KR20080089264A - Curable composition, cured film and laminate prepared therefrom - Google Patents

Abstract

A curing composition, a cured film formed by curing the composition, and a laminate having the cured film are provided to increase refractivity and reflectivity and to improve scratch resistance and antistatic property. A curing composition comprises (A) a particle having a polymerizable unsaturated group, comprising an oxide of at least one element selected from the group consisting of Zn, In, Sn and Sb as a main component and having a median diameter of 65-85 nm; (B) a compound having at least polymerizable unsaturated group, at least one alkylene oxide chain and at least two aromatic rings; and (C) a compound having at least one polymerizable unsaturated group other than (A) and (B).

Description

Curable composition, its cured film, and laminated body {CURABLE COMPOSITION, CURED FILM AND LAMINATE PREPARED THEREFROM}

This invention relates to a curable composition, the cured film formed by hardening it, and a laminated body. More specifically, the present invention relates to a curable composition, a cured film, and a laminate that provide a high refractive index and an antistatic cured film.

Recently plastic (polycarbonate, polymethyl methacrylate, polystyrene, polyester, polyolefin, epoxy resin, melamine resin, triacetyl cellulose resin, ABS resin, AS resin, norbornene-based resin, etc.), metal, wood, paper Protective coating material and anti-reflective coating material to prevent damage (scratch) or contamination of various substrate surfaces such as glass, slate, etc., and have excellent coating property, and have hardness, scratch resistance, abrasion resistance, surface lubricity, There is a demand for a curable composition capable of forming a cured film having excellent low curling properties, adhesion, transparency, chemical resistance, and appearance of a coating film surface.

Moreover, in the curable composition which provides the cured film which has antistatic property, it is made to contain electroconductive particle, but there existed a problem that the cured film which shows constant antistatic performance, transparency, reflectance, and abrasion resistance cannot be formed stably.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2004-331909

[Patent Document 2] Japanese Patent Application Laid-Open No. 2005-31282

[Patent Document 3] Japanese Unexamined Patent Application Publication No. 2005-146110

This invention is made | formed in view of the above-mentioned problem, and an object of this invention is to obtain the curable composition which provides the cured film which has stable antistatic performance, excellent scratch resistance, and also a high refractive index and a high reflectance.

In order to achieve the above object, the present inventors earnestly study and control the particle diameter of the conductive particles having a polymerizable unsaturated group to achieve a constant surface resistance value, and a compound having an EO-modified bisphenol A skeleton having a polymerizable unsaturated group. By using as a part of binder resin, it discovered that the curable composition which provides a cured film which is high refractive index and excellent in abrasion resistance was obtained, and completed this invention.

That is, this invention provides the following curable composition, cured film, and laminated body.

[1] The curable composition containing the following components (A) to (C).

(A) Particles having a polymerizable unsaturated group and having an oxide of at least one element selected from the group consisting of zinc, indium, tin and antimony having a median diameter in the range of 65 to 85 nm.

(B) compounds having at least one polymerizable unsaturated group, at least one alkylene oxide chain and at least two aromatic rings

(C) A compound having at least one polymerizable unsaturated group other than the components (A) and (B).

[2] The curable composition according to the above [1], wherein the compound of component (B) has a structure represented by the following general formula (2a).

In formula 2a, R <^1> and R <^2> is a C2-C4 bivalent hydrocarbon group, R <^3> is a C1-C20 bivalent hydrocarbon group which may have a single bond or an aromatic ring, R <^5> -R <^6> is A hydrogen atom or a methyl group, R ¹⁴ and R ¹⁵ represent a hydrogen atom or a (meth) acryloyl group, at least one of q ¹⁴ R and p ¹⁵ R is a (meth) acryloyl group, and m and n Are 1 to 30, p is 1 to 4, and q is 0 to 4]

[3] The curable composition according to the above [1] or [2], wherein the compound of component (B) has a structure represented by the following general formula (2b).

In Formula 2b, R ⁴ represents a hydrogen atom or a methyl group, R ¹¹ and R ¹² each represent a hydrogen atom, a methyl group or a phenyl group, R ¹³ represents a hydrogen atom or a (meth) acryloyl group, and m is Each independently represent a number from 1 to 30;

[4] The method according to any one of [1] to [3], wherein the oxide particles of the component (A) are selected from the group consisting of antimony-containing tin oxide, tin-containing indium oxide, fluorine-containing tin oxide, and aluminum-containing zinc oxide. Curable composition.

[5] The curable composition according to the above [4], wherein the oxide particles of the component (A) are antimony-containing tin oxide.

[6] The curable composition according to any one of [1] to [5], wherein the polymerizable unsaturated group of the component (A) contains a structure represented by the following general formula (4).

[In Formula 4, U represents NH, O (oxygen atom) or S (sulfur atom), and V represents O or S.]

[7] The curable composition according to any one of the above [1] to [6], further comprising (D) a compound that generates active species by irradiation with an active energy ray.

[8] The curable composition according to any one of the above [1] to [7], further comprising (E) an organic solvent.

[9] The curable composition according to any one of [1] to [8], wherein the polymerizable unsaturated group of the component (C) is a (meth) acryloyl group.

[10] A cured film obtained by curing the curable composition according to any one of the above [1] to [9].

[11] A laminate having a cured film according to the above [10] on a base material.

The curable composition of the present invention can provide a cured film having stable antistatic performance, high refractive index and reflectance, and excellent scratch resistance.

The cured film of this invention can be used as an antistatic layer, a high refractive index layer, and a hard-coat layer of an antireflective laminated body.

I. Curable Compositions

The curable composition (henceforth a composition of this invention) of this invention can contain the following components (A)-(F). In these, components (A)-(C) are essential components, and components (D)-(F) are arbitrary components added as needed.

(A) Particles having a polymerizable unsaturated group and having an oxide of at least one element selected from the group consisting of zinc, indium, tin and antimony having a median diameter in the range of 65 to 85 nm.

(B) compounds having at least one polymerizable unsaturated group, at least one alkylene oxide chain and at least two aromatic rings

(C) Compounds having at least one polymerizable unsaturated group other than the components (A) and (B)

(D) A compound which generates active species by irradiation of an active energy ray

(E) organic solvent

(F) additives.

(1) Hereinafter, each component is demonstrated.

(A) Particles having a polymerizable unsaturated group and having an oxide of at least one element selected from the group consisting of zinc, indium, tin and antimony having a median diameter in the range of 65 to 85 nm.

Component (A) is a particle having a polymerizable unsaturated group and having a specific median diameter as a main component (hereinafter referred to as "reactive particles").

The reactive particles react particles (Aa), which are mainly composed of oxides of at least one element selected from the group consisting of zinc, indium, tin and antimony, and organic compounds (Ab) having a polymerizable unsaturated group and a hydrolyzable silyl group in the molecule. It is obtained by making it.

By mix | blending a component (A), the hardness of the cured film obtained by reacting with the polymerizable unsaturated group which component (B) and (C) which are mentioned later have, and superposing | polymerizing can further be improved, and cure shrinkage (strain) can be reduced.

(1) Particles (Aa) containing oxides as main components (hereinafter referred to as "oxide particles")

Examples of the oxide particles (Aa) include particles such as zinc oxide, indium oxide, tin oxide, indium tin oxide (ITO), and antimony oxide. Among these, particles of antimony oxide are preferred from the viewpoint of high hardness. These can be used individually or in combination of 2 or more types. In addition, it is preferable to use an oxide particle (Aa) as powder form or a solvent dispersion sol. When used as a solvent dispersing sol, the organic solvent is preferably used as the dispersion medium from the viewpoint of compatibility with other components and dispersibility. As such an organic solvent, For example, Alcohol, such as methanol, ethanol, isopropanol, butanol, an octanol; Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; Esters such as ethyl acetate, butyl acetate, ethyl lactate, γ-butyrolactone, propylene glycol monomethyl ether acetate, and propylene glycol monoethyl ether acetate; Ethers such as ethylene glycol monomethyl ether and diethylene glycol monobutyl ether; Aromatic hydrocarbons such as benzene, toluene and xylene; Amides, such as dimethylformamide, dimethylacetamide, and N-methylpyrrolidone, are mentioned. Among these, methanol, isopropanol, butanol, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate, toluene and xylene are preferable.

Examples of the oxide particles (Aa) capable of imparting excellent antistatic properties include antimony-containing tin oxide, tin-containing indium oxide, fluorine-containing tin oxide, and aluminum-containing zinc oxide.

The median diameter of the reactive particles needs to be in the range of 65 to 85 nm, and preferably in the range of 70 to 80 nm. If the median diameter of the particles is less than 65 nm, the surface resistance may increase or the scratch resistance may decrease. When it exceeds 85 nm, transparency may be impaired or reflectance may fall.

Here, the median diameter means a diameter in which the large side and the small side are equivalent when the powder is divided into two by any particle size.

The median diameter of the antimony-containing tin oxide particles dispersed in the obtained dispersion liquid can be measured under the following conditions.

Instrument: Dynamic light scattering particle size distribution measuring device manufactured by Horiba Seisakusho Co., Ltd.

Measuring condition: temperature: 25 ℃

           Sample: Measure the sample as it is

Data interpretation condition: based on particle size: based on volume

                  Dispersed Particles: ATO Particles, Refractive Index 2.05

                  Dispersant: methanol, refractive index 1.329

The median diameter is controlled by the dispersion time. That is, the median diameter can be made small by increasing the median diameter by shortening the dispersion time and by increasing the dispersion time.

Moreover, as an aqueous dispersion of the zinc antimonate powder, Nissan Chemical Industries, Ltd. Celax; As powder and solvent dispersion products, such as tin oxide, indium oxide, and zinc oxide, Nano-Technology Co., Ltd. make; As an aqueous dispersion of antimony dope tin oxide, Ishihara Sangyo Co., Ltd. SN-100D; As ITO powder, the product of Mitsubishi Material Co., Ltd. product is mentioned.

The shape of the oxide particles (Aa) is spherical, hollow, porous, rod, plate, fibrous, or indefinite, and is preferably spherical. The specific surface area (measured by BET specific surface area measurement method using nitrogen) of an oxide particle (Aa) becomes like this. Preferably it is 10-1000 m <2> / g, More preferably, it is 100-500 m <2> / g. The use form of these oxide particles (Aa) can be used in the state which disperse | distributed to the dry powder, water, or the organic solvent. For example, a dispersion of fine oxide particles known in the art can be used directly as the solvent dispersion sol of the oxide. Especially in the use which requires the outstanding transparency for hardened | cured material, use of the organic solvent dispersion sol of an oxide is preferable.

(2) organic compound (Ab)

The organic compound (Ab) used in the present invention is a compound having a polymerizable unsaturated group, and is preferably an organic compound containing a group represented by the following general formula (4).

<Formula 4>

[In Formula 4, U represents NH, O (oxygen atom) or S (sulfur atom), and V represents O or S.]

It also contains a [-OC (= O) -NH-] group, and further includes at least one of a [-OC (= S) -NH-] group and a [-SC (= O) -NH-] group. It is preferable. Moreover, it is preferable that this organic compound (Eb) is a compound which has a silanol group in a molecule | numerator, or a compound which produces a silanol group by hydrolysis.

(i) polymerizable unsaturated groups

Although there is no restriction | limiting in particular as a polymerizable unsaturated group contained in an organic compound (Eb), For example, acryloyl group, methacryloyl group, vinyl group, propenyl group, butadienyl group, styryl group, ethynyl group, cinnamoyl group, A maleate group and an acrylamide group are mentioned as a suitable example.

This polymerizable unsaturated group is a structural unit which addition-polymerizes with active radical species.

(ii) a group represented by the above formula (4)

The group [-UC (= V) -NH-] represented by the formula (4) contained in the organic compound is specifically [-OC (= O) -NH-], [-OC (= S) -NH-]. , [-SC (= O) -NH-], [-NH-C (= O) -NH-], [-NH-C (= S) -NH-], and [-SC (= S) -NH -] 6 species. These groups can be used individually by 1 type or in combination of 2 or more types. Among them, at least one of a [-OC (= O) -NH-] group, a [-OC (= S) -NH-] group and a [-SC (= O) -NH-] group is used in combination from the viewpoint of thermal stability. It is desirable to.

The group [-UC (= V) -NH-] represented by the above formula (4) generates an appropriate cohesive force due to hydrogen bonding between molecules, and when it is a cured product, excellent mechanical strength, adjacent layers such as a substrate or a high refractive index layer. It is thought to give characteristics, such as adhesiveness and heat resistance.

(iii) silanol groups or groups that produce silanol groups by hydrolysis

It is preferable that an organic compound (Eb) is a compound which has a silanol group in a molecule | numerator, or a compound which produces a silanol group by hydrolysis. As a compound which produces | generates such a silanol group, The compound which the alkoxy group, the aryloxy group, the acetoxy group, the amino group, the halogen atom, etc. couple | bonded with the silicon atom is mentioned, The compound which the alkoxy group or the aryloxy group couple | bonded with the silicon atom, That is, an alkoxy silyl group containing compound or an aryloxy silyl group containing compound is preferable.

The silanol group generation site of the silanol group or the silanol group-producing compound is a structural unit bonded to the oxide particles (Aa) by a condensation reaction occurring after the condensation reaction or hydrolysis.

(iv) preferred embodiments

As a preferable specific example of an organic compound (Ab), the compound represented by following formula (11) is mentioned, for example.

In formula (11), R ⁶ , R ⁷ may be the same or different and are a hydrogen atom or an alkyl or aryl group having 1 to 8 carbon atoms, for example, methyl, ethyl, propyl, butyl, octyl, phenyl, xylyl group, and the like. Can be mentioned. Here j is an integer of 1-3.

As a group represented by [(R ⁶ O) _j R ⁷ _{3 - j} Si-], for example, trimethoxysilyl group, triethoxysilyl group, triphenoxysilyl group, methyldimethoxysilyl group, dimethylmeth A oxysilyl group etc. are mentioned. Among these groups, trimethoxysilyl group, triethoxysilyl group, and the like are preferable.

R ⁸ is a divalent organic group having an aliphatic or aromatic structure having 1 to 12 carbon atoms, and may include a chain, branched or cyclic structure. Specific examples include methylene, ethylene, propylene, butylene, hexamethylene, cyclohexylene, phenylene, xylylene, dodecamethylene and the like.

R ⁹ is a divalent organic group, and is usually selected from divalent organic groups having a molecular weight of 14 to 10,000, preferably a molecular weight of 76 to 500. As a specific example, Chain polyalkylene groups, such as hexamethylene, octamethylene, and dodecamethylene; Alicyclic or polycyclic divalent organic groups such as cyclohexylene and norbornylene; Divalent aromatic groups such as phenylene, naphthylene, biphenylene and polyphenylene; And alkyl group substituents and aryl group substituents thereof. Moreover, these divalent organic groups may contain the atomic group containing elements other than carbon and a hydrogen atom, and may also contain a polyether bond, a polyester bond, a polyamide bond, and a polycarbonate bond.

R ¹⁰ is a (k + 1) valent organic group, and is preferably selected from a chain, branched or cyclic saturated hydrocarbon group and unsaturated hydrocarbon group.

Z represents monovalent organic group which has a polymerizable unsaturated group which intermolecular crosslinking-reacts in a molecule | numerator in presence of an active radical species. Further, k is preferably an integer of 1 to 20, more preferably an integer of 1 to 10, particularly preferably an integer of 1 to 5.

Specific examples of the compound represented by the formula (11) include compounds represented by the following formulas (12) and (13).

[In Formula 12 and 13, "Acryl" represents an acryloyl group.]

The synthesis | combination of the organic compound (Ab) used by this invention can use the method of Unexamined-Japanese-Patent No. 9-100111, for example. Preferably, mercaptopropyltrimethoxysilane and isophorone diisocyanate are mixed in the presence of dibutyltin dilaurate, reacted for several hours at 60 to 70 ° C, and then pentaerythritol triacrylate is added thereto, Furthermore, it is manufactured by reacting for about several hours at 60-70 degreeC.

(3) Preparation of Reactive Particles (A)

The organic compound (Eb) having a silanol group or a group which generates a silanol group by hydrolysis is mixed with the metal oxide particles (Aa), and hydrolyzed to bind both. The ratio of the organic polymer component, ie, the hydrolyzate and condensate of the hydrolyzable silane, in the obtained reactive particles (E) is usually a weight loss percentage of the weight loss when the dry powder is completely burned in air, for example, in room temperature in air. Can be obtained by thermal gravimetric analysis from

The bonding amount of the organic compound (Ab) to the oxide particles (Aa) is 100% by weight of the reactive particles (A) (the sum of the metal oxide particles (Aa) and the organic compound (Ab)), preferably 0.01% by weight It is more than 0.1 weight%, More preferably, it is 0.1 weight% or more, Especially preferably, it is 1 weight% or more. When the bonding amount of the organic compound (Ab) bonded to the metal oxide particle (Aa) is less than 0.01% by weight, the dispersibility of the reactive particles (A) in the composition is not sufficient, and the transparency and scratch resistance of the cured product obtained are insufficient. There is. Moreover, the compounding ratio of the metal oxide particle (Aa) in the raw material at the time of manufacture of a reactive particle | grain (A) becomes like this. Preferably it is 5-99 weight%, More preferably, it is 10-98 weight%. It is preferable that content of the oxide particle (Aa) which comprises a reactive particle (A) is 65 to 95 weight% of a reactive particle (A).

When the compounding quantity of the component (A) in the composition of this invention makes the composition whole quantity except the organic solvent 100 weight%, it is preferable to set it as 50 to 90 weight%, It is more preferable to set it as 65 to 85 weight%, It is especially preferable to carry out in 75 to 80weight% of a range. When the compounding quantity of a component (A) is less than 50 weight%, when using a cured film, a high reflectance may not be obtained, and when it exceeds 90 weight%, film formability may become inadequate.

In addition, content of a reactive particle | grain (A) means solid content, and when a reactive particle (A) is used in the form of a solvent dispersion sol, the content does not contain the quantity of a solvent.

(B) compounds having at least one polymerizable unsaturated group, at least one alkylene oxide chain and at least two aromatic rings

The component (B) is not only a compound having a high refractive index, but also has a property of easily adhering to oxide particles and hardly adhering to air, so that the cured film obtained can have a higher refractive index.

When the compound which has a bisphenol skeleton conventionally modified | denatured by alkylene oxide (AO), since the flexibility of a compound becomes high, it was thought that the hardness of the cured film obtained falls. However, it has been discovered by the present inventors that in combination with antimony-containing tin oxide (ATO), the hardness of the cured film such as scratch resistance is not lowered.

It is preferable that the compound of component (B) has a structure represented by following formula (B-1).

<Formula B-1>

In formula (B-1), R <^1> and R <^2> is a C2-C4 bivalent hydrocarbon group, respectively, Preferably they are an ethylene group and a propylene group.

R <^3> is a C1-C20 bivalent hydrocarbon group which may have a single bond or an aromatic ring, As a divalent hydrocarbon group, methylene, isopropylidene, methylphenyl methylidene, etc. are preferable.

R ⁵ to R ⁶ represent a hydrogen atom or a methyl group.

R ¹⁴ and R ¹⁵ represent a hydrogen atom or a (meth) acryloyl group, and at least one of q ¹⁴ R and p ¹⁵ R is a (meth) acryloyl group.

m and n respectively represent the number of 1-30, Preferably it is 1-10.

p represents the number of 1-4, Preferably it is 1-2.

q represents the number of 0-4, Preferably it is 1-2.

It is more preferable that the compound of component (B) has a structure represented by the following general formula (B-2).

<Formula B-2>

In general formula (B-2), R <^4> represents a hydrogen atom or a methyl group, respectively.

R ¹¹ and R ¹² each represent a hydrogen atom, a methyl group, or a phenyl group.

R ¹³ represents a hydrogen atom or a (meth) acryloyl group.

m represents the number of 1-30, Preferably it is 1-10.

(1) polymerizable unsaturated groups

Although there is no restriction | limiting in particular as a polymerizable unsaturated group which a component (B) has, For example, acryloyl group, methacryloyl group, vinyl group, propenyl group, butadienyl group, styryl group, ethynyl group, cinnamoyl group, maleate A group and an acrylamide group are mentioned as a suitable example.

This polymerizable unsaturated group is a structural unit which addition-polymerizes with component (A) and (C) by active radical species.

(2) Method of Producing Compound of Component (B)

When alkylene oxide is ethylene oxide (EO) in the compound of component (B), it can manufacture as follows.

Bisphenol and oxirane are reacted under basic conditions to prepare an EO adduct of bisphenol. Using paratoluenesulfonic acid as a catalyst, acrylic acid can be reacted with the EO adduct of bisphenol, and the EO adduct diacrylate of bisphenol can be manufactured.

(3) specific examples

Specific examples of the compound of component (B) include ethylene oxide (hereinafter referred to as "EO") adduct di (meth) acrylate of bisphenol A and propylene oxide (hereinafter referred to as "PO") PO adduct of bisphenol A Di (meth) acrylate, EO addition product di (meth) acrylate of bisphenol F, PO addition product di (meth) acrylate of bisphenol F, etc. are mentioned, EO addition product di (meth) acrylate of bisphenol A is mentioned. Etc. are preferable.

As an example of the commercial item of the compound of the component (B), biscoat 700 (bisphenol A, EO addition product diacrylate; Osaka Yuki Chemical Co., Ltd. product), light ester BP-2EM (EO addition product di of bisphenol A) Methacrylate), light acrylate BP-4EA (EO adduct diacrylate of bisphenol A), light acrylate BP-4PA (PO adduct diacrylate of bisphenol A); Kyoesha Chemical Co., Ltd. make, aronix M-208 (EO addition product diacrylate of bisphenol F), aronix M-210, aronix 211B (EO addition product diacrylate of bisphenol A); Toagosei Co., Ltd. make, SR-349, SR-601, SR-602 (EO adduct diacrylate of bisphenol A), SR-348, SR-480, SR-9036 (EO adduct dimetha of bisphenol A) Crylate) Kayarrad R-551, R-712 (EO adduct diacrylate of bisphenol A); Nippon Kayaku Co., Ltd. product, NK ESTER ABE-300, A-BPE-4, A-BPE-10, A-BPE-20, A-BPE-30, A-BPE-3 (EO addition product of bisphenol A) Diacrylate), NK ESTER BPE-100, BPE-200, BPE-300, BPE-500, BPE-900, BPE-1300N (EO adduct dimethacrylate of bisphenol A); Shin-Nakamura Kagaku Kogyo Co., Ltd. manufacture etc. are mentioned.

When the compounding quantity of the component (B) in the composition of this invention makes the composition whole quantity except the organic solvent 100 weight%, it is 1-15 weight% normally, Preferably it is 2-10 weight%, More preferably, 4 It is in the range of -6 weight%. If content of component (B) is less than 1 weight%, there exists a possibility that a reflectance may fall, and when it exceeds 15 weight%, sclerosis | hardenability may become inadequate.

(C) Compounds having at least one polymerizable unsaturated group other than components (A) and (B)

The compound which has one or more polymerizable unsaturated groups is used in order to improve the scratch resistance of the cured film obtained by hardening | curing the composition of this invention, and the anti-reflective film using the same.

The compound is not particularly limited as long as it is a compound containing at least one polymerizable unsaturated group in the molecule. As a polymerizable unsaturated group, a (meth) acryloyl group is preferable.

As a compound which has one (meth) acryloyl group, for example, acryloyl morpholine, isobornyl (meth) acrylate, bornyl (meth) acrylate, tricyclo decanyl (meth) acrylate, and dish Alicyclic structure-containing (meth) acrylate, benzyl (meth) acrylate, 4-butylcyclohexyl (such as clopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, cyclohexyl (meth) acrylate ( Meth) acrylate, acryloyl morpholine, vinylimidazole, vinylpyridine, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylic Rate, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, butyl (meth) acrylate, amyl (meth) acrylate, isobutyl (meth) Acrylate, t-butyl ( 2), pentyl (meth) acrylate, isoamyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, octyl (meth) acrylate, isooctyl (meth) acrylate, 2 -Ethylhexyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, isodecyl (meth) acrylate, undecyl (meth) acrylate, dodecyl (meth) acrylate, lauryl ( Meth) acrylate, stearyl (meth) acrylate, isostearyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, butoxyethyl (meth) acrylate, ethoxydiethylene glycol (meth) acrylate Benzyl (meth) acrylate, phenoxyethyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, methoxyethylene glycol (meth) acrylate, Ethoxyethyl (meth) acrylate, methoxy polyethylene glycol (meth) acrylate, methoxy polypropylene glycol (meth) acrylate, diacetone (meth) acrylamide, isobutoxymethyl (meth) acrylamide, N, N -Dimethyl (meth) acrylamide, t-octyl (meth) acrylamide, dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate, 7-amino-3,7-dimethyloctyl (meth) acryl Latex, N, N-diethyl (meth) acrylamide, N, N-dimethylaminopropyl (meth) acrylamide, hydroxybutyl vinyl ether, lauryl vinyl ether, cetyl vinyl ether, 2-ethylhexyl vinyl ether, The compound represented by General formula (15), etc. are mentioned.

CH ₂ = C (R ²⁶ ) -COO (R ²⁷ O) _d -Ph-R ²⁸

(In the formula, R ²⁶ is a hydrogen atom or a methyl group, R ²⁷ is 2 to 6 carbon atoms, preferably alkylene groups of 2 to 4, R ²⁸ is 1 to have the hydrogen atom or a group having 1 to 12 carbon atoms, preferably 9 represents an alkyl group, Ph represents a phenylene group, and d represents a number from 0 to 12, preferably 1 to 8)

As these commercial items, Aronix M-101, M-102, M-111, M-113, M-114, M-117 (above, Toagosei Co., Ltd. make); Biscotti LA, STA, IBXA, 2-MTA, # 192, # 193 (manufactured by Osaka Yuki Chemical Co., Ltd.); NK ester AMP-10G, AMP-20G, and AMP-60G (above, manufactured by Shin-Nakamura Kagaku Kogyo Co., Ltd.); Light acrylate L-A, S-A, IB-XA, PO-A, PO-200A, NP-4EA, NP-8EA (above, manufactured by Kyoeisha Chemical Co., Ltd.); FA-511, FA-512A, FA-513A (above, Hitachi Kasei Kogyo Co., Ltd. product) etc. are mentioned.

Examples of the compound having two or more (meth) acryloyl groups include ethylene glycol di (meth) acrylate, dicyclopentenyldi (meth) acrylate, triethylene glycol diacrylate, and tetraethylene glycol di (meth). Acrylate, tricyclodecanediyldimethylenedi (meth) acrylate, tris (2-hydroxyethyl) isocyanuratedi (meth) acrylate, tris (2-hydroxyethyl) isocyanurate tri (meth ) Acrylate, caprolactone modified tris (2-hydroxyethyl) isocyanurate tri (meth) acrylate, trimethylolpropane tri (meth) acrylate, ethylene oxide (hereinafter referred to as "EO"), modified trimethyl All propane tri (meth) acrylate, propylene oxide (hereinafter referred to as "PO"), modified trimethylolpropane tri (meth) acrylate, tripropylene glycol di (meth) acrylate, neopentylglycol Di (meth) acrylate, both terminal (meth) acrylic acid adducts of bisphenol A diglycidyl ether, 1,4-butanedioldi (meth) acrylate, 1,6-hexanedioldi (meth) acrylate, penta Erythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, polyester di (meth) acrylate, polyethylene glycol di (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipenta Erythritol penta (meth) acrylate, dipentaerythritol tetra (meth) acrylate, caprolactone modified dipentaerythritol hexa (meth) acrylate, caprolactone modified dipentaerythritol penta (meth) acrylate, ditrimethyl All propane tetra (meth) acrylate etc. can be illustrated. Examples of commercially available products of these polyfunctional monomers include SA1002 (above, manufactured by Mitsubishi Chemical Corporation), Biscot 195, Biscuit 230, Biscot 260, Biscot 215, Biscot 310, Biscot 214HP, Biscot 295, Biscot 300, Biscot 360, Biscot GPT, Biscot 400, Biscot 3000, Biscot 3700 (above, manufactured by Osaka Yuki Kagaku Kogyo Co., Ltd.), Kayard R-526, HDDA, NPGDA, TPGDA , MANDA, R-604, R-684, PET-30, GPO-303, TMPTA, THE-330, DPHA, DPHA-2H, DPHA-2C, DPHA-2I, D-310, D-330, DPCA-20 , DPCA-30, DPCA-60, DPCA-120, DN-0075, DN-2475, T-1420, T-2020, T-2040, TPA-320, TPA-330, RP-1040, RP-2040, R -011, R-300, R-205 (above, manufactured by Nippon Kayaku Co., Ltd.), M-220, M-233, M-240, M-215, M-305, M-309, M-310, M-315, M-325, M-400, M-6200, M-6400 (above, manufactured by Toagosei Co., Ltd.), New Frontier BPE-4, BR-42M, GX-8345 (above, Daiichi Kogyo Seiya KU Co., Ltd.), ASF-400 (above, Shin-Nitetsu Chemical Co., Ltd.), Repoxy SP-1506, SP-1507, SP-1509, VR-77, SP-4010, SP-4060 (above, Showa Kobunshi Co., Ltd. product) etc. are mentioned.

Moreover, in the composition of this invention, the compound containing at least 3 or more (meth) acryloyl group in a molecule | numerator among these is more preferable. As such 3 or more compounds, it can select from the tri (meth) acrylate compound, the tetra (meth) acrylate compound, the penta (meth) acrylate compound, the hexa (meth) acrylate compound, etc. which were illustrated above, These Among them, pentaerythritol hydroxytriacrylate and trimethylolpropane triacrylate are particularly preferable. Said compound can be used individually by 1 type or in combination of 2 or more types, respectively.

Although it does not restrict | limit especially about the compounding quantity of the component (C) in the composition of this invention, When making the composition whole quantity other than the organic solvent 100 weight%, it is usually 1-15 weight%, Preferably it is 5-14 weight%, More preferably, it exists in the range of 11 to 13 weight%. When the compounding quantity of a component (C) is less than 1 weight%, it is because the scratch resistance of the cured coating film obtained may not be obtained, and when it exceeds 15 weight%, there exists a possibility that a refractive index may fall.

(D) A compound which generates active species by irradiation of an active energy ray

In the composition of this invention, the compound (it may be called "(D) component" hereafter) which generate | occur | produces an active species by irradiation of an active energy ray is added. Such a compound is used in order to harden curable composition efficiently.

As a compound which generate | occur | produces an active species by irradiation of an active energy ray (henceforth a "photoinitiator"), the radical radical generator etc. which generate a radical species as active species are mentioned.

In addition, an active energy ray is defined as an energy ray which can generate | occur | produce an active species by decomposing the compound which produces an active species. Examples of such active energy rays include visible energy rays such as visible light, ultraviolet rays, infrared rays, X rays, α rays, β rays, and γ rays. However, it is preferable to use ultraviolet rays from the viewpoint of having a constant energy level, fast curing speed, relatively low cost, and small irradiation device.

As an example of an optical radical generating agent, for example, acetophenone, acetophenonebenzyl ketal, anthraquinone, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, carbazole, xanthone , 4-chlorobenzophenone, 4,4'-diaminobenzophenone, 1,1-dimethoxydioxybenzoin, 3,3'-dimethyl-4-methoxybenzophenone, thioxanthone, 2,2- Dimethoxy-2-phenylacetophenone, 1- (4-dodecylphenyl) -2-hydroxy-2-methylpropan-1-one, 2-methyl-1- [4- (methylthio) phenyl] -2 -Morpholinopropane-1-one, triphenylamine, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1-phenylpropane -1-one, fluorenone, fluorene, benzaldehyde, benzoin ethyl ether, benzoin propylether, benzophenone, myhilerketone, 3-methylacetophenone, 3,3 ', 4,4'-tetra (tert- Butylperoxycarbonyl) benzophenone (BTTB), 2- (dimethylamino) -1- [4- (morpholinyl) phenyl] -2-phenyl Tyl) -1-butanone, 4-benzoyl-4'-methyldiphenylsulfide, 2-hydroxy-2-methyl- [4- (1-methylvinyl) phenyl] propanol oligomer, benzyl or BTTB and xanthene And combination with thioxanthene, coumarin, ketocoumarin, and other dye sensitizers.

Of these photoinitiators, 2,2-dimethoxy-2-phenylacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexylphenylketone, 2,4,6 -Trimethylbenzoyldiphenylphosphineoxide, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropane-1-one, 2- (dimethylamino) -1- [4- (mor Polyyl) phenyl] -2-phenylmethyl) -1-butanone, 2-hydroxy-2-methyl- [4- (1-methylvinyl) phenyl] propanol oligomer, etc. are preferable, More preferably, 1- Hydroxycyclohexylphenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropane-1-one, 2- (dimethylamino) -1- [4- (morpholinyl ) Phenyl] -2-phenylmethyl) -1-butanone, 2-hydroxy-2-methyl- [4- (1-methylvinyl) phenyl] propanol oligomer, etc. are mentioned.

Although the compounding quantity of the component (D) in the composition of this invention is not restrict | limited, When making the composition whole quantity except the organic solvent 100 weight%, it is preferable to set it as 0-15 weight%, and set it as 2-8 weight%. It is more preferable, and it is especially preferable to carry out in 3 to 6weight% of a range. When it exceeds 15 weight%, there exists a possibility that hardness may fall.

(E) organic solvent

The composition of this invention can contain the organic solvent. By containing the organic solvent, the antireflection film of a thin film can be formed uniformly. As such an organic solvent, ketones, such as acetone, methyl isobutyl ketone, methyl ethyl ketone, cyclohexanone, and methyl amyl ketone, esters, such as ethyl acetate, butyl acetate, and a propylene glycol monomethyl ether acetate, a propylene glycol monomethyl ether, methanol Alcohols such as ethanol, sec-butanol, t-butanol, 2-propanol, isopropanol, aromatics such as benzene, toluene and chlorobenzene, and one kind alone or a combination of two or more such as aliphatic such as hexane and cyclohexane Can be mentioned. Among these, ketones such as acetone, methyl isobutyl ketone, methyl ethyl ketone, cyclohexanone and methyl amyl ketone, esters such as ethyl acetate, butyl acetate and propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, methanol and ethanol Alcohols, such as sec-butanol, t-butanol, 2-propanol, isopropanol, are preferable, More preferably, they are single 1 type or a combination of 2 or more types of methyl isobutyl ketone, methyl amyl ketone, and t-butanol.

As an organic solvent, only the dispersion medium of the reactive particle | grains of the above-mentioned component (A) may be used, and other organic solvents may be used together.

Although it does not restrict | limit especially about the compounding quantity of an organic solvent, It is preferable to set it as 10-100,000 weight part with respect to 100 weight part of compositions whole quantity except the organic solvent. The reason is that when the blending amount of the organic solvent is less than 10 parts by weight, it may be difficult to adjust the viscosity of the curable composition. On the other hand, when it exceeds 100,000 parts by weight, the storage stability of the curable composition is reduced, or the viscosity is excessively lowered. This is because it may become difficult.

(F) additive

The composition of the present invention includes a photosensitizer, a polymerization inhibitor, a polymerization initiation aid, a leveling agent, a wettability improving agent, a surfactant, a plasticizer, an ultraviolet absorber, an antioxidant, an antistatic agent, and a range that does not impair the object or effect of the present invention. It is also preferable to further contain additives such as a silane coupling agent, an inorganic filler, a pigment and a dye.

(2) Production method of the composition of the present invention

The composition of this invention can also be manufactured by adding the composition containing the said (A)-(D) component, and the said (E)-(F) component as needed, respectively, and mixing under room temperature or heating conditions. Specifically, it can manufacture using mixers, such as a mixer, a kneader, a ball mill, and a triaxial roll.

(3) Curing Conditions of the Composition of the Present Invention

The composition of the present invention can be cured by heat and / or radiation (light). In the case of heat, for example, an electric heater, an infrared lamp, hot air, or the like can be used. In the case of radiation (light), the source is not particularly limited as long as it can be cured in a short time after coating the composition. For example, a lamp, a resistance heating plate, a laser, or the like is used as a source of visible light. , Lamps, fluorescent lamps, lasers, etc. Mercury lamps, halide lamps, lasers, etc. as a source of ultraviolet light, using the heat electrons generated from commercially available tungsten filament as a source of electron beams, cold And a secondary electron system using secondary electrons generated by collision between the cathode system and the ionized gaseous molecules and the metal electrode. Examples of the sources of the α-ray, β-ray and γ-rays include nuclear fission materials such as Co ^60. For γ-rays, vacuum tubes and the like that collide the accelerated electrons with the anode can be used. These radiations can be irradiated alone or in combination of two or more thereof over a period of time.

As conditions to harden | cure by heating, it is preferable to heat for 1 to 180 minutes at the temperature within the range of 30-200 degreeC. By heating in this way, the antireflection film excellent in scratch resistance can be obtained more efficiently, without damaging a base material or the like.

Moreover, for this reason, it is more preferable to heat 2 to 120 minutes at the temperature within the range of 50-180 degreeC, and it is still more preferable to heat for 5 to 60 minutes at the temperature within the range of 80-150 degreeC.

It is preferable to make the exposure amount into the value within the range of 0.01-10 J / cm <2> of the conditions of the subsequent irradiation.

This is because when the exposure amount is less than 0.01 J / cm 2, curing failure may occur. On the other hand, when the exposure amount exceeds 10 J / cm 2, the curing time may be excessively long.

Moreover, for this reason, it is more preferable to make exposure amount into the value within the range of 0.1-5 J / cm <2>, and it is still more preferable to set it as the value within the range which is 0.3-3 J / cm <2>.

II. Cured film and laminated body

The cured film of this invention contains the hardened | cured material which hardened the composition of the said invention. Since the cured film of this invention is high refractive index and has antistatic property, it is useful as a high refractive index antistatic layer.

The laminated body of this invention comprises the layer containing the cured film of this invention. The layer containing the cured film of this invention is a layer which has a function of a high refractive index layer and / or an antistatic layer. In addition, when the laminated body of this invention is an anti-reflection film, it may contain a low refractive index layer, a hard coating layer, a base material, etc. other than the said layer.

1 is a cross-sectional view of such an antireflection film. As shown in FIG. 1, the hard coat layer 3, the high refractive index layer 4, and the low refractive index layer 5 are laminated | stacked on the base material 2. As shown in FIG.

At this time, the high refractive index layer 4 may be formed directly on the substrate 2 instead of the hard coating layer 3. In addition, the middle refractive index layer 6 may be provided between the hard coating layer 3 and the high refractive index layer 4 (not shown).

(1) low refractive index layer

It does not restrict | limit especially as a curable composition for forming a low refractive index layer, A well-known low refractive index layer forming material can be used.

It is preferable that the refractive index (refractive index of Na-D line | wire, 25 degreeC of measurement temperature) of a low refractive index layer shall be 1.50 or less. This is because, when the refractive index of the low refractive index film exceeds 1.50, the antireflection effect may be significantly reduced. Therefore, the refractive index of the low refractive index film is more preferably 1.48 or less, and even more preferably 1.45 or less.

In the case where a plurality of low refractive index films are provided, one or more of them may have a value of the refractive index within the above-described range, and thus the refractive index of the other low refractive index film may be a value exceeding 1.50.

The thickness of the low refractive index layer is not particularly limited, but is preferably 50 to 200 nm. The reason is that when the thickness of the low refractive index layer is less than 50 nm, the antireflection effect may not be sufficiently obtained. On the other hand, when the thickness exceeds 200 nm, optical interference occurs and the antireflection effect is lowered. Because there is.

Therefore, the thickness of the low refractive index layer is more preferably 50 to 250 nm, and more preferably 70 to 150 nm.

(2) high refractive index layer

The high refractive index layer is composed of a cured film obtained by curing the composition of the present invention. Since the high refractive index layer also has antistatic properties, the dustproofness of the laminate is improved.

Since the structure etc. of the composition of this invention are the same as that mentioned above, the specific description here is abbreviate | omitted and the refractive index and thickness of a high refractive index layer are demonstrated below.

It is preferable that the refractive index of a high refractive index layer is 1.57 or more, It is more preferable that it is 1.58 or more, It is especially preferable that it is 1.59 or more. If the refractive index of the high refractive index layer is less than 1.57, good antireflection characteristics may not be obtained.

Moreover, it is preferable that the difference of the refractive index of a low refractive index layer is 0.16 or more, and it is more preferable that it is 0.17 or more. When the refractive index difference between the high refractive index layer and the low refractive index layer is less than 0.16, there is a fear that the antireflection effect may not be obtained.

The thickness of the high refractive index layer is not particularly limited, but is preferably 50 to 30,000 nm. The reason for this is that when the thickness of the high refractive index layer is less than 50 nm, in combination with the low refractive index layer, the antireflection effect and the adhesion to the substrate may decrease, while when the thickness exceeds 30,000 nm, This is because interference may occur and the antireflection effect may be lowered.

Therefore, the thickness of the high refractive index layer is more preferably 50 to 1,000 nm, more preferably 60 to 500 nm.

In addition, in the case where a plurality of high refractive index layers are provided to form a multilayer structure in order to obtain higher antireflection, the total of the thicknesses of the plurality of high refractive index layers can be set to 50 to 30,000 nm.

In addition, when providing a hard-coat layer between a high refractive index layer and a base material, the thickness of a high refractive index layer can be 50-300 nm.

(3) hard coating layer

There is no restriction | limiting in particular about the constituent material of the hard coat layer used for the antireflection film of this invention. As such a material, single 1 type, or 2 or more types of combinations, such as a siloxane resin, an acrylic resin, a melamine resin, an epoxy resin, are mentioned.

The thickness of the hard coating layer is not particularly limited, but is preferably 1 to 100 m, more preferably 3 to 30 m. The reason is that when the thickness of the hard coating layer is less than 1 µm, the hardness as a hard coating may decrease. On the other hand, when the thickness exceeds 100 µm, the substrate may be deformed due to curing shrinkage of the hard coating. to be.

(4) mention

Although the kind of base material used for the antireflection film of this invention is not restrict | limited, For example, glass, a polycarbonate resin, polyester resin, acrylic resin, polyethylene terephthalate resin (PET), triacetyl cellulose resin ( And base materials including TAC). By using the antireflection film containing these base materials, excellent antireflection effect can be obtained in the field of use of a wide range of antireflection films such as a lens part of a camera, a screen display part of a television (CRT), or a color filter in a liquid crystal display.

<Example>

Hereinafter, although an Example demonstrates this invention further more concretely, this invention is not limited by these Examples. In addition, "%" and "part" mean weight% and a weight part unless there is particular notice.

Preparation Example 1 Preparation of Antimony Particle Dispersion

Antimony-containing tin oxide particles (manufactured by Ishihara Techno Co., Ltd., brand name: SN-100P, primary particle diameter of 10 to 30 nm), dispersant (ADEKA Co., Ltd.), brand name: Adeka Pluronic TR-701, And methanol were mixed in a compounding amount of 29.1 / 0.9 / 70 (weight ratio) (total solid content 30%, total inorganic content 29.1%).

It was processed for 1 hour under the following conditions using Mitsui Kozan Co., Ltd. SC mill, and the particle dispersion solution of 59 nm in median diameter was obtained.

Equipment: Mitsui Kozan Co., Ltd. SC mill

Frequency: 60 Hz (equivalent to 3600 rpm)

Casing capacity: 59 ml

Liquid volume: 500 g

Dispersion Bead Filling Capacity: Glass Beads (manufactured by TOSHINRIKO, BZ-01)

                  (Bead diameter 0.1 mm) 40 g Volume filling rate 27%

The median diameter of the antimony-containing tin oxide particles dispersed in the obtained dispersion was measured under the following conditions.

Instrument: Dynamic light scattering particle size distribution measuring instrument manufactured by Horiba Seisakusho Co., Ltd.

Measuring condition: temperature: 25 ℃

           Sample: Measure the sample as it is

Data interpretation condition: based on particle size: based on volume

                  Dispersed Particles: ATO Particles, Refractive Index 2.05

                  Dispersant: methanol, refractive index 1.329

Preparation Example 2 Preparation of Organic Compound (Ab) Having a Polymerizable Unsaturation Group

To a solution containing 221 parts of mercaptopropyltrimethoxysilane and 1 part of dibutyltin dilaurate in dry air, 222 parts of isophorone diisocyanate was added dropwise at 50 ° C over 1 hour with stirring, followed by 3 at 70 ° C. Heat stirring for hours. NK ester A-TMM-3LM-N (60 weight% of pentaerythritol triacrylate and 40 weight% of pentaerythritol tetraacrylates) manufactured by Shin-Kanamura Chemical Industries, Inc., and the thing which participates in this reaction is a hydroxyl group 549 parts of pentaerythritol triacrylate only) was dripped at 30 degreeC over 1 hour, and the organic compound (Ab) containing a polymerizable unsaturated group was obtained by heat-stirring at 60 degreeC for 10 hours. The residual amount of isocyanate in the product was analyzed by FT-IR and 0.1% or less, indicating that the reaction was almost finished quantitatively. The infrared absorption spectrum of the product is that the absorption peak of 2550 cm ^-1 characteristic of the mercapto group in the raw material and the absorption peak of 2260 cm ^-1 characteristic of the raw isocyanate compound are lost, and the urethane bond and S (C = O) NH- A peak of 1660 cm ⁻¹ characteristic to the group and a 1720 cm ⁻¹ characteristic characteristic of the acryloxy group were observed, and an acryl jade having acryloxy group as a polymerizable unsaturated group and —S (C═O) NH— and a urethane bond It was found that a time-modified alkoxysilane was produced.

Preparation Example 3 Preparation of Reactive Particle Dispersion A

98.6 parts of the antimony particle dispersion prepared in Preparation Example 1, 1.2 parts of the composition prepared in Preparation Example 2, 0.02 parts of ion-exchanged water and 0.01 part of p-hydroxyphenyl monomethyl ether were stirred at 60 ° C. for 4 hours, 0.20 part of ortho formic acid methyl ester was added, and also the reactive particle dispersion A was obtained by heat-stirring at the same temperature for 1 hour. 2 g of this dispersion was weighed into an aluminum dish, then dried and weighed for 1 hour on a hot plate at 175 ° C. to obtain a solid content, which was 31%. Furthermore, after weighing 2 g of the dispersion liquid in a magnetic crucible, preliminarily drying for 30 minutes on a hot plate at 80 ° C., and calculating the inorganic content in the solid content from the inorganic residue after firing for 1 hour in a muffle at 750 ° C., 96% It was.

Preparation Example 4 Preparation of Reactive Particle Dispersion B

Reactive particle dispersion B was prepared according to Production Examples 1 to 3, except that the median diameter of the antimony particle dispersion in Preparation Example 1 was 70 nm.

Preparation Example 5 Preparation of Reactive Particle Dispersion C

Reactive particle dispersion C was prepared according to Production Examples 1 to 3, except that the median diameter of the antimony particle dispersion in Preparation Example 1 was 78 nm.

Preparation Example 6 Preparation of Reactive Particle Dispersion D

Reactive particle dispersion D was prepared according to Production Examples 1 to 3, except that the median diameter of the antimony particle dispersion in Preparation Example 1 was 89 nm.

Example 1

(1) Preparation of high refractive index antistatic curable composition

Each component shown in Table 1 was added to the container which shielded the ultraviolet-ray, and it stirred at room temperature for 1 hour, and obtained the uniform composition.

(2) Production of Laminates Having Hard Coating and High Refractive Index Antistatic Layer

A hard coating material (manufactured by JSR Co., Ltd., product name: Z7501) was coated on a polyethylene terephthalate (PET) film (Toyo Boseki Co., Ltd. PET A4300) which is a substrate using a coater equipped with a wire bar (# 12). Coated. Then, it dried for 3 minutes at 80 degreeC in oven, and formed the coating film. Subsequently, the coating film was ultraviolet-cured by light irradiation conditions of 900 mJ / cm <2> using the high pressure mercury lamp in air | atmosphere. In addition, the composition prepared in the above (1) was coated on the hard coat layer cured film using a coater equipped with a wire bar (# 3). Then, it dried for 2 minutes at 80 degreeC in oven, and formed the coating film. Subsequently, the coating film was ultraviolet-cured by light irradiation conditions of 600 mJ / cm <2> using the high pressure mercury lamp in air | atmosphere, and the laminated body was manufactured.

(3) Production of Laminates Having Hard Coating, High Refractive Index Antistatic Layer, and Low Refractive Index Layer

The low refractive index material (the JSR Corporation make, brand name: TU2157) was coated on the laminated body manufactured by said (2) using the coater which attached the wire bar (# 12). At this time, the low refractive index material used what diluted the solid content to 3.6% by methyl isobutyl ketone. Then, it dried for 2 minutes at 80 degreeC in oven, and formed the coating film. Subsequently, the coating film was UV-cured by light irradiation conditions of 600 mJ / cm <2> using the high pressure mercury lamp in nitrogen atmosphere, and the laminated body was produced.

(4) Evaluation of Laminates Having Hard Coatings and High Refractive Index Antistatic Layers

About the laminated body manufactured by said (2), transparency (haze), surface resistance, and reflectance were measured.

In addition, the haze was measured according to ASTMD1003 using the color haze meter (made by Suga Shikiki Co., Ltd.).

The surface resistance (Ω / □) was measured at an applied voltage of 100 V using a High Resistance Meter 4339B manufactured by Agilent Technology.

The reflectance measurement was measured by attaching a large integrating sphere device (Nippon Bunco Co., Ltd. product, brand name: ILV-471) to a spectrophotometer (Nipbon Bunco Co., Ltd. make, brand name: V-570).

The results are shown in Table 1.

(5) Evaluation of laminate having hard coating, high refractive index antistatic layer and low refractive index layer

About the laminated body manufactured by said (3), the scratch resistance (steel resistance) was measured by the method shown below.

Steel wool (Bonstar No.0000, manufactured by Nippon Steel Wool Co., Ltd.) was mounted on a Hakjin type friction fastness tester (AB-301, Tester Sangyo Co., Ltd.), and the surface of the cured film was subjected to a load of 233 g / cm 2. It was repeated 10 times, and it checked visually whether the damage generate | occur | produced on the surface of the said cured film, and evaluated according to the following criteria. The results are shown in Table 1.

(Circle): Minor damage to a cured film is observed.

X: The damage of a stripe shape is observed on the whole cured film.

  Example 2 and Comparative Examples 1 to 4

Except having set it as the formulation described in Table 1, it carried out similarly to Example 1, the composition was manufactured, and the laminated body was produced and evaluated. The results are shown in Table 1.

The component of Table 1 shows the following.

Reactive particle A: Preparation Example 3, median diameter 59 nm

Reactive particle B: Production Example 4, median diameter 70 nm

Reactive particle C: Production Example 5, median diameter 78 nm

Reactive particle D: Preparation Example 6, median diameter 89 nm

Biscot 700: Osaka Kagaku Co., Ltd. make, bisphenol A, EO addition product diacrylate

PETA: Shin-Nakamura Chemical Co., Ltd. make, tetramethylol methane triacrylate

Irg.907: Ciba Specialty Chemicals, Inc., 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one

From the results in Table 1, in Examples 1 and 2, in which the median diameters of the reactive particles were 70 nm and 78 nm, and containing the compound of component (B), the surface resistance was low at 10 ⁹ Ω / cm 2 order, and the highest reflectance was high. In addition, it was found that scratch resistance is also excellent. In contrast, in Comparative Example 1 in which the median diameter of the reactive particles was 59 nm, it was found that the surface resistance was high and the scratch resistance deteriorated. On the contrary, in Comparative Example 2, in which the median diameter of the reactive particles was 89 nm, the haze was high and the maximum reflectance was low. In addition, in Comparative Examples 3 and 4 which do not contain the compound of component (B), it was found that the maximum reflectance was lowered.

The curable composition of this invention is useful for manufacturing the cured film which is high in refractive index and excellent in antistatic property and abrasion resistance.

The cured film of this invention is a coating film which needs antistatic property and abrasion resistance, and is useful as a high refractive index antistatic layer of an antireflection film.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows one Embodiment of the laminated body (antireflection film) of this invention.

<Brief description of symbols for the main parts of the drawings>

1: antireflection film

2: description

3: hard coating layer

4: high refractive index antistatic layer

5: low refractive index layer

Claims (11)

Curable composition containing following component (A)-(C). (A) Particles having a polymerizable unsaturated group and having an oxide of at least one element selected from the group consisting of zinc, indium, tin and antimony having a median diameter in the range of 65 to 85 nm. (B) compounds having at least one polymerizable unsaturated group, at least one alkylene oxide chain and at least two aromatic rings (C) A compound having at least one polymerizable unsaturated group other than the components (A) and (B). The curable composition according to claim 1, wherein the compound of component (B) has a structure represented by the following general formula (B-1). <Formula B-1>

[Formula B-1, R ¹ and R ² are each a divalent hydrocarbon group of 2 to 4 carbon atoms, R ³ is a divalent hydrocarbon group of 1 to 20 carbon atoms which may have a single bond or an aromatic ring, R ⁵ to R ⁶ represents a hydrogen atom or a methyl group, R ¹⁴ and R ¹⁵ represent a hydrogen atom or a (meth) acryloyl group, at least one of q ¹⁴ R and p ¹⁵ R is a (meth) acryloyl group, m and n are 1 to 30, p is 1 to 4, and q is 0 to 4] The curable composition according to claim 1 or 2, wherein the compound of component (B) has a structure represented by the following general formula (B-2). <Formula B-2>

In Formula B-2, R ⁴ represents a hydrogen atom or a methyl group, R ¹¹ and R ¹² each represent a hydrogen atom, a methyl group or a phenyl group, R ¹³ represents a hydrogen atom or a (meth) acryloyl group, and m Each independently represent a number from 1 to 30; The curable composition according to claim 1 or 2, wherein the oxide particles of the component (A) are selected from the group consisting of antimony-containing tin oxide, tin-containing indium oxide, fluorine-containing tin oxide, and aluminum-containing zinc oxide. The curable composition according to claim 4, wherein the oxide particles of the component (A) are antimony-containing tin oxide. The curable composition according to claim 1 or 2, wherein the polymerizable unsaturated group of the component (A) contains a structure represented by the following general formula (4). <Formula 4>

[In Formula 4, U represents NH, O (oxygen atom) or S (sulfur atom), and V represents O or S.] The curable composition according to claim 1 or 2, further comprising (D) a compound that generates active species by irradiation with an active energy ray. The curable composition according to claim 1 or 2, further comprising (E) an organic solvent. The curable composition of Claim 1 or 2 whose polymerizable unsaturated group which the said component (C) has is a (meth) acryloyl group. The cured film formed by hardening | curing the curable composition of Claim 1 or 2. The laminated body which has a cured film of Claim 10 on a base material.

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