JP2001226413A - Radiation cure-type antistatic resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radiation cure-type resin composition excellent in antistatic property and transparency and having high hardness. SOLUTION: A radiation cure-type antistatic resin composition features comprising (A) a polyfunctional urethaneacrylate obtained by reacting a radiation cure-type polyfunctional (meth)acrylate having two or more (meth)acryloyl groups and active hydrogens in a molecule with a polyisocyanate, (B) a zinc antimonate sol having a particle diameter measured by a BET(Brunauer-Emmett- Teller) method of <=18 nm and an average particle diameter measured by a dynamical scattering method of <=100 nm and (C) a polymer having a copolymerizable unsaturated double bond as an end group.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a radiation-curable resin composition having antistatic properties. More specifically, it improves the surface hardness of plastics such as polyester, acrylic, polycarbonate, triacetylcellulose, and polyethersulfone, has good adhesion to a substrate even in thick film coating, and has good transparency. The present invention relates to a radiation-curable antistatic resin composition.

[0002]

2. Description of the Related Art At present, plastics are widely used in various industries including the automobile industry, the home appliance industry, the electric and electronic industry, and the like. The reason why plastics are used in large quantities is because of their light weight, low cost, optical characteristics, and the like, in addition to their workability and transparency. However, it has drawbacks such as being softer than glass or the like and easily scratching the surface. In order to remedy these drawbacks, it is common practice to coat a surface with a hard coat agent. As the hard coat agent, a thermosetting hard coat agent such as a silicone paint, an acrylic paint, and a melamine paint is used. Among them, silicon-based hard coat agents have been used frequently because of their high hardness and excellent quality. Most high-value-added products such as glasses and lenses use this type of coating agent. However, the curing time is long, expensive and not suitable for a hard coat of a film to be processed continuously. Attempts have also been made to add a filler for preventing reflection to the silicon hard coat agent, but since the resin is a heat-curable resin, the filler agglomerates at the time of heating and a low reflectivity core within a range that does not impair transparency. At present, no product is available.

[0003] In recent years, radiation-curable acrylic hard coat agents have been developed and used. Radiation-curable hard coat agents are hardened immediately by irradiating radiation such as ultraviolet rays to form a hard film.
Since it has a high processing speed, has excellent performance such as hardness and abrasion resistance, and is inexpensive in terms of total cost, it is now the mainstream in the field of hard coating. It is particularly suitable for continuous processing of films such as polyester. As plastic films, polyester films, acrylic films, polycarbonate films, vinyl chloride films, triacetyl cellulose films,
Polyether sulfone films and the like are available, but polyester films are one of the most widely used films because of their excellent characteristics. The polyester film is laminated on a glass shatterproof film or a light-shielding film for automobiles, or as an electronic material, on a steel plate of a housing of a home electric appliance such as a touch panel, a liquid crystal display, a CRT flat TV or a refrigerator to improve cosmetic properties. It is widely used as a film on the surface of a whiteboard. In any of these applications, a hard coat is required to prevent the surface from being damaged.

Further, in recent years, in the case of a display such as a CRT or an LCD having a film coated with a hard coat agent on the surface, the film surface becomes smooth, so that the display screen becomes difficult to see due to reflection and the eyes are easily tired. Because of the above-mentioned problem, a hard coat treatment having a surface antireflection ability is required depending on the application. As a method for preventing surface reflection, a method in which an inorganic filler or an organic fine particle filler is dispersed in a radiation-curable resin is coated on a film, and the surface is made uneven to prevent reflection (AG treatment); There is a method of providing a multilayer structure on a film in the order of a high refractive index layer and a low refractive index layer, reflecting the difference in refractive index and preventing reflection (AR treatment), or a method combining the above two methods.

[0005]

In the field of electronic materials, in particular, in the field of electronic materials, there is a demand for a material which is hardly contaminated with foreign substances such as dust and dirt, and the generated static electricity is eliminated. For the purpose, there is a method of adding an antistatic agent. As antistatic agents, cationic, anionic and nonionic surfactants are known, but the antistatic performance varies greatly depending on the environment,
A low molecular weight material having a large effect has a problem that it bleeds, and a large amount of a high molecular weight material causes a decrease in hardness of the film. In addition, conductive polymers and the like are also known, but have a problem that they are colored when mixed with a radiation-curable resin because they are conjugated in structure. Under these circumstances, the method of using conductive fine particles of metal oxides is becoming the mainstream, and when using these fine particles, it is necessary to provide antistatic performance while maintaining the transparency of the coating film to some extent. Becomes possible. However, there is always a demand for improved performance of coating films. Under such circumstances, in order to improve the hardness of the coating film and the antistatic performance, it is necessary to add a large amount of metal fine particles or to apply a thick film. There were problems such as an increase in curl due to shrinkage, a decrease in adhesion, generation of cracks, and an increase in haze. The present invention improves the above-mentioned drawbacks, has no environmental dependence on antistatic performance, has high transparency even in thick film coating, has good adhesion to a substrate, and has a high hardness radiation-curable resin. It is intended to provide a composition.

[0006]

The present inventors have conducted intensive studies to solve the above problems, and as a result, have found that a radiation-curable resin composition having a specific composition can solve the above-mentioned problems. The present invention has been completed. That is, the present invention
(1) Radiation-curable polyfunctional (meth) having at least two (meth) acryloyl groups and active hydrogen in the molecule
A polyfunctional urethane acrylate (A) obtained by reacting acrylate and polyisocyanate, a zinc antimonate having a particle diameter of 18 nm or less by a BET method and an average particle diameter of 100 nm or less by a dynamic scattering method. A radiation-curable antistatic resin composition comprising a sol (B) and a polymer (C) having a terminal copolymerizable unsaturated double bond, (2) radiation-curable antistatic resin (1) The resin composition according to (1), which contains a photopolymerization initiator (D) in the resin composition, and (3) the radiation curable antistatic resin composition contains a solvent having a boiling point of 100 ° C. or more ( (4) the resin composition according to (1) or (2),
The solvent according to (3) is propylene glycol monomethyl ether acetate, wherein the resin composition according to any one of (1) to (3), (5) the content of the polyfunctional urethane acrylate (A) is: When the total solid content of the composition is 100 parts by weight, the resin composition according to any one of (1) to (4), which is in the range of 10 to 50 parts by weight, (6) zinc antimonate ( The content of B) is 40 to 80 when the total solid content of the composition is 100 parts by weight.
The resin composition according to any one of (1) to (5), wherein the content of the polymer (C) having a copolymerizable unsaturated double bond at the terminal is in the range of parts by weight. The resin composition according to any one of (1) to (6), wherein the total solid content of the composition is 100 parts by weight; The content of the agent (D) is
0.5 to 100 parts by weight of the total solid content of the composition
A film having the resin composition according to any one of (1) to (7) and the resin composition according to any one of (9) (1) to (8) in a range of 10 parts by weight. Or sheet, regarding.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The radiation-curable polyfunctional (meth) acrylate having at least two (meth) acryloyl groups and active hydrogen in the molecule used in the present invention is pentaerythritol tri (meth) acrylate. Acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol di (meth) acrylate,
Trimethylolpropane di (meth) acrylate, epoxy acrylate and the like can be mentioned. Preferred specific examples include pentaerythritol triacrylate and dipentaerythritol pentaacrylate. These polyfunctional (meth) acrylates may be used alone or in combination of two or more.

[0008] As the polyisocyanate, a polyisocyanate composed of a chain saturated hydrocarbon, a cyclic saturated hydrocarbon, or an aromatic hydrocarbon can be used. Such polyisocyanates include, for example, chain saturated hydrocarbon isocyanates such as tetramethylene diisocyanate, hexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, methylene bis (4-cyclohexyl) Isocyanate), hydrogenated diphenylmethane diisocyanate,
Cyclic saturated hydrocarbon isocyanates such as hydrogenated xylene diisocyanate and hydrogenated toluene diisocyanate;
-Tolylene diisocyanate, 1,3-xylylene diisocyanate, p-phenylene diisocyanate, 3,
3′-dimethyl-4,4′-diisocyanate, 6-isopropyl-1,3-phenyldiisocyanate,
Aromatic polyisocyanates such as 5-naphthalenediisocyanate can be mentioned. Preferred specific examples include isophorone diisocyanate, tetramethylene diisocyanate, and hexamethylene diisocyanate. These polyisocyanates may be used alone or in combination of two or more.

The polyfunctional urethane acrylate (A) can be obtained by reacting the above-mentioned radiation-curable polyfunctional (meth) acrylate having active hydrogen with a polyisocyanate. With respect to 1 equivalent of active hydrogen groups in the radiation-curable polyfunctional (meth) acrylate having active hydrogen, the polyisocyanate is usually 0.1 equivalent as isocyanate group equivalent.
It is in the range of 1 to 50, preferably in the range of 0.1 to 10. The reaction temperature is usually in the range of 30 to 150 ° C, preferably 50 to 100 ° C. The end point of the reaction is confirmed by the decrease in the amount of isocyanate.

A catalyst may be added for the purpose of shortening the reaction time. As this catalyst, either a basic catalyst or an acidic catalyst is used. Examples of the basic catalyst include pyridine, pyrrole, triethylamine, diethylamine, dibutylamine, amines such as ammonia,
Phosphines such as tributylphosphine and triphenylphosphine can be exemplified. Examples of the acidic catalyst include copper naphthenate, cobalt naphthenate,
Metal alkoxides such as zinc naphthenate, tributoxy aluminum, trititanium tetrabutoxide, zirconium tetrabutoxide, Lewis acids such as aluminum chloride, 2-ethylhexane tin, octyl tin trilaurate, dibutyl tin dilaurate, octyl tin diacetate, etc. Tin compounds can be mentioned. Among these catalysts, an acidic catalyst is preferable, and a tin compound is more preferable. The amount of these catalysts added is usually 0.1 parts by weight based on 100 parts by weight of polyisocyanate.
１1 part by weight.

Component (A) is used in an amount of usually 10 to 50 parts by weight, preferably 20 to 40 parts by weight, based on 100 parts by weight of the total solid content of the composition.

The zinc antimonate sol (B) having a particle diameter of 18 nm or less by the BET method and an average particle diameter of 100 nm or less by the dynamic scattering method used in the present invention is an organic solvent such as methanol. Organosols dispersed in solvents are preferred. For example, JP-A-6-21
9743, and an organosol of methanol (Cernax CX-Z650M-3F, Cernax CX-Z600M3F2, both manufactured by Nissan Chemical Industries, Ltd.).
(Manufactured by K.K.). The sol of zinc antimonate has a particle size of 18 nm or less by a BET method and an average particle size of 100 nm or less by a dynamic scattering method. The volume resistance value of this zinc antimonate is, for example, 1 × 10E2 to 1 × 10E3. still,
The particle diameter by the BET method is a particle diameter calculated by a gas phase adsorption method in a powder state of zinc antimonate. Further, the average particle diameter by the dynamic scattering method is an average particle diameter measured by a Coulter N4 apparatus in a state of a zinc antimonate sol.

Component (B) is used in an amount of usually 40 to 80 parts by weight, preferably 50 to 75 parts by weight, based on 100 parts by weight of the total solid content of the composition.

The above-mentioned sol is unstable to solvents such as ultraviolet-curing resin, thermosetting resin, toluene, methyl ethyl ketone, and ethyl acetate, and agglomerates to increase the particle diameter, breaks dispersion, and separates and precipitates. Will cause. In order to stably disperse these resins and solvents, a special dispersant is required. As this dispersant, a cationic, weak cationic, nonionic or amphoteric surfactant is effective, and more preferably a surfactant having an alkylamine, particularly Solsperse 20000 (manufactured by Zeneca Corporation, alkylamine PO, EO modification) or TA
MNO-15 (manufactured by Nikko Chemical Co., Ltd., EO-modified alkylamine) is effective. The amount added is generally in the range of 0.5 to 30 parts by weight, preferably 1 to 20 parts by weight, based on the fine particles used. Outside this range,
In some cases, dispersion stability may not be obtained, or the haze of the coating may increase, resulting in loss of transparency. In addition, as the alkyl group of the alkylamine, for example, a methyl group,
Examples thereof include an ethyl group, a lauryl group, and a stearyl group. Further, the number of moles of EO (ethylenoxide) and PO (propylene oxide) may be usually from several moles to about 100 moles per mole of the amine, but is not limited thereto.

The polymer (C) having an unsaturated double bond copolymerizable at the terminal used in the present invention includes methacrylate polymethyl methacrylate, styryl polymethacrylate, methacrylate polystyrene, methacrylate polyethylene glycol, and methacrylate polyethylene glycol. Methacrylate acrylonitrile-styrene copolymer,
Terminal methacrylate styrene-methyl methacrylate copolymer, and the like, and its weight average molecular weight is 5
000 to 10,000 are preferred. The amount of the component (C) used is defined assuming that the total solid content of the composition is 100 parts by weight.
It is usually in the range of 1 to 10 parts by weight, preferably 1 to 5 parts by weight.
Parts by weight.

Commercially available polymers (C) having a copolymerizable unsaturated double bond at the terminal include macromonomers AA
-6S, AS-6S, AN-6S, AW-6S (manufactured by Toagosei Co., Ltd.) and the like.

The photopolymerization initiator (D) is usually added when the radiation for curing is ultraviolet light. The component (D) is not particularly limited, and may be, for example, Irgacure 18
4,907,651,1700,1800,819,3
69 (Ciba Specialty Chemicals), Darocur 1173 (Merck), Ezacure KIP
150, TZT (manufactured by Nippon Siebel-Hegner), Lucirin TPO (manufactured by BASF), Kayacure BMS (manufactured by Nippon Kayaku), and the like.

When these photopolymerization initiators (D) are used, when the total solid content of the composition is 100 parts by weight,
It is usually in the range of 0.5 to 10 parts by weight, preferably 1 to 10 parts by weight.
It is 5 parts by weight, more preferably 1 to 3 parts by weight.
The component (D) may be used alone or in combination of two or more. In addition, those having a small molecular weight, a low melting point and a low boiling point may be gasified by heat and may adversely affect a subsequent process.

The above photopolymerization initiator (D) can be used in combination with a curing accelerator. Examples of the curing accelerator that can be used in combination include amines such as triethanolamine, diethanolamine, N-methyldiethanolamine and EPA, and hydrogen donors such as 2-mercaptobenzothiazole. The use amount of these curing accelerators is 0 to 5 parts by weight based on the total solid content of the composition.

The radiation-curable resin composition used in the present invention may contain a radiation-curable acrylate and a solvent, if necessary, in addition to the components (A), (B) and (C).

Examples of radiation-curable acrylates include neopentyl glycol diacrylate, 1,6 hexanediol diacrylate, trimethylolpropane triacrylate, ditrimethylolpropane tetraacrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, dipentaerythritol Hexaacrylate, bisphenol A
Diglycidyl ether diacrylate, neopentyl glycol diglycidyl ether diacrylate,
Epoxy acrylates such as diacrylate of 1,6 hexanediol diglycidyl ether; polyester acrylates obtained by esterifying polyhydric alcohol with polycarboxylic acid and / or anhydride thereof and acrylic acid; polyhydric alcohol; Examples include urethane acrylate, polysiloxane polyacrylate, tetrahydrofurfuryl acrylate, dicyclopentenyl acrylate, dicyclopentenyloxyethyl acrylate, and tricyclodecanyl acrylate obtained by reacting a divalent isocyanate and a hydroxyl group-containing acrylate. The amount of these used is usually in the range of 0 to 50 parts by weight, preferably 0 to 30 parts by weight, based on the total solid content of the composition.

As the solvent to be used, a solvent having a boiling point of 100 ° C. or higher is preferable. For example, toluene (111 ° C.)
Butyl acetate (126 ° C), ethyl lactate (154 ° C), P
GMEA (propylene glycol monomethyl ether acetate, 146 ° C.) and the like. Especially PGMEA
Is preferred. These amounts are usually in the range of 20 to 70 parts by weight based on the total amount of the composition, preferably
20 to 60 parts by weight. If a low-boiling solvent is used or if the amount of the high-boiling solvent added is small, the film may be whitened at the time of coating, and the transparency, haze and appearance may be reduced.

Further, in addition to the above components, a leveling agent, an antifoaming agent, and a slipping agent can be added as required.

Further, it is also possible to add an ultraviolet absorber, a light stabilizer, various kinds of inorganic and organic fillers, a polymer and the like to impart functionality.

The radiation-curable resin composition used in the present invention comprises the components (A), (B), (C) and (D) described above.
It can be obtained by mixing the components, solvent and other components in any order. The resin composition used in the present invention is stable over time.

The film of the present invention is prepared by coating the above radiation-curable resin composition on a film substrate and drying the resin composition in a weight of usually 0.1 to 50 g / m ² , preferably 0.5 to 50 g / m ² .
The composition can be obtained by applying the composition so as to have a thickness of 20 g / m ² (generally 0.1 to 50 μm, preferably 0.5 to 20 μm), drying and irradiating radiation to form a cured film. Examples of the film substrate include polyester, polyacrylate, polycarbonate, triacetylcellulose, and polyethersulfone. The film may be in the form of a sheet.

Examples of the method of applying the radiation-curable resin composition include bar coater coating, Meyer bar coating, air knife coating, gravure coating, reverse gravure coating, die coater coating, offset printing, and flexographic printing. Printing, screen printing, and the like. At this time, the film to be used may be provided with a pattern or an easy-adhesion layer.

The radiation to be irradiated includes, for example, ultraviolet rays and electron beams. In the case of curing with ultraviolet rays, an ultraviolet irradiation device having a xenon lamp, a high-pressure mercury lamp, and a metal halide lamp is used as a light source, and the amount of light and the arrangement of the light source are adjusted as necessary. It is preferable to cure at a transport speed of 5 to 60 m / min with respect to one lamp having a light amount of up to 120 W / cm. On the other hand, when curing with an electron beam, it is preferable to use an electron beam accelerator having an energy of usually 100 to 500 eV.

[0029]

Next, the present invention will be described more specifically with reference to preparation examples and examples, but the present invention is not limited to these examples. In addition, in a preparation example, a part means a weight part.

Synthesis Example 939.7 parts of dipentaerythritol pentaacrylate and di-n-butyltin dilaurate in a dry container.
47 parts and 0.3 part of methoquinone were added and heated and stirred to 80 ° C. Hexamethylene diisocyanate 60.
Three parts were added dropwise over 1 hour, and the isocyanate value after stirring for 1 to 2 hours was 0.1 or less, indicating that the reaction was almost quantitatively completed.

Formulation Example 1 The polyfunctional urethane acrylate obtained in the synthesis example was used for 15.
67 parts, 1.26 parts of Irgacure 184 (manufactured by Ciba Specialty Chemicals), CELNAX CX-
Z600M-3F2 (solid content 60%, Nissan Chemical Industries, Ltd.)
50 parts of Zinc antimonate methanol sol), 1.5 parts of Solsperse 20000 (Zeneca dispersant),
1.5 parts of tetrahydrofurfuryl acrylate, 3-
30 parts of methyl-3-methoxybutyl acetate (manufactured by Kuraray Co., Ltd., Solfit AC), and a leveling agent (manufactured by Toray Dow Corning Silicone, ST103PA) 0.0
Seven parts were mixed to obtain a radiation-curable resin composition used in the present invention.

Formulation Example 2 The polyfunctional urethane acrylate obtained in the synthesis example was used for 15.
67 parts, 1.26 parts of Irgacure 184 (manufactured by Ciba Specialty Chemicals), CELNAX CX-
Z600M-3F2 (solid content 60%, Nissan Chemical Industries, Ltd.)
50 parts of Zinc antimonate methanol sol), 1.5 parts of Solsperse 20000 (Zeneca dispersant),
Macromonomer AN-6S (manufactured by Toagosei Co., Ltd.)
Part, 3-methyl-3-methoxybutyl acetate (Co., Ltd.)
30 parts of Kuraray, Solfit AC), leveling agent (Toray Dow Corning Silicone, ST103PA)
0.07 parts were mixed to obtain a radiation-curable resin composition used in the present invention.

Formulation Example 3 The polyfunctional urethane acrylate obtained in Synthesis Example
67 parts, 1.26 parts of Irgacure 184 (manufactured by Ciba Specialty Chemicals), CELNAX CX-
Z600M-3F2 (solid content 60%, Nissan Chemical Industries, Ltd.)
50 parts of Zinc antimonate methanol sol), 1.5 parts of Solsperse 20000 (Zeneca dispersant),
Macromonomer AN-6S (manufactured by Toagosei Co., Ltd.)
Parts, 30 parts of propylene glycol monomethyl ether acetate (manufactured by Kuraray Co., Ltd., PGM-AC), and a leveling agent (manufactured by Toray Dow Corning Silicone, ST103P)
A) 0.07 parts were mixed to obtain a radiation-curable resin composition used in the present invention.

Comparative Example 1 15.67 pentaerythritol tetraacrylate
Part, Irgacure 184 (manufactured by Ciba Specialty Chemicals), 1.26 parts, Cellnax CX-Z6
50 parts of 00M-3F2 (solid content 60%, methanol sol of zinc antimonate manufactured by Nissan Chemical Industry Co., Ltd.), 1.5 parts of Solsperse 20000 (dispersing agent manufactured by Zeneca), 3-
30 parts of methyl-3-methoxybutyl acetate (manufactured by Kuraray Co., Ltd., Solfit AC) and a leveling agent (manufactured by Toray Dow Corning Silicone, ST103PA)
07 parts were mixed to obtain a radiation-curable resin composition for comparative test.

Comparative Example 2 The polyfunctional urethane acrylate obtained in the synthesis example was used for 15.
67 parts, 1.26 parts of Irgacure 184 (manufactured by Ciba Specialty Chemicals), CELNAX CX-
Z600M-3F2 (solid content 60%, Nissan Chemical Industries, Ltd.)
50 parts of Zinc antimonate methanol sol), 3 parts of Solsperse 20000 (Zeneca dispersant), 3-
30 parts of methyl-3-methoxybutyl acetate (manufactured by Kuraray Co., Ltd., Solfit AC), and a leveling agent (manufactured by Toray Dow Corning Silicone, ST103PA) 0.0
7 parts were mixed to obtain a radiation-curable resin composition for a comparative test.

Example (1) Method of preparing coating film The radiation-curable resin compositions obtained in the above Formulation Examples and Comparative Examples were commercially available using a bar coater (No. 20) to obtain a commercially available polyester film (thickness). 188 μm)
After leaving it in a drying oven at 80 ° C. for 1 minute,
UV light is irradiated at a conveyor speed of 5 m / min from a distance of 10 cm from a high-pressure mercury lamp of 0 W / cm, and a cured film (about 1
0 μm).

(2) Measurement of Pencil Hardness According to JIS K 5400, the pencil hardness of the coated film was measured using a pencil scratch tester.

(3) Scratch resistance test A steel wool # 0000 was reciprocated 10 times under a load of 200 g / cm ² , and the condition of the scratch was visually determined. Evaluation ○: No scratch ×: Scratched

(4) Adhesion According to JIS K 5400, 1 mm
Make 100 grids by making 11 vertical and horizontal cuts at intervals. After a commercially available cellophane tape was adhered to the surface, the number of squares remaining without being peeled off at a stretch was indicated.

(5) Measurement of total light transmittance (Tt) and haze value Measured using a haze meter Tokyo Denshoku TC-H3DPK.

(6) Measurement of Surface Resistivity A resistivity meter was measured using HIRESTA IP manufactured by Mitsubishi Chemical Corporation. The evaluation results are shown in Table 1.

Table 1 Pencil Hardness Scratch Adhesion Tt Haze Surface Resistivity (%) (%) (Ω / □) Formulation Example 1 2H １００ 100 70 1.3 1.5 × 10E9 Formulation Example 2 2H １００ 100 71 1 0.4 9.8 × 10E8 Formulation Example 3 2H ○ 100 71 1.3 1.0 × 10E8 Comparative Example 1 2H ○ 100 72 1.5 1.6 × 10E13 Comparative Example 2 2H ○ 50 71 1.5 1.9 × 10E9

As is clear from Table 1, by using the radiation-curable resin composition of the present invention, a hard coat film having excellent antistatic properties, hardness, adhesion and high transparency was obtained.

[0044]

The radiation-curable resin composition of the present invention has excellent antistatic properties, high transparency, good adhesion, and good hardness, especially plastic optical components, touch panels, flat displays, and films. It is a hard coat film suitable for fields that dislike dust and require hardness, such as liquid crystal elements.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08K 3/24 C08K 3/24 7/18 7/18 F term (Reference) 4F071 AA22 AA33 AA47 AA53 AB20 AC02 AC10 AD02 AE02A AE03A AE16 AE19 AF25 AF30 AF38 AF58 AG14 AG15 AH16 BA02 BA08 BB02 BB12 BC01 BC02 4J002 BC032 BC062 BC072 BG042 BG052 CK021 DE166 EA037 EH027 EH157 ET008 FA086 FD010 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 FD040 PA69 PA95 PB06 PB15 PB26 PC02 PC08 QB03 QB24 QC01 UA01 UA03 VA01 WA02 4J027 AA02 AA08 AC03 AC06 AG23 AG24 AG27 AG36 BA07 BA19 BA24 CA14 CA22 CA24 CA33 CB10 CC03 CD08

Claims (9)

[Claims] 1. A polyfunctional urethane acrylate (A) obtained by reacting a radiation-curable polyfunctional (meth) acrylate having at least two or more (meth) acryloyl groups and active hydrogen in a molecule with a polyisocyanate, A sol (B) of zinc antimonate having a particle size of 18 nm or less by a BET method and an average particle size of 100 nm or less by a dynamic scattering method, and a weight having a copolymerizable unsaturated double bond at a terminal. A radiation-curable antistatic resin composition containing a coalescence (C). 2. The resin composition according to claim 1, wherein the radiation-curable antistatic resin composition contains a photopolymerization initiator (D). 3. The resin composition according to claim 1, wherein the radiation-curable antistatic resin composition contains a solvent having a boiling point of 100 ° C. or higher. 4. The resin composition according to claim 1, wherein the solvent according to claim 3 is propylene glycol monomethyl ether acetate. 5. The composition according to claim 1, wherein the content of the polyfunctional urethane acrylate (A) is in the range of 10 to 50 parts by weight, when the total solid content of the composition is 100 parts by weight. Item 14. The resin composition according to Item. 6. The content of the sol (B) of zinc antimonate when the total solid content of the composition is 100 parts by weight.
The resin composition according to any one of claims 1 to 5, which is in a range of 40 to 80 parts by weight. 7. The content of the polymer (C) having a copolymerizable unsaturated double bond at the terminal is 1% of the total solid content of the composition.
The resin composition according to any one of claims 1 to 6, wherein the amount is in the range of 1 to 10 parts by weight when the amount is 00 parts by weight. 8. The composition according to claim 1, wherein the content of the photopolymerization initiator (D) is in the range of 0.5 to 10 parts by weight based on 100 parts by weight of the total solid content of the composition. Item 2. The resin composition according to item 1. 9. A film or sheet comprising the resin composition according to claim 1.