JP2008094929A - Ultraviolet-curable antistatic hard coat resin composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultraviolet-curable resin composition that is excellent in antistaticity and transparency and has a high hardness. <P>SOLUTION: The ultraviolet-curable antistatic hard coat resin composition comprises an ultraviolet-curable polyfunctional (meth)acrylate (A) bearing at least two (meth)acryloyl groups in the molecule and a phosphor-doped tin oxide (B), where the doping amount of phosphor in the phosphor-doped tin oxide (B) is 0.4-0.5 wt.%. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an ultraviolet curable hard coat resin composition that imparts scratch resistance and antistatic properties to a plastic surface. More specifically, UV curable antistatic hard coat resin composition that is transparent and excellent in scratch resistance, chemical resistance and antistatic property, suitable for coating on plastic surfaces such as polyester, acrylic, triacetylcellulose, polycarbonate, etc. Related to things.

  At present, plastics are used in large quantities in various industries including the automobile industry, the home appliance industry, and the electrical and electronic industry. The reason why such a large amount of plastic is used is that, in addition to its processability and transparency, it is lightweight, inexpensive and has excellent optical properties. However, it has disadvantages such as being softer than glass and being easily scratched on the surface. In order to improve these drawbacks, it is a common means to coat the surface with a hard coating agent. As the hard coat agent, thermosetting hard coat agents such as silicone paints, acrylic paints, and melamine paints are used. Of these, silicone hard coat agents are particularly frequently used because of their high hardness and excellent quality. However, it has a long curing time, is expensive, and cannot be said to be suitable for a hard coat layer provided on a continuously processed film.

  In recent years, photosensitive acrylic hard coating agents have been developed and used (see Patent Document 1). The photosensitive hard coat agent is cured immediately upon irradiation with radiation such as ultraviolet rays to form a hard film, so the processing speed is fast, and it has excellent performance in terms of hardness and scratch resistance. Now it has become the mainstream in the hard coat field because it is cheaper. It is particularly suitable for continuous processing of films such as polyester. Examples of the plastic film include a polyester film, an acrylic film, a polycarbonate film, a vinyl chloride film, a triacetyl cellulose film, and a polyethersulfone film. The polyester film is most widely used because of various excellent characteristics. This polyester film is a glass anti-scattering film, an automobile light-shielding film, a whiteboard surface film, a system kitchen surface antifouling film, and electronic materials such as CRT flat TVs, touch panels, liquid crystal displays, plasma displays, etc. Widely used as a functional film. All of these are coated with a hard coat so as not to scratch the surface.

  In addition to plastic films, polycarbonate and acrylic sheets and substrates that are hard-coated are also used for liquid crystal related members around optical disks and backlights.

  Further, in recent years, a substrate coated with a hard coat agent has been required to have a function other than the performance as a hard coat called scratch resistance. For example, in a display such as a CRT, LCD, or PDP provided with a film, the display screen is difficult to see due to reflection, and the eyes are likely to get tired. Processing is required. As a method for preventing surface reflection, a film in which inorganic filler or organic filler is dispersed in a photosensitive resin is coated on the film, and the surface is made uneven to prevent reflection (AG treatment). High refraction on the film A method of preventing reflection by providing a multilayer structure in the order of a refractive index layer and a low refractive index layer and using light interference due to a difference in refractive index (AR processing), or AG / AR processing combining the above two methods (See Patent Document 2).

  In addition, a hard coat having an antistatic function has been developed, and there is a method of using a surfactant or a conductive metal oxide (see Patent Document 3).

  Among the demands for hard coats with added functionality, there is a demand for materials that are less susceptible to foreign matter such as dust and dirt, particularly in the field of electrical and electronic materials. There is a method of adding an antistatic agent for the purpose of removing generated static electricity. Antistatic agents include cation, anion, and nonionic surfactants, but they are highly environment-dependent and vary in antistatic properties. When a large amount of molecular weight is added, there is a problem that the hard coat performance is lowered. In addition, conductive polymers are also known, but there are problems in that, when mixed with an ultraviolet curable resin, the performance deteriorates or the coloring increases.

  Among these problems, a method using metal oxide conductive fine particles is becoming mainstream in imparting antistatic performance to hard coats. When these metal oxides are used, it is possible to impart permanent antistatic properties while maintaining the properties of the hard coat. Further, by reducing the metal oxide, a film with less haze can be obtained. However, many metal oxides having conductivity are colored, and when a large amount of metal oxide is added to maintain conductivity, the coating film is colored and there is no cloudiness but the transmittance is lowered. There is also a drawback. For metal oxides that are nearly transparent, there is also a problem that antistatic performance cannot be obtained sufficiently.

  In recent years, metal oxide fine particles having conductivity have been used. Examples thereof include tin oxide doped with antimony (ATO), zinc antimonate, and tin-doped indium oxide (ITO). ITO is good from the viewpoint of transparency and conductivity, but recently, due to destabilization of the supply of the indium raw material, there is a demand for a conductive material that can be changed to ITO that is expensive and uneasy to supply. In addition, antimony compounds tend to be used from the safety aspect such as toxicity of antimony, and a conductive material not using antimony has been demanded.

  As the metal oxide fine particles having conductivity without using antimony, a method of doping tin oxide with a metal such as phosphorus, germanium, lithium, or zinc, or a method of doping aluminum oxide, gallium, or the like with zinc oxide has been proposed. Among them, for tin oxide doped with phosphorus, a manufacturing method (Patent Document 4) in which phosphorus is solid-solved in a tin oxide crystal to impart conductivity, or tin oxide doped with phosphorus is used. There is a method of imparting conductivity to a plastic member (Patent Document 5).

  However, although such phosphorus-doped tin oxide is known as a conductive material, there are few documents that have studied the amount of phosphorus doped in detail, and high performance can be maintained in both transparency and conductivity. The fact is that there is no such material.

Japanese Patent Laid-Open No. 9-48934 JP-A-9-145903 JP-A-10-231444 Japanese Patent No. 3365821 Japanese Patent No. 2818053

  The present invention improves the above-mentioned drawbacks, and by using tin oxide having a specific phosphorus doping amount, the UV curable type has high transparency, high anti-static performance, no dependence on the environment, and high hardness. An object is to provide an antistatic hard coat resin composition.

  As a result of intensive studies to solve the above problems, the present inventors have found that a photosensitive resin composition having a specific compound and composition can solve the above problems, and have reached the present invention.

That is, the present invention
(1) A resin composition containing an ultraviolet curable polyfunctional (meth) acrylate (A) having at least two (meth) acryloyl groups in the molecule and phosphorus-doped tin oxide (B), An ultraviolet curable antistatic hard coat resin composition, wherein the doping amount of phosphorus in the doped tin oxide (B) is 0.4 to 0.5% by weight;
(2) The ultraviolet curable type according to item (1), wherein the content of the phosphorus-doped tin oxide (B) is in the range of 80 to 5% by weight when the total solid content of the resin composition is 100% by weight. Antistatic hard coat resin composition,
(3) The ultraviolet curable antistatic hard coat resin composition as described in (1) or (2) above, which contains a photopolymerization initiator (C),
(4) The ultraviolet curable antistatic hard coat resin composition according to any one of (1) to (3) above, which contains a diluent (D),
(5) A film or substrate having a cured layer of the ultraviolet curable antistatic hard coat resin composition according to any one of (1) to (4),
About.

  According to the present invention, an ultraviolet curable antistatic hard coat resin composition having excellent antistatic properties, scratch resistance, abrasion resistance and transparency can be provided.

  Hereinafter, the present invention will be described in detail.

  Examples of the ultraviolet curable polyfunctional (meth) acrylate (A) having at least two (meth) acryloyl groups in the molecule used in the present invention include polyethylene glycol di (meth) acrylate and tripropylene glycol diester. Di (meth) acrylate of ε-caprolactone adduct of (meth) acrylate, hydroxypivalate neopentyl glycol (for example, KAYARAD HX-220, HX-620, etc., manufactured by Nippon Kayaku Co., Ltd.), EO addition of bisphenol A Di (meth) acrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,9-nonanediol diacrylate, trimethylolpropane tri (meth) acrylate, trimethylolpropane polyethoxytri (Me ) Acrylate, pentaerythritol tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, tripentaerythritol octa (meth) acrylate, polyglycidyl compound (bisphenol A type epoxy resin, phenol) Novolac type epoxy resin, trisphenol methane type epoxy resin, polyethylene glycol diglycidyl ether, glycerin polyglycidyl ether, trimethylolpropane polyglycidyl ether) and (meth) acrylic acid, which is a reaction product of epoxy (meth) acrylate, hydroxyl group Multifunctional (meth) acrylate (pentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate Rate, tripentaerythritol hepta (meth) acrylate, etc.) and the polyisocyanate compound (tolylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, etc. multifunctional urethane (meth) acrylate which is a reaction product of hexamethylene diisocyanate and the like). You may use these individually or in mixture of 2 or more types. Preference is given to trifunctional or higher functional (meth) acrylates.

  In the resin composition of the present invention, the amount of the component (A) used is usually 20 to 90% by weight, preferably 30 to 80% by weight when the solid content of the resin composition of the present invention is 100% by weight. It is.

  If necessary, the resin composition of the present invention may optionally contain a (meth) acrylate compound other than the ultraviolet curable polyfunctional (meth) acrylate (A) having at least two (meth) acryloyl groups in the molecule. Can be used. Examples of (meth) acrylate compounds include (meth) acrylate monomers and (meth) acrylate oligomers.

  Examples of the (meth) acrylate monomer include tricyclodecane (meth) acrylate, dicyclopentadieneoxyethyl (meth) acrylate, dicyclopentanyl (meth) acrylate, isobornyl (meth) acrylate, adamantane (meth) acrylate, benzyl ( (Meth) acrylate, tetrahydrofurfuryl (meth) acrylate, morpholine (meth) acrylate, phenylglycidyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl ( And meth) acrylate and ethyl carbitol (meth) acrylate.

  Examples of the (meth) acrylate oligomer include urethane (meth) acrylate and epoxy (meth) acrylate.

  The phosphorus-doped tin oxide (B) used in the present invention can be used if the doping amount of phosphorus is 0.4 to 0.5% by weight, but an organosol dispersed in an organic solvent is preferable. Furthermore, it is preferable that the average particle diameter in the dynamic scattering method measured in a state dispersed in an organic solvent is 100 nm or less. The average particle diameter by the dynamic scattering method is an average particle diameter measured with a Coulter N4 apparatus in the state of phosphorus-doped tin oxide sol. For example, Nissan Chemical Industries, Ltd. cellnax CX series) is mentioned.

  As a method for measuring the doping amount of phosphorus, phosphorous-doped tin oxide was subjected to wet oxidative decomposition, diluted, and phosphorus was measured by ICP emission spectroscopic analysis. Yttrium was used as an internal standard.

  In the resin composition of the present invention, the amount of the component (B) used is 80 to 5% by weight, preferably 60 to 10% by weight when the solid content of the resin composition of the present invention is 100% by weight. It is.

  In mixing and dispersing the component (B) in the resin, a dispersant may be used to stabilize the dispersion. Examples of the dispersant that can be used for this purpose include cationic, anionic, nonionic, and amphoteric surfactants. Preferable examples include Solsperse 20000 manufactured by Zeneca Corporation and TAMNO-15 manufactured by Nikko Chemicals Co., Ltd., which are alkylamine-containing surfactants. The addition amount is 0.5 to 30% by weight, preferably 1 to 20% by weight, based on the component (B).

  Examples of the photopolymerization initiator (C) that can be used in the present invention include benzoins such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin propyl ether, and benzoin isobutyl ether; acetophenone, 2,2-diethoxy-2-phenyl Acetophenone, 1,1-dichloroacetophenone, 2-hydroxy-2-methyl-phenylpropan-1-one, diethoxyacetophenone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl]- Acetophenones such as 2-morpholinopropan-1-one; anthraquinones such as 2-ethylanthraquinone, 2-t-butylanthraquinone, 2-chloroanthraquinone, 2-amylanthraquinone; 2,4-die Thioxanthones such as ruthioxanthone, 2-isopropylthioxanthone, 2-chlorothioxanthone; ketals such as acetophenone dimethyl ketal and benzyl dimethyl ketal; benzophenone, 4-benzoyl-4′-methyldiphenyl sulfide, 4,4′-bismethylamino Benzophenones such as benzophenone; phosphine oxides such as 2,4,6-trimethylbenzoyldiphenylphosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. Further, from the market, Irgacure 184 (1-hydroxycyclohexyl phenyl ketone) and Irgacure 907 (2-methyl-1- (4- (methylthio) phenyl) -2- (4- Morpholinyl) -1-propanone), lucillin TPO (2,4,6-trimethylbenzoyldiphenylphosphine oxide) manufactured by BASF, etc. are easily available. Moreover, you may use these individually or in mixture of 2 or more types.

  In the resin composition of the present invention, the amount used when the component (C) is used is 0.5 to 10% by weight, preferably 100 to 10% by weight, based on the solid content of the resin composition of the present invention. Is 1-7% by weight.

  Moreover, said photoinitiator (C) can also be used together with a hardening accelerator. Examples of the curing accelerator that can be used in combination include triethanolamine, diethanolamine, N-methyldiethanolamine, 2-methylaminoethylbenzoate, dimethylaminoacetophenone, p-dimethylaminobenzoic acid isoamino ester, amines such as EPA, 2- And hydrogen donors such as mercaptobenzothiazole. The usage-amount of these hardening accelerators is 0 to 5 weight% when solid content of the resin composition of this invention is 100 weight%.

  Examples of the diluent (D) that can be used in the present invention include lactones such as γ-butyrolactone, γ-valerolactone, γ-caprolactone, γ-heptalactone, α-acetyl-γ-butyrolactone, and ε-caprolactone; 1,2-dimethoxymethane, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, triethylene glycol dimethyl ether, triethylene glycol diethyl ether, tetraethylene glycol dimethyl ether, tetraethylene glycol diethyl Ethers such as ethers; carbonates such as ethylene carbonate and propylene carbonate Ketones such as methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, acetophenone; phenols such as phenol, cresol, xylenol; ethyl acetate, butyl acetate, ethyl lactate, ethyl cellosolve acetate, butyl cellosolve acetate, carbitol acetate, butyl carbitol acetate, propylene Esters such as glycol monomethyl ether acetate; Hydrocarbons such as toluene, xylene, diethylbenzene, cyclohexane; Halogenated hydrocarbons such as trichloroethane, tetrachloroethane, and monochlorobenzene, and petroleum solvents such as petroleum ether and petroleum naphtha Organic solvents, fluorinated alcohols such as 2H, 3H-tetrafluoropropanol, perfluorobutyl methyl ether, perf Hydrofluoroethers such as Oro butyl ethyl ether; methyl alcohol, ethyl alcohol, isopropyl alcohol, and n- propyl alcohol; and diacetone alcohol combines ketone and both alcohol performance thereof. You may use these individually or in mixture of 2 or more types.

  In the resin composition of the present invention, the amount used when the component (D) is used is in the range of 10 to 80% by weight, preferably 20 to 70% by weight, based on the total amount of the resin composition of the present invention. It is.

  Furthermore, a leveling agent, an antifoaming agent, an ultraviolet absorber, a light stabilizer, an antioxidant, a polymerization inhibitor and the like are added to the photosensitive resin composition of the present invention as necessary. However, it is also possible to provide each intended functionality. Fluorine compounds, silicone compounds, acrylic compounds, etc. as leveling agents, benzotriazole compounds, benzophenone compounds, triazine compounds, etc. as UV absorbers, hindered amine compounds, benzoate compounds as light stabilizers Compounds, etc., antioxidants include phenolic compounds, and polymerization inhibitors include methoquinone, methylhydroquinone, hydroquinone, and the like.

  The resin composition of the present invention can be obtained by mixing the component (A), the component (B) and, if necessary, the component (C), the component (D) and other components in any order.

  The resin composition of the present invention thus obtained is stable over time.

  The antistatic hard coat of the present invention has the above-mentioned ultraviolet curable antistatic hard coat resin composition on a substrate, and the thickness of the resin composition after drying is usually 0.1 to 50 μm, preferably 1 It can apply | coat so that it may become ~ 20micrometer, and it can obtain by irradiating an ultraviolet-ray after drying and forming a cured film.

  When using a film for the substrate, examples of the substrate film include polyester, polypropylene, polyethylene, polyacrylate, polycarbonate, triacetylcellulose, polyethersulfone, and cycloolefin polymer. The film may be a thick sheet. The film to be used may be one provided with a handle or an easy-adhesion layer, or one subjected to surface treatment such as corona treatment.

  Examples of the coating method of the resin composition include bar coater coating, Mayer bar coating, air knife coating, gravure coating, reverse gravure coating, micro gravure coating, micro reverse gravure coater, and die coater. Examples include coating, dip coating, spin coating, and spray coating.

Although ultraviolet rays are irradiated for curing, an electron beam or the like can also be used. In the case of curing with ultraviolet rays, an ultraviolet irradiation device having a xenon lamp, a high-pressure mercury lamp, a metal halide lamp or the like is used as a light source, and the light amount, the arrangement of the light source, etc. are adjusted as necessary. When using a high-pressure mercury lamp, it is preferable to cure at a conveyance speed of 5 to 60 m / min for one lamp having an energy of 80 to 120 W / cm ² . On the other hand, in the case of curing with an electron beam, the photopolymerization initiator (C) may not be added, and an electron beam accelerator having an energy of 100 to 500 eV is preferably used.

  For example, a hard coat layer with a thickness of 1 to 10 μm formed on a polyester film by bar coater coating has a total light transmittance of 90% or more and a surface resistivity of E + 12Ω / □ or less.

  EXAMPLES Hereinafter, although an Example demonstrates this invention still in detail, this invention is not limited by these Examples. Moreover, unless otherwise indicated in an Example, a part shows weight%.

Examples 1 and 2 and Comparative Examples 1 and 2
The resin composition containing the materials shown in Table 1 below is coated on an easy-adhesion-treated PET film (125 μm) with a bar coater, dried at about 80 to 100 ° C., and then cured with an ultraviolet irradiator. An antistatic hard coat film of 2 to 5 μm was obtained. In Table 1, the unit represents “part”.

Table 1
Example 1 Example 2 Comparative Example 1 Comparative Example 2
DPHA 24.00 24.00 24.00 24.00
Irg. 184 0.75 0.75 0.75 0.75
Irg. 907 0.75 0.75 0.75 0.75
Phosphorus-doped tin oxide (1) 15.00
Phosphorus-doped tin oxide (2) 22.50
Phosphorus-doped tin oxide (3) 15.00
Zinc antimonate 22.50
MEK 59.50 52.00 59.50 52.00
Total 100.00 100.00 100.00 100.00

(note)
DPHA: manufactured by Nippon Kayaku Co., Ltd., a mixture of dipentaerythritol pentaacrylate and hexaacrylate (component (A))
Irg. 184: Ciba Specialty Chemicals Co., Ltd., 1-hydroxycyclohexyl phenyl ketone (component (C))
Irg. 907: Ciba Specialty Chemicals Co., Ltd. 2-methyl- [4- (methylthio) phenyl] -2-morpholino-1-propanone (component (C))
Phosphorus-doped tin oxide (1): manufactured by Nissan Chemical Industries, Ltd., trade name, Celnax CX-S300M, solid content 30% methanol sol, phosphorus doping amount 0.43% by weight, average particle diameter by dynamic scattering method 50 nm (component (B))
Phosphorus-doped tin oxide (2): manufactured by Nissan Chemical Industries, Ltd., trade name, Celnax CX-S200IP, solid content 20% IPA sol, phosphorus doping amount 0.44% by weight, average particle diameter by dynamic scattering method 50 nm (component (B))
Phosphorus-doped tin oxide (3): manufactured by Catalyst Kasei Kogyo Co., Ltd., solid content 30% IPA sol, phosphorus doping amount 2.6% by weight ((B) component comparison example)
Zinc antimonate: manufactured by Nissan Chemical Industries, Ltd., solid content 20% IPA sol, average particle diameter of about 90 nm by dynamic scattering method ((B) component comparison example)
MEK: Methyl ethyl ketone (component (D))
IPA: Isopropyl alcohol (component (D))

  The following items were evaluated for the antistatic hard coat films obtained in Examples 1 and 2 and Comparative Examples 1 and 2, and the results are shown in Table 2.

(Pencil hardness)
According to JIS K 5400, the pencil hardness of the coated film having the above composition was measured using a pencil scratch tester. Specifically, on a polyester film having a cured film to be measured, a pencil is applied at a 45 degree angle, and a 1 kg load is applied from above, and the pencil is scratched about 5 mm. expressed.

(Total light transmittance)
Measured using TC-H3DPK, manufactured by Tokyo Denshoku Co., Ltd.

(Haze)
Measured using TC-H3DPK, manufactured by Tokyo Denshoku Co., Ltd.

(Surface resistivity)
Resistivity meter Measured using HIRESTA IP manufactured by Mitsubishi Chemical Corporation.

Table 2
Pencil hardness Total light transmittance Haze Surface resistivity
(%) (%) (Ω / □)
Example 1 2H 92.1 0.3 1.9E + 10
Example 2 2H 92.2 0.3 1.1E + 11
Comparative Example 1 2H 90.9 0.4 OVER
Comparative Example 2 2H 90.7 0.4 2.1E + 11

  The antistatic hard coat films of Examples 1 and 2 showed good results with respect to pencil hardness, total light transmittance, haze, and surface resistivity. In Comparative Example 1, the component (B) was changed to phosphorus-doped tin oxide having a large amount of phosphorus doping, but the total light transmittance was inferior and the surface resistivity could not be measured. Further, Comparative Example 2 is a case where the component (B) is another conductive fine particle (zinc antimonate), but the result is slightly inferior in terms of transmittance as compared with the Example.

Examples 3 and 4 and Comparative Example 3
Next, in order to confirm transparency and antistatic property more clearly, the amount of component (B) added was increased and compared.
A resin composition containing the materials shown in Table 3 was coated on an easy-adhesion-treated PET film (125 μm) with a bar coater, dried at about 80 to 100 ° C., and then cured with an ultraviolet irradiator to obtain a film thickness of 2 An antistatic hard coat film of ˜5 μm was obtained. In Table 1, the unit represents “part”.

Table 3
Example 3 Example 4 Comparative Example 3 Comparative Example 4
Multifunctional urethane 15.50 15.50 15.50 13.80
Irg. 184 0.75 0.75 0.75 0.60
Irg. 907 0.75 0.75 0.75 0.60
Phosphorus-doped tin oxide (1) 43.30
Phosphorus-doped tin oxide (2) 65.00
Phosphorus-doped tin oxide (3) 43.30
Zinc antimonate 75.00
IPA 39.70 18.00 39.70 10.00
Total 100.00 100.00 100.00 100.00

(note)
Polyfunctional urethane: Reaction product of dipentaerythritol pentaacrylate and hexamethylene diisocyanate (component (A))

Table 4
Pencil hardness Total light transmittance Haze Surface resistivity
(%) (%) (Ω / □)
Example 3 2H 91.6 0.4 1.6E + 08
Example 4 2H 91.5 0.4 5.1E + 08
Comparative Example 3 2H 89.8 0.9 OVER
Comparative Example 4 2H 86.1 1.1 2.0E + 10

  The antistatic hard coat films of Examples 3 to 4 showed very good results with respect to pencil hardness, total light transmittance, haze, and surface resistivity. In Comparative Example 3, the component (B) was changed to phosphorus-doped tin oxide having a large phosphorus doping amount, but the total light transmittance and haze were inferior, and the surface resistivity could not be measured. In Comparative Example 4, the component (B) was changed to zinc antimonate, but the transmittance and haze were inferior, and the conductivity was confirmed to be poor in comparison with the Examples.

  The antistatic hard coat film obtained with the resin composition of the present invention has excellent antistatic properties, high transparency, and good hardness, and in particular, plastic optical parts, optical disks, touch panels, flat panel displays, mobile phones. It is a hard coat film suitable for a field such as a film liquid crystal element which dislikes dust and requires hardness and transparency.

Claims (5)

A resin composition containing an ultraviolet curable polyfunctional (meth) acrylate (A) having at least two (meth) acryloyl groups in a molecule and phosphorus-doped tin oxide (B), the phosphorus-doped tin oxide The ultraviolet curable antistatic hard coat resin composition, wherein the phosphorus doping amount of (B) is 0.4 to 0.5% by weight. 2. The ultraviolet curable antistatic hardware according to claim 1, wherein the content of the phosphorus-doped tin oxide (B) is in the range of 80 to 5% by weight when the total solid content of the resin composition is 100% by weight. Coat resin composition. 3. The ultraviolet curable antistatic hard coat resin composition according to claim 1, further comprising a photopolymerization initiator (C). The ultraviolet curable antistatic hard coat resin composition according to any one of claims 1 to 3, further comprising a diluent (D). The film or base material which has a hardened layer of the ultraviolet curable antistatic hard coat resin composition as described in any one of Claims 1 thru | or 4.