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Curable resin composition

A technology of curable resin and composition, applied in the direction of coating, etc., can solve the problems of large curing shrinkage, small radius of curvature, bad condition, etc., and achieve the effect of low curling and high pencil hardness

Inactive Publication Date: 2013-07-17
RESONAC HOLDINGS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since curing shrinkage is large, the radius of curvature at the time of curing may be small, which may cause problems in the manufacturing process

Method used

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  • Curable resin composition
  • Curable resin composition
  • Curable resin composition

Examples

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Comparison scheme
Effect test

Embodiment

[0148] Hereinafter, although an Example demonstrates this invention, this invention is not limited to these Examples.

[0149] (1) Synthesis of Copolymer (A)

manufacture example 1

[0150] [Production Example 1]: Synthesis of Copolymer (P-1) with Unsaturated Groups in Side Chains

[0151] In a reaction vessel equipped with a thermometer, a stirring bar, a reflux cooler and a dropping funnel, add a 50% / 50% mixed solution of propylene glycol monomethyl ether and methyl ethyl ketone (hereinafter, abbreviated as PGME, MEK mixed solution) After 115.0 parts by mass and 3.0 parts by mass of pentaerythritol tetrakis(3-mercaptopropionate) (manufactured by SC Organic Chemicals Co., Ltd., PEMP), it was heated to about 80°C. Therein, 97.6 parts by mass of methyl methacrylate (hereinafter, abbreviated as MMA), 72.6 parts by mass of acrylic acid (hereinafter, abbreviated as Aa), cyclohexane methacrylate (hereinafter, abbreviated as CHMA) were added dropwise over 2 hours. ) 43.1 parts by mass, 2-ethylhexyl methacrylate (hereinafter, abbreviated as 2EHMA) 13.6 parts by mass, azobisisobutyronitrile (hereinafter, abbreviated as AIBN) 0.9 parts by mass, 2-ethylhexylthioglyc...

manufacture example 2～6

[0153] Except that the components used and their usage ratios are shown in Table 1, the same method as in Production Example 1 was used to obtain copolymers (P-2) to (P-6) having unsaturated groups in their side chains. . MAa in Table 1 represents methacrylic acid, and 4-HBAGE represents 4-hydroxybutyl acrylate glycidyl ether. MAa was added instead of Aa, and 4-HBAGE was added instead of GMA.

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Abstract

The present invention is a curable resin composition characterized by containing (A) a copolymer represented by general formula (1) (in the formula, X denotes an atomic group formed by removing a number (k) of mercapto groups from a polyfunctional thiol compound having at least k mercapto groups, Y denotes a monovalent organic group derived from a copolymer obtained by copolymerizing an unsaturated monomer, and k is an integer between 3 and 10), (B) silica microparticles, (C) a reactive monomer and (D) a polymerization initiator. The present invention can provide a hard coating agent which exhibits little shrinkage upon curing and which can achieve both little shrinkage upon curing and blocking resistance if necessary and, by using the hard coating agent, can also provide a hard coating film or hard coating-treated plastic base material having high pencil hardness and low curling properties.

Description

technical field [0001] The present invention relates to an optical film such as a flat panel display that can form a cured coating film having high pencil hardness and low curing shrinkage, and is excellent in scratch resistance and transparency, and can impart properties such as blocking resistance to the cured coating film as required , and further relate to an active energy ray-curable hard coat composition used in the manufacture of a surface protective coating for plastic substrates such as polycarbonate resin, ABS resin, and acrylic resin, and a cured product thereof, and a cured product comprising the same A film or molded article of the formed coating film. Background technique [0002] Since the surface of a plastic sheet, plastic film, etc. is relatively soft, a hard coat is applied to the surface of the material in order to increase the surface hardness. In addition, regarding resin substrates such as polycarbonate and ABS, the same treatment has been widely perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/12C09D4/02C09D157/06
CPCC09D4/00C09D157/06C09D181/02C08F290/12C08K7/18C08K3/36C08F283/008C08F283/01C08F222/10C08L57/06
Inventor 土井满安井义胜石井伸晃大竹功浦川克朗大井宽子服部阳太郎
Owner RESONAC HOLDINGS CORPORATION
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