appearance]
The antireflection film obtained above was placed on a black plate, the presence or absence of whitening of the cured coating film of the antireflection coating composition was visually observed, and the appearance was evaluated according to the following criteria. The evaluation results are shown in Table 1.
○: No whitening occurs.
X: Whitening occurs.

[Evaluation of scratch resistance]
Tribogear HEIDON reciprocating wear tester TYPE: 30S (made by Shinto Kagaku Co., Ltd.), wear tester (500g / The test was performed with 30 reciprocating wear at a load of cm ² . The number of scratches on the coating surface after the test was counted, and the scratch resistance was evaluated according to the following criteria.
A: The number of scratches is less than 5.
○: The number of scratches is 5 or more and less than 10.
Δ: The number of scratches is 10 or more and less than 50.
X: The number of scratches is 50 or more.

[Evaluation of fingerprint dirt wiping property]
Fingerprints are attached to the surface of the cured coating film of the antireflective coating composition of the antireflective film obtained above, and the wiping condition when wiped 10 times with tissue paper is visually observed. The wiping property was evaluated.
A: Fingerprints can be completely wiped off.
○: A fingerprint mark or a linear trace along the wiping direction remained slightly compared to the time of adhesion.
X: A fingerprint mark or a linear mark along the wiping direction remains with a density of more than half that at the time of adhesion.

[Measurement of reflectance]
The reflectance was measured using a spectrophotometer (“UV-3100PC” manufactured by Shimadzu Corporation) equipped with a 5 ° C. regular reflection measuring apparatus. The reflectivity was a value when the local minimum value (minimum reflectivity) was reached near the wavelength of 550 nm.

<Strong alkali (saponification) treatment method for cured coating film>
The antireflection film obtained above was immersed in a 2.0 mol / L potassium hydroxide aqueous solution heated to 70 ° C. for 1 minute, washed with water, dried at 100 ° C. for 3 minutes, and then subjected to a strong alkali treatment. .

Example 2
Instead of the 40% containing solution of the polymerizable resin (III-1) used in Example 1, a 20% containing solution of the polymerizable resin (III-2) was added so that the resin content was 0.4 parts by mass. Except for the above, the same operation as in Example 1 was performed for evaluation. The evaluation results are shown in Table 1.

Comparative Example 1
Instead of the 40% containing solution of the polymerizable resin (III-1) used in Example 1, the solution containing 40% by weight of the polymerizable resin (III ′) for comparison and control was 0.4 parts by mass. Evaluation was carried out by operating in the same manner as in Example 1 except for adding to. The evaluation results are shown in Table 1.

Comparative Example 2
Instead of the 40% -containing solution of the polymerizable resin (III-1) used in Example 1, silicone oil ("Silane Plain FM-4421" manufactured by Chisso Corporation), -C ₃ H at both ends of the polydimethylsiloxane chain _{6 having 1} OC ₂ H ₄ OH)) was added in the same manner as in Example 1 except that 0.8 parts by mass (0.4 parts by mass as a resin component) of a methyl isobutyl ketone solution containing 50% by mass was added. Evaluation was performed. The evaluation results are shown in Table 1.

Comparative Example 3
Instead of the 40% containing solution of the polymerizable resin (III-1) used in Example 1, 50% by mass of a tetrafunctional acrylate having a dimethylsiloxane chain (“BYK-UV3570” manufactured by Big Chemie Japan Co., Ltd.) is contained. Evaluation was carried out in the same manner as in Example 1 except that 0.8 parts by mass of methyl isobutyl ketone solution (0.4 parts by mass as the resin content) was added. The evaluation results are shown in Table 1.

Comparative Example 4
Evaluation was performed in the same manner as in Example 1 without adding anything to the base resin composition of the active energy ray-curable composition prepared in Example 1. The evaluation results are shown in Table 1.

Claims (8)

  Low refractive index agent (I), active energy ray-curable compound (II), polymerizable unsaturated monomer (A) having a fluorinated alkyl group, and adamantyl group having a reactive functional group (b1) A functional group (c) having reactivity to the functional group (b1) into a polymer (P1) obtained by copolymerizing a polymerizable unsaturated monomer (B1) as an essential monomer component And a compound (C) having a polymerizable unsaturated group, or a polymerizable unsaturated monomer (A) having a fluorinated alkyl group and an adamantyl group having a reactive functional group (b1) Polymerizable unsaturated monomer (B1) having an adamantyl group having no reactive functional group (b1) and polymerizable functional group having a reactive functional group (b3) Unsaturated monomer (B3) as an essential monomer component One or more compounds having a functional group (c) and a polymerizable unsaturated group reactive to the functional group (b1) or the functional group (b3) in the polymer (P2) obtained by polymerization An antireflective coating composition comprising a polymerizable resin (III) other than the active energy ray-curable compound (II) obtained by reacting (C).   The antireflective coating composition according to claim 1, wherein the fluorinated alkyl group has 4 to 6 carbon atoms.   The reactive functional group (b1) or the reactive functional group (b3) is at least one functional group selected from the group consisting of a hydroxyl group, an isocyanate group, an epoxy group, a carboxyl group, a carboxylic acid halide group, and an acid anhydride group. And the functional group (c) of the compound (C) is reactive with the reactive functional group (b1) or the reactive functional group (b3), and is a hydroxyl group, an isocyanate group, an epoxy group, or a carboxyl group. The antireflective coating composition according to claim 1, which is at least one functional group selected from the group consisting of carboxylic acid halide groups and acid anhydride groups.   Mass ratio of compound (A) to monomer (B1) [(A) / (B1)] or Mass ratio of compound (A) to monomer (B2) [[(A)] / (B2 )] Is in the range of 8/92 to 70/30.   The antireflective coating composition according to claim 1, wherein the low refractive index agent (I) is hollow silica fine particles.   6. The polymerizable resin (III) is contained in an amount of 0.1 to 20 parts by mass with respect to a total of 100 parts by mass of the low refractive index agent (I) and the active energy ray-curable compound (II). The antireflection coating composition according to any one of the above.   An antireflection film having a cured coating film of the antireflection coating composition according to claim 1.   The antireflection film according to claim 6, wherein the cured coating film has a thickness of 50 to 300 nm.