Curable composition and cured product thereof

A curable composition and compound technology, applied in the direction of adhesive types, adhesive additives, polyurea/polyurethane adhesives, etc., to achieve excellent scratch resistance, transparency and good warpage.

Inactive Publication Date: 2010-03-24
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the method using this technology, there is still room for improvement regarding scratch resistance

Method used

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  • Curable composition and cured product thereof
  • Curable composition and cured product thereof
  • Curable composition and cured product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0140] Hereinafter, although an Example and a comparative example demonstrate this invention in more detail, this invention is not limited by these description at all.

[0141] "Parts" in the examples means "parts by mass".

Synthetic example 1

[0143]

[0144] 100 parts of 2-hydroxyethyl acrylate (manufactured by Osaka Organic Chemical Industry Co., Ltd.), 200 ppm of 2,6-di-tert-butyl-4-methylphenol (BHT, manufactured by Junsei Chemical Co., Ltd.) were added to the reaction vessel. ), 142 parts of hexane (manufactured by Junsei Chemical Co., Ltd.) and 2.8 parts of dibutyltin dilaurate (manufactured by Tokyo Chemical Industry Co., Ltd.) were stirred. Then, 122 parts of 2-acryloyloxyethyl isocyanate (manufactured by Showa Denko Co., Ltd., brand name Karenz (registered trademark) AOI) was slowly added dropwise, and it stirred at room temperature. It was confirmed by high-speed liquid chromatography that the peak of 2-hydroxyethyl acrylate had almost disappeared, and the reaction was terminated, followed by washing four times with 203 parts of hexane containing 200 ppm of BHT to obtain a carbamate compound (A-1).

Synthetic example 2

[0146]

[0147] In addition to using 2-methacryloyloxyethyl isocyanate (manufactured by Showa Denko Co., Ltd., trade name Karenz (registered trademark) MOI) instead of 2-acryloyloxyethyl isocyanate in Synthesis Example 1, the same method as in Synthesis Carbamate compound (A-2) was obtained in the same manner as in Example 1.

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Abstract

It is an object of the present invention to provide a curable composition having excellent curability and capable of forming a cured film which is excellent in surface hardness, scratch resistance, flexibility, bending property, transparency and curling property, and a cured product thereof. The curable composition of the present invention is characterized by comprising (A) a urethane compound represented by the following general formula (1), (B) a thiol compound and (C) a polymerization initiator. wherein R 1 is a straight-chain or branched divalent aliphatic group, a divalent organic group having an alicyclic group, a divalent organic group having an aromatic ring or ¢-(CH 2 ) a -O-(CH 2 ) b -! c (a and b are each independently an integer of 1 to 10, and c is an integer of 1 to 5), R 2 is a straight-chain or branched divalent aliphatic group, a divalent organic group having an alicyclic group, a divalent organic group having an aromatic ring or ¢-(CH 2 ) d -O-(CH 2 ) e -! f (d and eare each independently an integer of 1 to 10, and f is an integer of 1 to 5), and R 3 and R 4 are each independently a hydrogen atom or a methyl group.

Description

technical field [0001] The present invention relates to a curable composition cured by irradiating active energy rays such as ultraviolet rays and electron beams, and a cured product thereof. Background technique [0002] Although thermosetting and solvent-volatile resin compositions are sometimes used for coating films, there are problems that thermosetting resin compositions are not suitable for substrates without heat resistance, and solvent-volatile resin compositions have a large load on the environment. . [0003] In addition, in recent years, as a protective coating material for preventing scratches and contamination on the surface of various substrates, as well as adhesives and sealants for various substrates, it is required to be able to form hardness, softness, etc. on the surface of various substrates. A curable composition of a cured film excellent in durability, scratch resistance, abrasion resistance, low warpage (the cured film obtained by curing the curable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/04C09J11/06C09D7/12C09J175/14C09D175/14G02B1/04
CPCC08G18/8116C09D175/16C08G18/672C08F283/006
Inventor 浦川庆史石井伸晃富田美雪服部阳太郎池田晴彦室伏克己
Owner SHOWA DENKO KK
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