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Thermosetting resin composition, coating film formation method, and cured coating film

A resin composition and thermosetting technology, applied in the fields of thermosetting resin composition, coating film formation and cured coating film, can solve problems such as low reactivity and achieve the effect of good curing performance

Active Publication Date: 2021-11-12
KYOEISHA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reactivity of the transesterification reaction of such a primary ester group with a hydroxyl group is low

Method used

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  • Thermosetting resin composition, coating film formation method, and cured coating film
  • Thermosetting resin composition, coating film formation method, and cured coating film
  • Thermosetting resin composition, coating film formation method, and cured coating film

Examples

Experimental program
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Effect test

Embodiment

[0396] Hereinafter, the present invention will be described in more detail based on examples. In addition, this invention is not limited to the following Example. It should be noted that the parts herein represent weight.

Synthetic example 1

[0398] Mix 54 parts of ethylene glycol monoacetoacetate monomethacrylate, 58 parts of n-butyl acrylate, 38 parts of potassium carbonate, 2 parts of 18-crown-6-ether, and 112 parts of tetrahydrofuran, and stir at 50°C for 3 hours . After completion of the reaction, cyclohexane and water were thrown in and washed with water. The organic layer was neutralized with saturated ammonium chloride aqueous solution, washed with water twice, and the obtained organic layer was concentrated under reduced pressure to obtain monomer A.

Synthetic example 2

[0400] 54 parts of ethylene glycol monoacetoacetate monomethacrylate, 43 parts of methyl acrylate, 33 parts of potassium carbonate, 2 parts of 18-crown-6-ether, and 97 parts of tetrahydrofuran were mixed, and stirred at 50° C. for 3 hours. After completion of the reaction, cyclohexane and water were thrown in and washed with water. The organic layer was neutralized with saturated ammonium chloride aqueous solution, washed with water twice, and the obtained organic layer was concentrated under reduced pressure to obtain monomer B.

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Abstract

The present invention addresses the problem of providing a thermosetting coating composition that undergoes transesterification as a curing reaction, and can be used as a coating composition. This thermosetting resin composition contains a compound (A) that is a compound (A-a) having two or more -COOR (R represents a primary or secondary alkyl group) and / or a compound (A-b) having a hydroxy group and one -COOR (R represents a primary or secondary alkyl group), a polyol (B) having two or more hydroxy groups, and a transesterification catalyst (C).

Description

technical field [0001] The present invention relates to a thermosetting resin composition using a transesterification reaction using a transesterification catalyst as a curing reaction, a coating film forming method and a cured coating film using the composition. Background technique [0002] The inventors of the present invention have studied a thermosetting resin composition having a transesterification reaction as a curing reaction (Patent Document 1). According to recent studies, it has been found that by using a transesterification reaction as a curing reaction, it is possible to secure curing performance equivalent to the generally known curing using a melamine resin or a polyisocyanate compound. [0003] Melamine resins and polyisocyanate compounds have good thermal reactivity, and the resulting cured resins have excellent properties, and thus have been widely used conventionally. However, melamine resin is considered to be a cause of sick building syndrome due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/28C08L33/04
CPCC08F220/1804C08F8/14C09D133/066C09D167/00C08F220/20C08F212/08C08L67/02C08K5/10C08K5/11C08F2810/20C08G63/47C09D167/06
Inventor 森胁佑也浅田耕资吞海克竹中直巳
Owner KYOEISHA CHEM CO LTD
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