WO2016159294A1 - Active-energy-ray-curable resin composition, coating composition, and laminate - Google Patents

Abstract

Provided is an active-energy-ray-curable resin composition with which it is possible to obtain a cured coating film having excellent feel as well as exceptional wear resistance, wherein the active-energy-ray-curable resin composition is characterized by containing: a urethane (meth)acrylate compound (A), which is obtained by reacting an isocyanate compound (a1) and a hydroxyl-group-containing (meth)acrylate compound (a2); and organic fine particles (B), the ethylenic unsaturated group concentration of the active-energy-ray-curable resin composition being 1.0-6.3 mmol/g.

Description

Active energy ray-curable resin composition, coating agent composition, and laminate

The present invention relates to an active energy ray-curable resin composition, a coating agent composition, and a laminate, and more specifically, when it is used as a cured coating film, it does not have a tacky or moist feeling, has a smooth finger touch, and , An active energy ray-curable resin composition for forming a cured coating film excellent in abrasion resistance, a coating agent composition using the same, and a substrate and a coating layer comprising the coating agent composition It is related with the laminated body which has.

Conventionally, active energy ray-curable resin compositions have been widely used as coating agents for various substrates. In particular, interior parts such as home appliances and plastic panels in automobiles are required to have a high-class feel and a touch-sensitive feel, and a coating agent that can provide such a feel is required. It was.

As a coating agent that imparts a soft touch, for example, Patent Document 1 discloses an ultraviolet curable oligomer or monomer, a silicon compound having at least one functional group copolymerizable with the ultraviolet curable oligomer or monomer, a crosslinked resin particle, a reaction An ultraviolet curable leather-like paint composition comprising an initiator and a diluent added as necessary has been proposed.

JP 2006-257366 A

However, a cured coating film having a soft feel has a problem that it is easily worn due to a high coefficient of friction and has low durability, and the technique disclosed in Patent Document 1 is not satisfactory in terms of wear resistance. There wasn't. In addition, the cured coating film having a soft feel has a problem that dirt such as fingerprints easily adheres.

Therefore, the present invention provides an active energy ray-curable resin composition capable of obtaining a cured coating film having a good touch feeling and excellent wear resistance under such a background, and a coating using the same It aims at providing an agent composition and a laminated body.

However, as a result of intensive studies in view of such circumstances, the present inventor has made a urethane (meth) acrylate compound (A) obtained by reacting an isocyanate compound (a1) and a hydroxyl group-containing (meth) acrylate compound (a2). And an active energy ray-curable resin composition containing the organic fine particles (B), the use of the active energy ray-curable resin composition having an ethylenically unsaturated group concentration in a specific amount range provides good finger touch In addition, the present inventors have found that a cured coating film having excellent wear resistance can be obtained.

That is, the gist of the present invention includes a urethane (meth) acrylate compound (A) obtained by reacting an isocyanate compound (a1) and a hydroxyl group-containing (meth) acrylate compound (a2) and organic fine particles (B). An active energy ray-curable resin composition having an ethylenically unsaturated group concentration of 1.0 to 6.3 mmol / g.

The present invention also provides a coating composition comprising the active energy ray-curable resin composition, and further a laminate having a substrate and a coating layer comprising the coating composition. is there.

The active energy ray-curable resin composition of the present invention is particularly useful as a coating agent because the cured coating film has the effect of having a good touch feeling and excellent wear resistance.

The present invention is described in detail below.
In the present invention, (meth) acryl means acryl or methacryl, (meth) acryloyl means acryloyl or methacryloyl, and (meth) acrylate means acrylate or methacrylate.

The active energy ray-curable resin composition of the present invention contains a urethane (meth) acrylate compound (A) and organic fine particles (B).
Hereinafter, each component will be described.

[Urethane (meth) acrylate compound (A)]
The urethane (meth) acrylate compound (A) in the present invention is obtained by reacting an isocyanate compound (a1) and a hydroxyl group-containing (meth) acrylate compound (a2). The urethane (meth) acrylate compound (A) can be used alone or in combination of two or more.

Examples of the isocyanate compound (a1) include aromatic polyisocyanates such as tolylene diisocyanate, diphenylmethane diisocyanate, polyphenylmethane polyisocyanate, modified diphenylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, phenylene diisocyanate, and naphthalene diisocyanate. Aliphatic polyisocyanates such as hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, lysine diisocyanate, lysine triisocyanate; hydrogenated diphenylmethane diisocyanate, isophorone diisocyanate, norbornene diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, 1, 4-bis (isocyana Methyl) alicyclic polyisocyanates such as cyclohexane; or trimer compounds of these polyisocyanates or multimeric compounds, allophanate type polyisocyanate, buret type polyisocyanate, and the like. An isocyanate type compound (a1) can be used individually or in combination of 2 or more types.

Among these, aliphatic diisocyanates such as hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, lysine diisocyanate, hydrogenated diphenylmethane diisocyanate, isophorone diisocyanate, norbornene diisocyanate, 1,3-bis (isocyanatomethyl) are less yellowed. ) Cycloaliphatic diisocyanates such as cyclohexane and 1,4-bis (isocyanatomethyl) cyclohexane are preferred, particularly preferably isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, hexamethylene. Diisocyanate, more preferably isophorone diisocyanate and hexamethylene diisocyanate in terms of excellent reactivity and versatility. It is a door.

Examples of the hydroxyl group-containing (meth) acrylate compound (a2) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and 4-hydroxybutyl (meth). Acrylates, hydroxyalkyl (meth) acrylates such as 6-hydroxyhexyl (meth) acrylate, 2-hydroxyethyl acryloyl phosphate, 2- (meth) acryloyloxyethyl-2-hydroxypropyl phthalate, caprolactone-modified 2-hydroxyethyl (meth) ) Acrylate, dipropylene glycol (meth) acrylate, fatty acid modified-glycidyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) ) Acrylate, 2-hydroxy-3- (meth) acryloyloxypropyl (meth) acrylate, and other hydroxyl-containing (meth) acrylate compounds containing one ethylenically unsaturated group; glycerin di (meth) acrylate, 2 Hydroxyl-containing (meth) acrylate compounds containing two ethylenically unsaturated groups such as hydroxy-3-acryloyl-oxypropyl methacrylate; pentaerythritol tri (meth) acrylate, caprolactone-modified pentaerythritol tri (meth) acrylate, ethylene Oxide modified pentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, caprolactone modified dipentaerythritol penta (meth) acrylate, ethylene oxide modified dipenta Hydroxyl group-containing (meth) acrylate compound containing an ethylenically unsaturated group such Risuri penta (meth) acrylate three or more can be mentioned. The hydroxyl group-containing (meth) acrylate compound (a2) can be used alone or in combination of two or more.

Among these, a hydroxyl group-containing (meth) acrylate-based compound containing three or more ethylenically unsaturated groups is preferable in terms of excellent reactivity and versatility, and excellent abrasion resistance of the cured coating film, and pentaerythritol tri ( Particularly preferred are (meth) acrylate and dipentaerythritol penta (meth) acrylate.

The production method of the urethane (meth) acrylate compound (A) used in the present invention is a functional group of the isocyanate group of the isocyanate compound (a1) and the hydroxyl group of the hydroxyl group-containing (meth) acrylate compound (a2). It can be obtained by adjusting the molar ratio and reacting the isocyanate compound (a1) with the hydroxyl group-containing (meth) acrylate compound (a2) using a catalyst such as dibutyltin dilaurate as necessary.

Specifically, the reaction molar ratio between the isocyanate compound (a1) and the hydroxyl group-containing (meth) acrylate compound (a2) is, for example, that the isocyanate compound (a1) has two isocyanate groups and the hydroxyl group-containing (meta When the acrylate compound (a2) has one hydroxyl group, the isocyanate compound (a1): hydroxy group-containing (meth) acrylate compound (a2) is about 1: 2 to 1: 5, and the isocyanate compound When (a1) has three isocyanate groups and hydroxyl group-containing (meth) acrylate compound (a2) has one hydroxyl group, isocyanate compound (a1): hydroxyl group-containing (meth) acrylate compound (a2) Is about 1: 3 to 1:10.

In the addition reaction between the isocyanate compound (a1) and the hydroxyl group-containing (meth) acrylate compound (a2), the reaction is terminated when the residual isocyanate group content in the reaction system is 0.5% by weight or less. Thus, a urethane (meth) acrylate compound (A) is obtained.

In the reaction between the isocyanate compound (a1) and the hydroxyl group-containing (meth) acrylate compound (a2), it is also preferable to use a catalyst for the purpose of accelerating the reaction. Examples of the catalyst include dibutyltin dilaurate and dibutyl. Tin diacetate, dioctyltin laurate, trimethyltin hydroxide, tetra-n-butyltin, zinc bisacetylacetonate, zirconium tris (acetylacetonate) ethylacetoacetate, zirconium tetraacetylacetonate, tetramethoxytitanium, tetraethoxytitanium , Organometallic compounds such as tetraisopropoxy titanium, tetrabutoxy titanium, tetramethoxy zirconium, tetraethoxy zirconium, tetraisopropoxy zirconium, tetrabutoxy zirconium Metal salts such as tin octenoate, zinc hexanoate, zinc octenoate, zinc stearate, zirconium 2-ethylhexanoate, cobalt naphthenate, stannous chloride, stannic chloride, potassium acetate; triethylamine, triethylenediamine, benzyl Diethylamine, 1,4-diazabicyclo [2,2,2] octane, 1,8-diazabicyclo [5,4,0] undecene, N, N, N ′, N′-tetramethyl-1,3-butanediamine, Amine-based catalysts such as N-methylmorpholine, N-ethylmorpholine, diazabicyclononene; bismuth nitrate, bismuth bromide, bismuth iodide, bismuth sulfide, etc., and organic bismuth compounds such as dibutyl bismuth dilaurate, dioctyl bismuth dilaurate; 2-ethylhexanoic acid bismuth salt, naphthenic acid bismuth salt Bismuth isodecanoate, bismuth neodecanoate, bismuth laurate, bismuth maleate, bismuth stearate, bismuth oleate, bismuth linoleate, bismuth acetate, bismuth bisneodecanoate, bismuth disalicylate And bismuth catalysts such as organic acid bismuth salts such as bismuth digallate. Among them, dibutyltin dilaurate and 1,8-diazabicyclo [5,4,0] undecene are preferable. These may be used alone or in combination of two or more.

In the reaction between the isocyanate compound (a1) and the hydroxyl group-containing (meth) acrylate compound (a2), an organic solvent having no functional group that reacts with the isocyanate group, for example, an ester such as ethyl acetate or butyl acetate. , Organic solvents such as ketones such as methyl ethyl ketone and methyl isobutyl ketone, and aromatics such as toluene and xylene can be used.

The urethane (meth) acrylate compound (A) used in the present invention preferably has an ethylenically unsaturated group concentration (mmol / g) of 1.0 mmol / g or more, more preferably 1.5 to 6 0.3 mmol / g, particularly preferably 2.5 to 5.8 mmol / g.
When the ethylenically unsaturated group concentration (mmol / g) of the urethane (meth) acrylate compound (A) is too low, the crosslinking density in the cured coating film tends to be lowered, and the wear resistance tends to be lowered. There is a tendency that the adhesion between the coating film and the substrate is lowered by curing shrinkage, the distortion of the resin part in the coating film is increased, and the appearance of the coating film is deteriorated.

In addition, the ethylenically unsaturated group density | concentration of a urethane (meth) acrylate type compound (A) can be calculated by following formula (1), for example.
[Formula (1)] Ethylenically unsaturated group concentration (mmol / g) of urethane (meth) acrylate compound (A) = ethylenically unsaturated group concentration (mmol / g) of hydroxyl group-containing (meth) acrylate compound (a2) g) × (weight of hydroxyl group-containing (meth) acrylate compound (a2) in urethane (meth) acrylate compound (A) / weight of urethane (meth) acrylate compound (A))

The urethane (meth) acrylate compound (A) used in the present invention preferably has 2 to 15 ethylenically unsaturated groups from the viewpoint of imparting abrasion resistance to the cured coating film. The number is preferably 3 to 10. If the number of such ethylenically unsaturated groups is too large, the crosslinking density after curing becomes too large, the adhesion between the coating film and the substrate deteriorates due to curing shrinkage, or the distortion of the resin part in the coating film increases, The coating film appearance tends to deteriorate, and if it is too small, it is difficult to obtain a sufficient crosslinking density, so that the surface of the cured coating film tends to be sticky or wear resistance tends to decrease.

The weight average molecular weight of the urethane (meth) acrylate compound (A) used in the present invention is preferably 1,000 to 50,000, particularly preferably 1,200 to 30,000, particularly preferably 1. , 500 to 20,000.
If the weight average molecular weight is too small, the cross-linking density is relatively increased, so that the surface of the cured coating film becomes too hard, and the adhesion between the coating film and the substrate decreases due to curing shrinkage. The distortion tends to increase and the appearance of the coating film tends to be poor. If it is too large, a sufficient crosslinking density cannot be obtained, and the surface of the cured coating film tends to be sticky or wear resistance tends to decrease.

In addition, said weight average molecular weight is a weight average molecular weight by standard polystyrene molecular weight conversion, a column is put into a high performance liquid chromatography (Nippon Waters Co., Ltd., "Waters 2695 (main body)" and "Waters 2414 (detector)"). (Shodex GPD KF-806L (exclusion limit molecular weight: 2 × 10 ⁷ , separation range: 100 to 2 × 10 ⁷ , theoretical plate number: 10,000 plates / piece, filler material: styrene-divinylbenzene copolymer, filler) It is measured by using three series of particle diameters: 10 μm)).

The viscosity at 60 ° C. of the urethane (meth) acrylate compound (A) used in the present invention is preferably 500 to 100,000 mPa · s, particularly preferably 1,000 to 50,000 mPa · s. When the viscosity is out of the above range, the coatability tends to be lowered.
In addition, the measuring method of a viscosity is based on an E-type viscometer.

In addition, in the active energy ray-curable resin composition of the present invention, when the polysiloxane structure-containing urethane (meth) acrylate compound (C) described later is contained, the urethane (meth) acrylate compound (A) The siloxane structure-containing urethane (meth) acrylate compound (C) is excluded.

[Organic fine particles (B)]
Examples of the organic fine particles (B) in the present invention include nitrogen atom-containing organic fine particles such as nylon filler, polyurethane filler, polyurea filler, polyamideimide filler, and polyacrylamide filler; polyolefin resin filler such as polyethylene filler and polypropylene filler; (Meth) acrylic filler, polybutyl (meth) acrylic filler, (meth) acrylic group-containing organic fine particles composed of a single polymerization component such as polystyrene filler, (meth) acrylic group-containing organic fine particles composed of two or more polymerization components, etc. (Meth) acrylic synthetic resin filler; sulfur atom-containing synthetic resin filler such as polyphenylene sulfide filler and polyethersulfone filler; fluorine atom-containing organic fine particles such as polytetrafluoroethylene filler; Epoxy group-containing organic fine particles made of epoxy resin; organic fine particles composed of a fatty acid-based polymers; polycarbonate resin filler; hybrid organic fine particles of the filler, the core-shell-shaped multilayer filler and the like. These organic fine particles can be used individually by 1 type or in combination of 2 or more types.

Among these, polyolefin resin filler, polyurethane filler, organic fine particles composed of a fatty acid polymer are preferable because they have easy dispersibility in the resin solution,
Furthermore, organic fine particles made of a fatty acid polymer are preferable in that a certain elasticity can be imparted to the cured coating film and a smooth touch feeling can be imparted.

Examples of the nylon filler include those manufactured by Toray Industries, Inc. (trade names: “SP-10”, “SP-500”, “TR-1”, “TR-2”, “842-P48”, “842-P70”). , “842-P80”), manufactured by Arkema (trade names: “Orgasol 4000EXD NAT COS”, “Orgasol 2022EXD NAT COS”), and the like.

Examples of the polyurethane filler include crosslinked urethane beads manufactured by Negami Kogyo Co., Ltd. (trade names; “Art Pearl D Series”, “Art Pearl P Series”, “Art Pearl JC Series”, “Art Pearl U Series”, “Art”. “Pearl DE Series”, “Art Pearl AK Series”, “Art Pearl HI Series”, “Art Pearl MM Series”, “Art Pearl FF Series”, “Art Pearl TK Series”, “Art Pearl D-TH Series”, “ Art Pearl RW-Z series "," Art Pearl RU-V series "," Art Pearl CP series ").

Examples of the polyamideimide resin filler include those manufactured by Toray Industries, Inc. (trade name: “Trepearl PAI”).

The polyethylene filler is preferably a solvent-dispersed polyethylene filler. For example, polyethylene wax and modified polyethylene wax (trade names; “Micro Flat UN-8”, “Micro Flat PEX-101” manufactured by Koyo Chemical Co., Ltd.) , "Micro Flat C-501"), polyethylene wax manufactured by Big Chemie Japan, and modified polyethylene wax (trade names: "DERAFLOUR928", "DERAFLOUR950", "DERAFLOUR988", "DERAFLOUR990", "DERAFLOUR991", "DERAFLOUR9999") ”,“ DERADOL39 ”,“ DERAFAK111 ”,“ DELAMAT250 ”,“ DELAMAT258 ”,“ MINERPOL221 ”,“ CE ” AMAT258 "), and the like.

The above-mentioned polypropylene filler is preferably a solvent dispersion type, and examples thereof include a polypropylene wax manufactured by Big Chemie Japan, a modified polypropylene wax (trade name: “DERAFLOUR970”), and the like.

Examples of the (meth) acrylic group-containing organic fine particles include acrylic beads manufactured by Negami Kogyo Co., Ltd. (trade names: “Art Pearl GR Series”, “Art Pearl SE Series”, “Art Pearl G Series”, “Art Pearl GS”. Series ”,“ Art Pearl J Series ”,“ Art Pearl MF Series ”,“ Art Pearl CE Series ”) and the like. Among these, transparent fine particles are preferable as those capable of obtaining a transparent to white coating film as a cured coating film without impairing photocurability, and those having a white appearance as a fine particle appearance are preferable.

Examples of the sulfur atom-containing synthetic resin filler include polyphenylene sulfide resin fine particles (trade name: “Trepearl PPS”), polyethersulfone resin (trade name: “Trepearl PES”) manufactured by Toray Industries, Inc., and the like.

As the fluorine atom-containing organic fine particles, for example, polyethylene and polytetrafluoroethylene mixed wax manufactured by Koyo Chemical Co., Ltd. (trade name: “Micro Flat PF-8”), polytetrafluoro manufactured by Big Chemie Japan Co., Ltd. Ethylene wax (trade names: “DERAFLOUR 980”, “DERAFLOUR 981”), polyethylene-polytetrafluoroethylene mixed wax (trade name: “DERAFLOUR 997”), polytetrafluoroethylene-modified polyethylene wax (trade name: “DERAFLOUR 998”, “ DERADOL607 ”), polytetrafluoroethylene fine particles (trade names:“ KTL-8N ”,“ KTL-8F ”,“ KTL-9S ”,“ KTL-10N ”,“ KTL-20N ”) manufactured by Kitamura Co., Ltd. It is below.

Examples of the organic fine particles composed of the fatty acid polymer include polymer fine particles composed of a polyhydroxyalkanoate derivative, and specifically include 3-hydroxybutyrate, a co-polymer of 3-hydroxybutyrate and 3-hydroxyvalerate. Examples thereof include a polymerization compound, a copolymer compound of 3-hydroxybutyrate and 3-hydroxyhexanoate, and a copolymer compound of 3-hydroxybutyrate and 4-hydroxybutyrate.

Examples of the epoxy group-containing organic fine particles include those manufactured by Toray Industries, Inc. (trade name: “Trepearl EP”).

Examples of the polycarbonate resin filler include (trade name: “Micro Flat MA-07N”) manufactured by Koyo Chemical Co., Ltd.

The particle size of the organic fine particles (B) in the present invention is preferably such that the 50% particle size (D50) in particle size distribution measurement by laser diffraction (ISO 13320) is 0.1 to 25 μm, particularly preferably 0.5 to It is 20 μm, more preferably 1 to 10 μm.
If the 50% particle size is too small, the gloss of the cured coating film tends to be high, and there is a tendency that it is difficult to feel a high-grade appearance. If the particle size is too large, the wear contact becomes large and the wear resistance is reduced. Since the unevenness of the surface becomes large and rough, it tends to be difficult to obtain a smooth touch feeling.

The true specific gravity of the organic fine particles (B) is preferably 0.8 to 2.3, particularly preferably 0.9 to 2, and more preferably 1 to 1.5.
If the true specific gravity is too large, fine particles settle in the drying step after coating, and there is a tendency that the surface unevenness does not appear, and if it is too small, mixing of the urethane (meth) acrylate compound (A) tends to be difficult. .

The content of the organic fine particles (B) in the present invention is preferably 5 to 100 parts by weight, particularly preferably 10 to 75 parts by weight with respect to 100 parts by weight of the urethane (meth) acrylate compound (A). More preferably, it is 15 to 50 parts by weight. If the content of the organic fine particles (B) is too large, the fine particles fall off from the cured coating film, and the coating film surface tends to be rough. If the content is too small, a smooth touch feeling tends to be difficult to obtain.

In addition, when the organic fine particles (B) are a dispersion such as a solvent in the above-mentioned content definition, the weight is specified as a weight in terms of solid content.

[Active energy ray-curable resin composition]
The active energy ray-curable resin composition of the present invention contains a urethane (meth) acrylate compound (A) and organic fine particles (B).

[Polysiloxane structure-containing urethane (meth) acrylate compound (C)]
In the active energy ray-curable resin composition of the present invention, from the viewpoint of compatibility, the polysiloxane structure-containing urethane (meth) acrylate compound (C) (hereinafter referred to as “urethane (meth) acrylate compound (C)”) May be described)).

The urethane (meth) acrylate compound (C) used in the present invention only needs to contain a polysiloxane structure in its structure. For example, a polysiloxane compound (c1) having a hydroxyl group and an isocyanate compound ( Examples thereof include compounds obtained by reacting c2) with a hydroxyl group-containing (meth) acrylate compound (c3) and, if necessary, a polyol compound (c4).

As the polysiloxane compound (c1) having a hydroxyl group, a known general polysiloxane compound can be used. For example, a polysiloxane compound having a hydroxyl group at one end represented by the following general formula (1) or the following Examples thereof include polysiloxane compounds having hydroxyl groups at both ends represented by the general formula (2). Among them, the compound represented by the following general formula (2) is excellent in reaction control with the polyvalent isocyanate compound (c2). A polysiloxane compound having hydroxyl groups at both ends is preferred.
In addition, the said urethane (meth) acrylate type compound (C) may have a structure site | part derived from both general formula (1) and (2).

[Wherein, R ¹ represents an alkyl group, R ² independently represents an alkyl group, a cycloalkyl group or a phenyl group, and R ³ represents a hydrocarbon group or an organic group containing a hetero atom. a is an integer of 1 or more, and b is an integer of 1 to 3. ]

[Wherein R ¹ and R ³ represent a hydrocarbon group or an organic group containing a hetero atom, R ² independently represents an alkyl group, a cycloalkyl group or a phenyl group, and a is an integer of 1 or more, b and c are integers of 1 to 3. ]

As an example of the urethane (meth) acrylate compound (C) of the present invention, first, a polysiloxane compound having a hydroxyl group at one end represented by the general formula (1) (hereinafter referred to as “polysiloxane compound (c1-1)”. The urethane (meth) acrylate compound (C1) obtained using “)” is described.

The urethane (meth) acrylate compound (C1) includes a polysiloxane compound (c1-1), an isocyanate compound (c2), a hydroxyl group-containing (meth) acrylate compound (c3), and a polyol as necessary. It is obtained by reacting a system compound (c4).

For such a polysiloxane compound (c1-1), R ¹ in the general formula (1) is an alkyl group, and the alkyl group preferably has a relatively short carbon number. Specifically, it usually has 1 to 15 carbon atoms, preferably 1 to 10 carbon atoms, particularly preferably 1 to 5 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and a butyl group.

R ² in the general formula (1) is each independently an alkyl group, a cycloalkyl group, or a phenyl group.
The alkyl group preferably has a relatively short carbon number. Specifically, it usually has 1 to 15 carbon atoms, preferably 1 to 10 carbon atoms, particularly preferably 1 to 5 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and a butyl group.
The carbon number of the cycloalkyl group is usually 3 to 10, preferably 5 to 8, and examples thereof include a cyclopentyl group, a cyclohexyl group, and a norbornyl group.

The alkyl group, cycloalkyl group, and phenyl group may have a substituent. Examples of the substituent usually include a halogen atom, a hydroxyl group, an alkoxy group, an amino group, a mercapto group, a sulfanyl group, a vinyl group, an acryloxy group, a methacryloxy group, an aryl group, and a heteroaryl group. In the case where the substituent has a carbon atom, said carbon atom shall not included in the number of carbon atoms is specified in the description of the R ^2.

R ³ in the general formula (1) is a hydrocarbon group or an organic group containing a hetero atom.
The hydrocarbon group usually has 1 to 30 carbon atoms, preferably 1 to 20 carbon atoms, and examples thereof include divalent or trivalent hydrocarbon groups.
Examples of the divalent hydrocarbon group include an alkylene group. The alkylene group preferably has 1 to 10 carbon atoms, particularly preferably 1 to 4 carbon atoms, and examples thereof include an ethylene group, a propylene group, and a tetramethylene group.
Examples of the organic group containing a hetero atom include an oxyalkylene group, a polyoxyalkylene group, a polycaprolactone group, and an amino group.

A in the general formula (1) is an integer of 1 or more, preferably 5 to 200, particularly preferably an integer of 5 to 120. b is an integer of 1 to 3, and preferably an integer of 1 to 2.

The weight average molecular weight of the polysiloxane compound (c1-1) used in the present invention is usually preferably 100 to 50,000, particularly 500 to 10,000, and more preferably 1,000 to 10,000. It is preferable that If the weight average molecular weight is too low, the antifouling performance and chemical resistance tend to decrease, and if it is too high, the compatibility decreases, the coating agent tends to become cloudy, or the haze of the cured coating film tends to increase. .

Specific examples of the polysiloxane compound (c1-1) having a hydroxyl group at one end are, for example, manufactured by Shin-Etsu Chemical Co., Ltd. (trade names: “X-22-170BX”, “X-22-170DX”, “X -22-176DX "," X-22-176F "), manufactured by Chisso Corporation (trade names;" Silaplane FM-0411 "," Silaplane FM-0421 "," Silaplane FM-0425 "," Silaplane FM -DA11 "," Silaplane FM-DA21 "," Silaplane FM-DA26 ") and the like.

As an isocyanate type compound (c2), the thing similar to what was illustrated as an isocyanate type compound (a1) in the description regarding the said urethane (meth) acrylate type compound (A) is mentioned, for example.
Among these, an isocyanate compound having 3 or more isocyanate groups in one molecule, particularly a polyisocyanate trimer or multimer compound, is more preferable in terms of reducing the amount of unreacted low molecular weight components.

Examples of the hydroxyl group-containing (meth) acrylate compound (c3) are the same as those exemplified as the hydroxyl group-containing (meth) acrylate compound (a2) in the description of the urethane (meth) acrylate compound (A). Can be mentioned.
Among these, pentaerythritol tri (meth) acrylate and dipentaerythritol penta (meth) acrylate are preferred because they can be fixed to the cured coating film by having more crosslinking points and maintain antifouling performance.

Furthermore, a polyol compound (c4) may be used as long as the effects of the present invention are not impaired. For example, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, neopentyl glycol, 1,2-butanediol, 1 , 3-butanediol, 2,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 1,8-octane Diol, 1,9-nonanediol, 2,2-dimethylolheptane, hydrogenated bisphenol A, hydroxyalkylated bisphenol A, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol N, N-bis- (2-hydroxyethyl) dimethylhydan Low molecular weight polyols such as in, glycerin, sorbitol, trimethylolethane, trimethylolpropane, trimethylolbutane, hexanetriol, pentaerythritol, dipentaerythritol, tris- (hydroxyethyl) isocyanurate; polyether polyols, polyester polyols , Polycarbonate polyol, polyolefin polyol, polybutadiene polyol, (meth) acrylic polyol, polycaprolactone polyol, polyurethane polyol and the like.

Examples of the polyether polyol include, for example, polyether glycols containing an alkylene structure such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polybutylene glycol, and polyhexamethylene glycol, and random or block copolymers of these polyalkylene glycols. Coalescence is mentioned.

Examples of the polyester-based polyol include three types of components: a condensation polymer of a polyhydric alcohol and a polycarboxylic acid; a ring-opening polymer of a cyclic ester (lactone); a polyhydric alcohol, a polycarboxylic acid, and a cyclic ester. And the like.

Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, trimethylene glycol, 1,4-tetramethylene diol, 1,3-tetramethylene diol, 2-methyl-1,3-trimethyl. Methylene diol, 1,5-pentamethylene diol, neopentyl glycol, 1,6-hexamethylene diol, 3-methyl-1,5-pentamethylene diol, 2,4-diethyl-1,5-pentamethylene diol, glycerin , Trimethylolpropane, trimethylolethane, cyclohexanediols (such as 1,4-cyclohexanediol), bisphenols (such as bisphenol A), and sugar alcohols (such as xylitol and sorbitol).
Examples of the polyvalent carboxylic acid include aliphatic dicarboxylic acids such as malonic acid, maleic acid, fumaric acid, succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, and dodecanedioic acid; -Alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid; aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, orthophthalic acid, 2,6-naphthalenedicarboxylic acid, paraphenylenedicarboxylic acid, trimellitic acid, and the like.
Examples of the cyclic ester include propiolactone, β-methyl-δ-valerolactone, and ε-caprolactone.

The weight average molecular weight of the polyol compound (c4) is preferably 50 to 8,000, particularly preferably 70 to 5,000, and further preferably 90 to 3,000. If the weight average molecular weight of the polyol (c4) is too large, mechanical properties such as coating film hardness tend to be reduced during curing, and if it is too small, the viscosity tends to increase during production and stability tends to be lowered.

The urethane (meth) acrylate compound (C1) preferably has one or more ethylenically unsaturated groups, and has three or more ethylenically unsaturated groups in terms of the hardness of the cured coating film. It is particularly preferable that it has 6 or more ethylenically unsaturated groups.
Moreover, the upper limit of the number of ethylenically unsaturated groups which a urethane (meth) acrylate type compound (C1) contains is 30 normally, Preferably it is 25 or less.

As a manufacturing method of a urethane (meth) acrylate type compound (C1), it is not specifically limited, for example,
(I): polysiloxane compound (c1-1), isocyanate compound (c2) (isocyanate compound (c2) previously reacted with polyol compound (c4) if necessary), hydroxyl group-containing (meta ) A method in which the acrylate compound (c3) is charged and reacted together,
(Ii): after reacting a polysiloxane compound (c1-1) and an isocyanate compound (c2) (if necessary, an isocyanate compound (c2) previously reacted with a polyol compound (c4)) , A method of reacting a hydroxyl group-containing (meth) acrylate compound (c3),
(Iii): Isocyanate compound (c2) (if necessary, the isocyanate compound (c2) previously reacted with the polyol compound (c4)) and the hydroxyl group-containing (meth) acrylate compound (c3) are reacted. And then reacting the polysiloxane compound (c1-1),
(Iv): Isocyanate compound (c2) (if necessary, isocyanate compound (c2) previously reacted with polyol compound (c4)) and a part of hydroxyl group-containing (meth) acrylate compound (c3) After reacting the polysiloxane compound (c1-1), and further reacting the remaining hydroxyl group-containing (meth) acrylate compound (c3),
Among these, among these, the method (ii) or (iv) is preferred, and the method (ii) is particularly preferred from the viewpoint of stability of reaction control and compatibility.

In addition, what is necessary is just to follow the manufacture example of a well-known general urethane type polyol, for example, when making a polyol type compound (c4) and an isocyanate type compound (c2) react previously.

In the method (ii), the hydroxyl group of the polysiloxane compound (c1-1) and the isocyanate group of the isocyanate compound (c2) are reacted under the conditions that leave the isocyanate group, and then the isocyanate compound ( The residual isocyanate group in c2) is reacted with the hydroxyl group of the hydroxyl group-containing (meth) acrylate compound (c3).

The reaction molar ratio between the polysiloxane compound (c1-1) and the isocyanate compound (c2) is, for example, that the polysiloxane compound (c1) has one hydroxyl group and the isocyanate compound (c2) has 2 isocyanate groups. In the case of polysiloxane compound (c1-1): isocyanate compound (c2) = 1: 0.8 to 1:10, and one polysiloxane compound (c1-1) has one hydroxyl group. In the case where the isocyanate compound (c2) has three isocyanate groups, the polysiloxane compound (c1): isocyanate compound (c2) may be about 1: 0.2 to 1: 5.

In the addition reaction between the reaction product and the hydroxyl group-containing (meth) acrylate compound (c3), the reaction is terminated when the residual isocyanate group in the reaction system is 0.5% by weight or less. ) An acrylate compound (C1) is obtained.

The weight of the structural portion derived from the polysiloxane compound (c1-1) contained in 100 parts by weight of the urethane (meth) acrylate compound (C1) is 0.1 to 80 within the above molar ratio range. It is preferable that it is a weight part.

In the above reaction, it is also preferable to use a catalyst for the purpose of accelerating the reaction. As such a catalyst, the same catalyst as that which can be used in the method for producing the urethane (meth) acrylate compound (A) is used. be able to.

In the above reaction, an organic solvent having no functional group that reacts with an isocyanate group, for example, esters such as ethyl acetate and butyl acetate, ketones such as methyl ethyl ketone and methyl isobutyl ketone, and aromatics such as toluene and xylene An organic solvent such as can be used. These organic solvents can be used individually by 1 type or in combination of 2 or more types.

The reaction temperature of the above reaction is usually 30 to 100 ° C., preferably 40 to 90 ° C., and the reaction time is usually 2 to 10 hours, preferably 3 to 8 hours.

The weight average molecular weight of the urethane (meth) acrylate compound (C1) thus obtained is usually preferably 500 to 50,000, and more preferably 500 to 30,000. If the weight average molecular weight is too small, the antifouling property and chemical resistance tend to decrease, and if too large, the coating property tends to decrease.

The viscosity at 20 ° C. of a 50 wt% butyl acetate solution of the urethane (meth) acrylate compound (C1) is preferably 1 to 5,000 mPa · s, particularly 2 to 2,500 mPa · s, and more preferably 3 It is preferably ˜1,000 mPa · s. When the viscosity is out of the above range, the coatability tends to be lowered.
The viscosity is measured using a B-type viscometer.

Next, a urethane obtained by using a polysiloxane compound having hydroxyl groups at both ends represented by the general formula (2) (hereinafter sometimes referred to as “polysiloxane compound (c1-2)”). The (meth) acrylate compound (C2) will be described.

The urethane (meth) acrylate compound (C2) includes a polysiloxane compound (c1-2), an isocyanate compound (c2), a hydroxyl group-containing (meth) acrylate compound (c3), and a polyol as necessary. It is obtained by reacting a system compound (c4).

In the polysiloxane compound (c1-2), R ¹ and R ³ in the general formula (2) are a hydrocarbon group or an organic group containing a hetero atom.
The hydrocarbon group usually has 1 to 100 carbon atoms, preferably 1 to 25 carbon atoms, particularly preferably 1 to 5 carbon atoms, and examples thereof include divalent or trivalent hydrocarbon groups.
Examples of the divalent hydrocarbon group include an alkylene group. The alkylene group preferably has 1 to 10 carbon atoms, particularly preferably 1 to 4 carbon atoms, and examples thereof include an ethylene group, a propylene group, and a tetramethylene group.
Examples of the organic group containing a hetero atom include an oxyalkylene group, a polyoxyalkylene group, a polycaprolactone group, and an amino group.

R ² in the general formula (2) is each independently an alkyl group, a cycloalkyl group, or a phenyl group.
The alkyl group preferably has a relatively short carbon number. Specifically, it usually has 1 to 15 carbon atoms, preferably 1 to 10 carbon atoms, particularly preferably 1 to 5 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and a butyl group.
The carbon number of the cycloalkyl group is usually 3 to 10, preferably 5 to 8, and examples thereof include a cyclopentyl group, a cyclohexyl group, and a norbornyl group.

The alkyl group, cycloalkyl group, and phenyl group may have a substituent. Examples of the substituent usually include a halogen atom, a hydroxyl group, an alkoxy group, an amino group, a mercapto group, a sulfanyl group, a vinyl group, an acryloxy group, a methacryloxy group, an aryl group, and a heteroaryl group. In the case where the substituent has a carbon atom, said carbon atom shall not included in the number of carbon atoms is specified in the description of the R ^2.

A in the general formula (2) is an integer of 1 or more, preferably 5 to 200, particularly preferably an integer of 5 to 120. b and c are an integer of 1 to 3, preferably an integer of 1 to 2.

The weight average molecular weight of the polysiloxane compound (c1-2) having hydroxyl groups at both ends is usually preferably 100 to 50,000, particularly 500 to 10,000, more preferably 1,000 to 10,000. 000 is preferred. If the weight average molecular weight is too low, the antifouling performance and chemical resistance tend to decrease, and if it is too high, the compatibility decreases, the coating agent tends to become cloudy, or the haze of the cured coating film tends to increase. .

Specific examples of the polysiloxane compound (c1-2) having hydroxyl groups at both ends include those manufactured by Shin-Etsu Chemical Co., Ltd. (trade names: “KF-6001”, “KF-6002”, “KF-6003”), JNC Manufactured by Asahi Kasei Wacker Silicone Co., Ltd. (trade names; “IM15”, “IM22”, “CT5000M”, “CT6000M”), Momentive (trade names; “Silaplane FM-4421”, “Silaplane FM-4425”) -Performance Materials Japan (trade name; "XF42-B0970"), Toray Dow Corning (trade name; "BY16-004", "SF8427"), Toagosei Co., Ltd. (trade name; " Macromonomer HK-20 ", manufactured by GELEST (trade names;" DMS-C21 "," DMS-C23 "," DBL-C31 ") "," DMS-CA21 ") and the like.

The urethane (meth) acrylate compound (C2) preferably has 2 or more ethylenically unsaturated groups, and has 4 or more ethylenically unsaturated groups in terms of the hardness of the cured coating film. It is particularly preferable that it has 6 or more ethylenically unsaturated groups.
Moreover, the upper limit of the number of ethylenically unsaturated groups which a urethane (meth) acrylate type compound (C2) contains is 30 normally, Preferably it is 25 or less.

It does not specifically limit as a manufacturing method of a urethane (meth) acrylate type compound (C2), For example, the method similar to the method described in the description regarding the said urethane (meth) acrylate (C1) is mentioned. However, among these, the method (ii) or (iv) is preferable, and the method (ii) is particularly preferable from the viewpoint of stability of reaction control and compatibility.

In the method (ii), the hydroxyl group of the polysiloxane compound (c1-2) and the isocyanate group of the isocyanate compound (c2) are reacted under the conditions in which the isocyanate group remains, and then the isocyanate compound ( The residual isocyanate group of c2) is reacted with the hydroxyl group of the hydroxyl group-containing (meth) acrylate compound (c3).

The reaction molar ratio between the polysiloxane compound (c1-2) and the isocyanate compound (c2) is, for example, that the polysiloxane compound (c1-2) has two hydroxyl groups and the isocyanate group of the isocyanate compound (c2). Is about 2, polysiloxane compound (c1-2): isocyanate compound (c2) = 1: 1.1 to 1: 2.2, and polysiloxane compound (c1-2) When the number of hydroxyl groups is 2 and the number of isocyanate groups of the isocyanate compound (c2) is 3, the polysiloxane compound (c1-2): isocyanate compound (c2) = 1: 0.5 to 1: 2. It may be about 2.

In the addition reaction between the reaction product and the hydroxyl group-containing (meth) acrylate compound (c3), the reaction is terminated when the residual isocyanate group in the reaction system is 0.5% by weight or less. ) An acrylate compound (C2) is obtained.

The weight of the structural portion derived from the polysiloxane compound (c1-2) contained in 100 parts by weight of the urethane (meth) acrylate compound (C2) is 0.1 to 80 weights within the above molar ratio range. Part.

In the above reaction, as in the case of the urethane (meth) acrylate (C1), it is also preferable to use a catalyst for the purpose of promoting the reaction, and an organic solvent having no functional group that reacts with an isocyanate group is used. Can be used.

The reaction temperature of the above reaction is usually 30 to 100 ° C., preferably 40 to 90 ° C., and the reaction time is usually 2 to 10 hours, preferably 3 to 8 hours.

The weight average molecular weight of the urethane (meth) acrylate compound (C2) thus obtained is usually preferably from 500 to 50,000, and more preferably from 2,000 to 30,000. If the weight average molecular weight is too small, the antifouling property and chemical resistance tend to decrease, and if too large, the coating property tends to decrease.

The viscosity at 20 ° C. of a 50% by weight butyl acetate solution of the urethane (meth) acrylate compound (C2) is preferably 1 to 5,000 mPa · s, particularly 2 to 2,500 mPa · s, and more preferably 3 It is preferably ˜1,000 mPa · s. If the viscosity is outside the above range, the compatibility tends to decrease.
The viscosity is measured using a B-type viscometer.

Thus, the urethane (meth) acrylate compound (C) of the present invention is obtained. The said urethane (meth) acrylate type compound (C) may be used individually by 1 type, and may use 2 or more types together.

The urethane (meth) acrylate compound (C) preferably has a silicon atom content of from 0.1 to 80% by weight, particularly preferably from 0.3 to 60% by weight, more preferably 0, based on the whole (C). .5 to 30% by weight.
If the silicon atom content is too high, the compatibility with other components tends to decrease. If the silicon atom content is too low, the blending amount required for improving the antifouling property increases, making it difficult to balance the physical properties of the coating film. Tend to be.

The content of the urethane (meth) acrylate compound (C) is preferably 0.001 to 1 part by weight, more preferably 0.01 to 100 parts by weight of the urethane (meth) acrylate compound (A). Is 0.5 to 0.5 parts by weight, particularly preferably 0.01 to 0.3 parts by weight. If the content is too large, the foam of the resin solution is stabilized, the bubbles at the time of mixing hardly disappear and tend to adversely affect the coating, and if it is too small, the antifouling property tends not to be sufficiently obtained.

Furthermore, in the active energy ray-curable resin composition of the present invention, if necessary, ethylenic compounds other than the urethane (meth) acrylate compound (A) and the polysiloxane structure-containing urethane (meth) acrylate compound (C). Unsaturated monomer (D) (hereinafter sometimes referred to as “ethylenically unsaturated monomer (D”)), photopolymerization initiator (E), acrylic resin, surface conditioner, leveling agent, polymerization inhibitor, etc. Furthermore, oils, antioxidants, flame retardants, antistatic agents, fillers, stabilizers, reinforcing agents, matting agents, abrasives, organic fine particles, inorganic particles, etc. may be added. Is possible.

[Ethylenically unsaturated monomer (D)]
As said ethylenically unsaturated monomer (D), a monofunctional monomer, a bifunctional monomer, a trifunctional or more monomer is mentioned.

Examples of such monofunctional monomers include styrene monomers such as styrene, vinyl toluene, chlorostyrene, and α-methylstyrene; methyl (meth) acrylate, ethyl (meth) acrylate, acrylonitrile, 2-methoxyethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, phenoxyethyl (meth) acrylate, 2-phenoxy-2-hydroxypropyl (meth) acrylate, 2-hydroxy -3-phenoxypropyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, glycerin mono (meth) acrylate, glycidyl (meth) acrylate, lauryl (meth) acrylate Lilate, cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, tricyclodecanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, dicyclopentanyl (meth) acrylate (2-methyl-2-ethyl-1,3-dioxolan-4-yl) -methyl (meth) acrylate, cyclohexanespiro-2- (1,3-dioxolan-4-yl) -methyl (meth) acrylate, 3-ethyl-3-oxetanylmethyl (meth) acrylate, γ-butyrolactone (meth) acrylate, n-butyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, octyl (meth) acrylate, nonyl (meth) A) Relate, decyl (meth) acrylate, isodecyl (meth) acrylate, dodecyl (meth) acrylate, n-stearyl (meth) acrylate, benzyl (meth) acrylate, phenol ethylene oxide modified (n = 2) (meth) acrylate, nonylphenol propylene Half (meth) acrylates of phthalic acid derivatives such as oxide-modified (n = 2.5) (meth) acrylate, 2- (meth) acryloyloxyethyl acid phosphate, 2- (meth) acryloyloxy-2-hydroxypropyl phthalate; Furfuryl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, carbitol (meth) acrylate, benzyl (meth) acrylate, butoxyethyl (meth) acrylate, allyl (meth) (Meth) acrylate monomers such as acrylate, (meth) acryloylmorpholine, polyoxyethylene secondary alkyl ether acrylate; 2-hydroxyethylacrylamide, N-methylol (meth) acrylamide, N-vinylpyrrolidone, 2-vinylpyridine And vinyl acetate.

Examples of such bifunctional monomers include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, and di Propylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, butylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, ethylene oxide modified bisphenol A type di (meth) acrylate, propylene oxide modified bisphenol A Type di (meth) acrylate, cyclohexanedimethanol di (meth) acrylate, ethoxylated cyclohexanedimethanol di ( Acrylate), dimethylol dicyclopentane di (meth) acrylate, tricyclodecane dimethanol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, glycerin di (meth) acrylate, pentaerythritol di (meth) ) Acrylate, ethylene glycol diglycidyl ether di (meth) acrylate, diethylene glycol diglycidyl ether di (meth) acrylate, diglycidyl phthalate di (meth) acrylate, hydroxypivalic acid modified neopentyl glycol di (meth) acrylate, isocyanuric acid Examples include ethylene oxide-modified diacrylate.

Examples of the tri- or higher functional monomer include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa ( (Meth) acrylate, tri (meth) acryloyloxyethoxytrimethylolpropane, glycerin polyglycidyl ether poly (meth) acrylate, isocyanuric acid ethylene oxide modified triacrylate, caprolactone modified dipentaerythritol penta (meth) acrylate, caprolactone modified dipentaerythritol hexa (Meth) acrylate, caprolactone-modified pentaerythritol tri (meth) acrylate, cap Lactone modified pentaerythritol tetra (meth) acrylate, ethylene oxide modified dipentaerythritol penta (meth) acrylate, ethylene oxide modified dipentaerythritol hexa (meth) acrylate, ethylene oxide modified pentaerythritol tri (meth) acrylate, ethylene oxide modified pentaerythritol Examples include tetra (meth) acrylate and ethoxylated glycerin triacrylate.

Also, a Michael adduct of acrylic acid or 2-acryloyloxyethyl dicarboxylic acid monoester can be used in combination. Examples of such a Michael adduct of acrylic acid include acrylic acid dimer, methacrylic acid dimer, acrylic acid trimer, methacrylic acid trimer, An acrylic acid tetramer, a methacrylic acid tetramer, etc. are mentioned.
The 2-acryloyloxyethyl dicarboxylic acid monoester is a carboxylic acid having a specific substituent, such as 2-acryloyloxyethyl succinic acid monoester, 2-methacryloyloxyethyl succinic acid monoester, 2-acryloyloxyethyl. Examples thereof include phthalic acid monoester, 2-methacryloyloxyethyl phthalic acid monoester, 2-acryloyloxyethyl hexahydrophthalic acid monoester, and 2-methacryloyloxyethyl hexahydrophthalic acid monoester. Furthermore, other oligoester acrylates can also be mentioned.

Among these, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol are excellent in reactivity and versatility. Hexa (meth) acrylate is preferred.

These ethylenically unsaturated monomers (D) may be used alone or in combination of two or more. In addition, the ethylenically unsaturated monomer (D) may be separately added to the active energy ray-curable resin composition of the present invention, or manufactured as a raw material for producing the urethane (meth) acrylate compound (A). Sometimes a part of it may remain in the system.

The content of the ethylenically unsaturated monomer (D) is preferably 0 to 200 parts by weight, more preferably 3 to 100 parts by weight, based on 100 parts by weight of the urethane (meth) acrylate compound (A). Particularly preferred is 5 to 50 parts by weight.
If the content of the ethylenically unsaturated monomer (D) is too large, the resulting cured coating tends to be sticky in the case of a monofunctional monomer, and the cured coating becomes hard in the case of a monomer having two or more functions. Too much, the smooth finger touch tends to be impaired.

[Photopolymerizable initiator (E)]
Examples of the photopolymerization initiator (E) include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 4- (2-hydroxyethoxy) phenyl- (2 -Hydroxy-2-propyl) ketone, 1-hydroxycyclohexyl phenyl ketone, 1- [4- (2-hydroxyethoxy) -phenyl] -2-hydroxy-2-methyl-1-propan-1-one, 2-methyl -2-morpholino (4-thiomethylphenyl) propan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butanone, 2-hydroxy-2-methyl-1- [4- ( 1-methylvinyl) phenyl] acetophenones such as propanone oligomers; benzoin, benzoin methyl ether Benzoins such as benzoin, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether; benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyl-diphenyl sulfide, 3,3 ', 4 , 4'-Tetra (t-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, 4-benzoyl-N, N-dimethyl-N- [2- (1-oxo-2-propenyloxy) ethyl Benzophenones such as benzenemethananium bromide and (4-benzoylbenzyl) trimethylammonium chloride; 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothio Thioxanthones such as Sandton, 1-chloro-4-propoxythioxanthone, 2- (3-dimethylamino-2-hydroxy) -3,4-dimethyl-9H-thioxanthone-9-one mesochloride; 2,4,6- Acyl such as trimethylbenzoyl-diphenylphosphine oxide, bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide Phosphine oxides; and the like. In addition, these photoinitiators can be used individually or can use 2 or more types together.

Further, auxiliary agents for these photopolymerization initiators (E) include triethanolamine, triisopropanolamine, 4,4′-dimethylaminobenzophenone (Michler ketone), 4,4′-diethylaminobenzophenone, 2-dimethylaminoethylbenzoic acid. Ethyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate (n-butoxy), isoamyl 4-dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, 2,4-diethylthioxanthone, 2 , 4-Diisopropylthioxanthone can also be used in combination. These auxiliaries can be used alone or in combination of two or more.

The content of the photopolymerization initiator (E) is the total amount of urethane (meth) acrylate compounds (A) and (B) (when the ethylenically unsaturated monomer (D) is included, (A) and (B) And (D) is preferably 0.1 to 20 parts by weight, particularly preferably 0.5 to 15 parts by weight, particularly preferably 1 to 10 parts by weight per 100 parts by weight. .
If the content of the photopolymerization initiator (E) is too small, curing tends to be poor, and if it is too much, the solution stability tends to decrease, such as precipitation when used as a coating agent, and embrittlement or coloring may occur. Problems tend to occur.

In addition, the active energy ray-curable resin composition of the present invention preferably uses an organic solvent for dilution in order to adjust the viscosity during coating, if necessary. Examples of the organic solvent include alcohols such as methanol, ethanol, propanol, n-butanol and i-butanol; ketones such as acetone, methyl isobutyl ketone, methyl ethyl ketone and cyclohexanone; cellosolves such as ethyl cellosolve; toluene, xylene And the like; glycol ethers such as propylene glycol monomethyl ether; acetates such as methyl acetate, ethyl acetate, and butyl acetate; and diacetone alcohol. These organic solvents may be used alone or in combination of two or more. When two or more types are used in combination, it is preferable from the viewpoint of the coating film appearance that two or more types are selected and combined from glycol ethers, ketones, acetate esters, and alcohols.

The active energy ray-curable resin composition of the present invention can also be diluted to 3 to 60% by weight with the above organic solvent and applied to a substrate.

Thus, the urethane (meth) acrylate compound (A) and organic fine particles (B) of the present invention, preferably a polysiloxane structure-containing urethane (meth) acrylate compound (C), an ethylenically unsaturated monomer (D), light An active energy ray-curable resin composition containing the polymerization initiator (E) is obtained.

In the production of the active energy ray-curable resin composition of the present invention, the method for mixing the urethane (meth) acrylate compound (A) and the organic fine particles (B) and other components as required is particularly limited. Instead, various methods such as a method of mixing each component at once or a method of mixing arbitrary components and then mixing the remaining components at once or sequentially can be adopted.

The active energy ray-curable resin composition of the present invention has an ethylenically unsaturated group concentration of 1.0 to 6.3 mmol / g, preferably 1.5 to 6.0 mmol / g, more preferably 2.0. ~ 5.8 mmol / g.
If the concentration of the ethylenically unsaturated group in the resin composition is too low, the hardness of the cured coating film tends to decrease and the wear resistance tends to decrease. If the concentration is too high, the adhesion between the coating film and the substrate decreases due to curing shrinkage. Or distortion of the resin part other than the particles in the paint tends to increase, and the appearance of the coating film tends to deteriorate.

The active energy ray-curable resin composition of the present invention is effectively used as a curable resin composition for coating film formation, such as a topcoat agent for various substrates. The active energy ray-curable resin composition of the present invention is capable of obtaining a cured coating film having a tactile sensation and a moist sensation and having a smooth touch feeling, and is excellent in wear resistance and antifouling properties. For example, surface coating agents for interior parts such as home appliances and plastic panels in automobiles, woodworking products, decorative films, etc. that have good finger feel and wear resistance and antifouling properties are required It is particularly useful as a coating agent.
Hereinafter, the coating agent containing the active energy ray-curable resin composition of the present invention will be described.

〔Coating agent〕
The coating agent of the present invention can be cured by irradiating with active energy rays after being applied to the substrate (after further drying if a composition diluted with an organic solvent is applied). .

Examples of the base material to which the coating agent of the present invention is applied include polyolefin resin, polyester resin, polycarbonate resin, acrylic resin acrylonitrile butadiene styrene copolymer (ABS), polystyrene resin and the like, and molding them. Metal (aluminum, copper, iron, SUS, zinc, etc.) such as plastic base materials such as products (films, sheets, cups, etc.), composite base materials thereof, or composite base materials of the above materials mixed with glass fibers or inorganic substances Magnesium, alloys thereof, and the like, including metal films such as metal vapor deposition films), and substrates having a primer layer on a substrate such as glass.

Examples of the coating method for the coating agent include wet coating methods such as spraying, showering, dipping, roll, spinning, screen printing, and ink jet printing. Usually, coating is performed on a substrate under normal temperature conditions. be able to.

The coating agent of the present invention is preferably applied by diluting with the above organic solvent so that the solid content concentration is usually 3 to 80% by weight, preferably 5 to 60% by weight.

The drying conditions for dilution with the organic solvent are as follows: the temperature is usually 40 to 120 ° C., preferably 50 to 100 ° C., and the drying time is usually 1 to 20 minutes, preferably 2 to 10 minutes. That's fine.

Active energy rays used when curing the coating agent applied on the substrate include rays such as far ultraviolet rays, ultraviolet rays, near ultraviolet rays, infrared rays, electromagnetic waves such as X-rays and γ rays, electron beams, Proton beams, neutron beams, and the like can be used, but curing by ultraviolet irradiation is advantageous from the viewpoint of curing speed, availability of an irradiation device, price, and the like. In addition, when performing electron beam irradiation, it can harden | cure even if it does not use a photoinitiator.

When curing by ultraviolet irradiation, using a high-pressure mercury lamp, ultra-high pressure mercury lamp, carbon arc lamp, metal halide lamp, xenon lamp, chemical lamp, electrodeless discharge lamp, LED, etc. Usually, ultraviolet rays of 30 to 3000 mJ / cm ² (preferably 100 to 1500 mJ / cm ² ) can be irradiated.
After the ultraviolet irradiation, heating can be performed as necessary to complete the curing.

The coating film thickness (film thickness after curing) is usually 1 to 1000 μm in view of active energy ray transmission so that the photopolymerization initiator can react uniformly as an active energy ray-curable coating film, and preferably Is 2 to 500 μm, particularly preferably 5 to 100 μm.

The coating agent composition preferably contains 2 to 60% by weight of urethane (meth) acrylate compound (A), particularly preferably 3 to 40% by weight, and more preferably 5 to 30% by weight of the entire coating agent composition. % By weight. In addition, the coating agent composition may or may not contain an organic solvent.
When there is too little content of this urethane (meth) acrylate type compound (A), there exists a tendency for a cured coating film to lose a softness | flexibility and to become easy to enter a crack, and when too large, a viscosity will become high too much and coating property will be. There is a tendency to decrease.

Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples unless it exceeds the gist. In the examples, “parts” and “%” mean weight standards.

Prior to Examples and Comparative Examples, the following were produced as urethane (meth) acrylate compounds (A).

<Production Example 1: Urethane (meth) acrylate compound (A-1)>
In a four-necked flask equipped with a thermometer, a stirrer, a water-cooled condenser, and a nitrogen gas inlet, 42.2 g of an isocyanate compound (an isocyanate compound composed of a trimer of “Coronate HX” hexamethylene diisocyanate manufactured by Nippon Polyurethane Industry Co., Ltd.) 48.5 g of polycaprolactone-modified hydroxyl group-containing acrylate compound ("SC1010A" manufactured by MIWON), 0.08 g of hydroquinone methyl ether as a polymerization inhibitor, 0.02 g of dibutyltin laurate as a reaction catalyst, After the temperature was raised to 70 ° C., the reaction was allowed to proceed for 3 hours. Further, 9.3 g of SC1010A was added and held at 70 ° C. for 1 hour. When the residual isocyanate concentration reached 0.3%, the reaction was terminated. 88.6 g of urethane (meth) acrylate compound (A-1) ( Weight average molecular weight (Mw): 3,500), 11.4 g of a polycaprolactone-modified hydroxyl group-containing acrylate compound 11.4 g was obtained. The content of each component in the nonvolatile content of the mixture [I] was 88.6% of the urethane (meth) acrylate compound (A-1) and 11.4% of the polycaprolactone-modified hydroxyl group-containing acrylate compound.
The concentration of ethylenically unsaturated groups in the urethane (meth) acrylate compound (A-1) alone is 2.33 mmol / g, and the ethylenically unsaturated groups in the polycaprolactone-modified hydroxyl group-containing acrylate compound (D-1) only. The concentration is 4.34 mmol / g.

<Production Example 2: Urethane (meth) acrylate compound (A-2)>
In a flask equipped with a thermometer, stirrer, water-cooled condenser, and nitrogen gas inlet, 19.2 g of isophorone diisocyanate and pentaerythritol triacrylate [mixture of pentaerythritol triacrylate and pentaerythritol tetraacrylate (hydroxyl value 120 mgKOH / g)] 80.8 g was charged, 0.08 g of hydroquinone methyl ether as a polymerization inhibitor and 0.01 g of dibutyltin dilaurate as a reaction catalyst were allowed to react at 60 ° C. for 8 hours. When the residual isocyanate group became 0.3% or less After completion of the reaction, 61.5 g of urethane (meth) acrylate compound (A-2) (weight average molecular weight (Mw): 1,500), 6.7 g of pentaerythritol triacrylate, dipentaerythritol tetraacrylate Mixtures of bets 31.8g was obtained [II]. The content of each component in the nonvolatile content of the mixture [II] is 61.5% of urethane (meth) acrylate compound (A-2), 6.7% of pentaerythritol triacrylate (D-2), dipentaerythritol tetra The acrylate (D-3) was 31.8%.
The concentration of ethylenically unsaturated groups in the urethane (meth) acrylate compound (A-2) alone is 7.33 mmol / g, and the concentration of ethylenically unsaturated groups in the pentaerythritol triacrylate (D-2) alone is 10 0.06 mmol / g, and the concentration of ethylenically unsaturated groups in dipentaerythritol tetraacrylate (D-3) alone is 11.35 mmol / g.

<Production Example 3: Urethane (meth) acrylate compound (A-3)>
In a four-necked flask equipped with a thermometer, a stirrer, a water-cooled condenser, and a nitrogen gas inlet, 42.9 g of ethyl acetate, 32.3 g of hydrogenated xylylene diisocyanate, neopentyl glycol (weight average molecular weight (Mw) 104) 11 .6 g, bifunctional polyester polyol (hydroxyl value 63 mg KOH / g, weight average molecular weight (Mw) 5,000) 49.6 g, hydroquinone methyl ether 0.02 g as a polymerization inhibitor, dibutyltin diaurate 0.02 g as a reaction catalyst Was added and reacted at 60 ° C. for 2 hours, charged with 6.50 g of 2-hydroxyethyl acrylate and reacted at 60 ° C. for 3 hours. When the residual isocyanate group reached 0.3%, the reaction was terminated. (Meth) acrylate compound (A-3) (weight average molecular weight (Mw); 14.0 0) to give a mixture of ethyl acetate solution [III] (viscosity (20 ℃) 11,000mPa · s).
The concentration of ethylenically unsaturated groups in the urethane (meth) acrylate compound (A-3) alone is 0.57 mmol / g.

The following were produced as the polysiloxane structure-containing urethane (meth) acrylate compound (C).

<Production Example 4: Polysiloxane structure-containing urethane (meth) acrylate compound (C-1)>
In a four-necked flask equipped with a thermometer, stirrer, water-cooled condenser, and nitrogen gas inlet, hexamethylene diisocyanate trimer (isocyanate group content 23.4%) 52.7 g, hexamethylene diisocyanate 3.5 g, 1.9 g of 1,3-butanediol and 0.1 g of dibutyltin dilaurate were added and reacted at 60 ° C. for 5 hours. When the residual isocyanate group reached 21.3%, the polysiloxane represented by the general formula (2) Compounds (R ¹ = —OC ₃ H ₆ —, R ² = methyl group, R ³ = —C ₃ H ₆ O—, a = average 65, b = 1, c = 1, weight average molecular weight 5,000) When 17.9 g, dibutyltin dilaurate 0.1 g, and butyl acetate 500 g were charged and reacted at 60 ° C. for 3 hours, when the residual isocyanate group became 2.0%, In addition, 424.1 g of dipentaerythritol pentaacrylate [mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (hydroxyl value 50 mg KOH / g)] and 1 g of 2,6-di-tert-butylcresol were added over about 1 hour. The reaction was continued as it was, and the reaction was terminated when the isocyanate group disappeared. Polyurethane structure-containing urethane (meth) acrylate compound (C-1), urethane (meth) acrylate compound (A-4) (Weight average molecular weight (Mw): 19,000), and a mixture [IV] of dipentaerythritol hexaacrylate (D-4) and a butyl acetate solution was obtained (solid content concentration 50%). The content ratio of each component in the non-volatile content of the mixture [IV] is 6% polysiloxane structure-containing urethane (meth) acrylate compound (C-1), 34% urethane (meth) acrylate compound (A-4), It was 60% of pentaerythritol hexaacrylate (D-4).
The ethylenically unsaturated group concentration of only the urethane (meth) acrylate compound (A-4) is 6.91 mmol / g, and the ethylenically unsaturated group concentration of only dipentaerythritol hexaacrylate (D-4) is 10.37 mmol / g.

The following were prepared as organic fine particles (B).
(B-1): Fatty acid polymer fine particles (D50 = 3.2 μm; measured value of laser diffraction particle size distribution according to ISO 13320)

The following were prepared as the photopolymerization initiator (E).
(E-1): 1-hydroxy-cyclohexyl-phenyl-ketone (“IRGACURE 184” manufactured by BASF Japan Ltd.)

<Example 1>
47.8 parts of the mixture [I] containing the urethane (meth) acrylate compound (A-1) obtained above, 27.2 parts of the mixture [II] containing the urethane (meth) acrylate compound (A-2) Then, 25 parts of organic fine particles (B-1), 75 parts of butyl acetate as a diluent solvent and 75 parts of propylene glycol monomethyl ether were mixed, and stirred uniformly using a disper to give a photopolymerization initiator (E-1) 2 An active energy ray-curable resin composition having a solid content of 40% was obtained.

<Example 2 and Comparative Examples 1 and 2>
An active energy ray-curable resin composition was prepared in the same manner as in Example 1 except that the blended components prepared and prepared as described above were blended in the proportions shown in Table 1 below.

<Creation of coating film for evaluation>
The active energy ray-curable resin compositions obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were easily adhered PET (manufactured by Toyobo Co., Ltd .; product) with a bar coater so that the cured coating film had a thickness of 25 μm. After coating on the name “Cosmo Sunshine A4300” (film thickness 125 μm) and drying at 80 ° C. for 4 minutes, using a high pressure mercury lamp lamp 80W and one lamp, a conveyor speed of 3.4 m / min from a height of 18 cm Were subjected to two-pass ultraviolet irradiation (accumulated dose 800 mJ / cm ² ) to obtain a coating film for evaluation.

<Abrasion resistance (RCA value)>
(Evaluation methods)
Using the RCA abrasion tester (Model No. 7-IBB) manufactured by NORMAN TOOL, INC, the cured coating film of the film-forming film obtained above was worn under a contact condition of 2 seconds / time with a load of 175 gf. A test was conducted. The paper tape used for the test was RED SPOT PAINT & VARNISH CO. , INC. SM1680 (topcoat) / SM1585 (basecoat) test material, which averaged 113.25 times when the standard cycle wear test was performed, was used.
Using a surface roughness meter SURFCOM 480A manufactured by Tokyo Seimitsu Co., Ltd., the wear thickness of the coating film in the 200 cycle test, and calculating the wear depth after the wear test by filter type: Gaussian, λs filter: cutoff ratio 300, calculation Standard: Measured under the conditions of JIS B0601-1994, measured the thickness of the worn film from the initial film thickness, and evaluated according to the following criteria. The results are shown in Table 1.
(Evaluation criteria)
○: The film thickness decreased by wear after RCA 200 cycles is 10 μm or less. X: The film thickness decreased by wear after RCA 200 cycles is larger than 10 μm.

<Finger feeling>
(Evaluation methods)
The feeling of touching the surface of the cured coating film with a hand was evaluated according to the following criteria. The results are shown in Table 1.
(Evaluation criteria)
○: Tactile feel that is smooth ×: Rough feel or the coating surface is sticky

From the evaluation results in Table 1, the active energy ray-curable resin composition containing the urethane (meth) acrylate compound (A) and the organic fine particles (B), the active energy ray-curable resin composition. The cured coating film obtained by curing the active energy ray-curable resin composition of Examples 1 and 2 in which the concentration of the ethylenically unsaturated group is in a specific range has a smooth and good finger feeling and wear resistance. It can be seen that an excellent cured coating film can be obtained.
On the other hand, in Comparative Example 1 where the ethylenically unsaturated group concentration of the active energy ray-curable resin composition is less than the specific range, the wear resistance is inferior, and in Comparative Example 2 which is larger than the specific range, A good cured coating film itself could not be obtained.

<Examples 3 and 4 and Comparative Example 3>
An active energy ray-curable resin composition was prepared in the same manner as in Example 1 except that the blended components prepared and prepared as described above were blended in the proportions shown in Table 2 below.

<Creation of coating film for evaluation>
The active energy ray-curable resin compositions obtained in Examples 3 and 4 and Comparative Example 3 were coated with easy-adhesion PET (manufactured by Toyobo Co., Ltd .; trade name “ Cosmo Sunshine A4300 ”(film thickness 125 μm), dried at 80 ° C. for 4 minutes, and then using a high pressure mercury lamp lamp 80W and one lamp at a conveyor speed of 3.4 m / min from a height of 18 cm. Pass UV irradiation (accumulated dose 800 mJ / cm ² ) was performed to obtain a coating film for evaluation.

About the cured coating film of the obtained coating film-forming film, the wear resistance and the touch feeling were evaluated in the same manner as in Examples 1 and 2 and Comparative Examples 1 and 2. Furthermore, the antifouling property was evaluated as follows.

<Anti-fouling property: Magic wiping property>
(Evaluation methods)
The cured coating film of the film-forming film obtained above was drawn with an oil-based magic, sufficiently dried at room temperature (23 ° C.), wiped with a soft cloth, and evaluated according to the following criteria. The results are shown in Table 2.
(Evaluation criteria)
○: The oil-based magic was wiped off by wiping. △: The oil-based magic was not wiped off by wiping, but the cloth soaked in alcohol (methanol) was wiped off. ×: The oil-based magic was not wiped by wiping or alcohol wiping.

From the evaluation results of Table 2 above, the active energy ray-curable resin composition comprising the urethane (meth) acrylate compound (A) and the organic fine particles (B), and the active energy ray-curable resin composition The active energy ray-curable resin composition of Examples 3 and 4 containing a polysiloxane structure-containing urethane (meth) acrylate-based compound (C) having a specific range of ethylenically unsaturated group concentration was cured. It can be seen that the cured coating film obtained has a smooth and good touch feeling, is excellent in wear resistance, and is further excellent in antifouling property.
On the other hand, in Comparative Example 3 where the ethylenically unsaturated group concentration of the active energy ray-curable resin composition is less than a specific range, the polysiloxane structure-containing urethane (meth) acrylate compound (C) is contained. Even so, the antifouling property could not be obtained.

In the above embodiments, specific forms in the present invention have been described. However, the above embodiments are merely examples and are not construed as limiting. Various modifications apparent to those skilled in the art are contemplated to be within the scope of this invention.

The active energy ray-curable resin composition of the present invention has an effect that there is no tackiness or moist feeling, a cured coating film having a smooth touch feeling is obtained, and excellent wear resistance. It is useful as various film forming materials. Particularly, it is suitable as a coating agent for a coating material composition for coating a plastic substrate, a coating agent composition for in-mold molding, and the like.

Claims (9)

1. Active energy ray-curable resin containing urethane (meth) acrylate compound (A) and organic fine particles (B) obtained by reacting isocyanate compound (a1) and hydroxyl group-containing (meth) acrylate compound (a2) An active energy ray-curable resin composition comprising a composition having an ethylenically unsaturated group concentration of 1.0 to 6.3 mmol / g.
2. The active energy ray-curable resin composition according to claim 1, further comprising a polysiloxane structure-containing urethane (meth) acrylate-based compound (C).
3. It further contains an ethylenically unsaturated monomer (D) (excluding the urethane (meth) acrylate compound (A) and the polysiloxane structure-containing urethane (meth) acrylate compound (C)). Item 3. The active energy ray-curable resin composition according to Item 1 or 2.
4. The active energy ray-curable resin composition according to any one of Claims 1 to 3, wherein the urethane (meth) acrylate compound (A) has a weight average molecular weight of 1,000 to 50,000. object.
5. The content (solid content) of the organic fine particles (B) is 5 to 100 parts by weight with respect to 100 parts by weight of the urethane (meth) acrylate compound (A). The active energy ray-curable resin composition according to one item.
6. The content of the polysiloxane structure-containing urethane (meth) acrylate compound (C) is 0.001 to 1 part by weight with respect to 100 parts by weight of the urethane (meth) acrylate compound (A). Item 6. The active energy ray-curable resin composition according to any one of Items 2 to 5.
7. A coating agent composition comprising the active energy ray-curable resin composition according to any one of claims 1 to 6.
8. The coating agent composition according to claim 7, wherein the content of the urethane (meth) acrylate compound (A) is 2 to 60% by weight.
9. A laminate comprising a substrate and a coating layer comprising the coating agent composition according to claim 7 or 8.