Epoxy acrylate prepolymer resin and preparation method thereof and application in photocurable coating

A technology of epoxy acrylic and light-curing coatings, applied in epoxy resin coatings, coatings, etc., can solve the problems of brittleness, poor flexibility, and high viscosity of the cured film, and achieve the effect of improving flexibility and strength

Active Publication Date: 2010-06-23
浙江天和树脂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention overcomes the shortcomings of traditional epoxy acrylates such as high viscosity, brittle cured film, and poor flexibility, and provides an epoxy acrylic prepolymer resin with excellent performance

Method used

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  • Epoxy acrylate prepolymer resin and preparation method thereof and application in photocurable coating
  • Epoxy acrylate prepolymer resin and preparation method thereof and application in photocurable coating
  • Epoxy acrylate prepolymer resin and preparation method thereof and application in photocurable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A kind of preparation method of epoxy acrylic acid prepolymer resin, comprises the steps:

[0090] The first step: under nitrogen protection, add E-51 epoxy resin 196g, ethylene glycol diglycidyl ether 18.5g, poly Ethylene glycol (molecular weight 600) 30g and antioxidant BHT 0.03g, stir evenly at 80°C for about 1 hour;

[0091] The second step: drop the reaction components consisting of 88.6g of methacrylic acid, 6.8g of adipic acid, 0.8g of catalyst triphenylphosphine and 0.015g of polymerization inhibitor p-hydroxyanisole, and slowly heat up to 110°C;

[0092] The third step: heat preservation at 110°C and continue the reaction for about 1 hour. When the acid value is less than 5mgKOH / g, the reaction is terminated to obtain an epoxy acrylic acid prepolymer resin, and then a reactive diluent can be added to the prepared prepolymer resin. Make a dilution.

Embodiment 2

[0094] A kind of preparation method of epoxy acrylic acid prepolymer resin, comprises the steps:

[0095] The first step: under nitrogen protection, add E-51 epoxy resin 196g, ethylene glycol diglycidyl ether 18.5g, poly Ethylene glycol (molecular weight 400) 35g and antioxidant BHT 0.03g, stir evenly at 80°C for about 1 hour;

[0096] The second step: drop the reaction components consisting of 90g of methacrylic acid, 6.5g of adipic acid, 0.8g of catalyst triphenylphosphine and 0.015g of polymerization inhibitor p-hydroxyanisole, and slowly heat up to 110°C;

[0097] The third step: heat preservation at 110°C and continue the reaction for about 1 hour. When the acid value is less than 5mgKOH / g, the reaction is terminated to obtain an epoxy acrylic acid prepolymer resin, and then a reactive diluent can be added to the prepared prepolymer resin. Make a dilution.

Embodiment 3

[0099] A kind of preparation method of epoxy acrylic acid prepolymer resin, comprises the steps:

[0100] The first step: under nitrogen protection, add E-51 epoxy resin 196g, neopentyl glycol diglycidyl ether 19.7g, Polyethylene glycol (molecular weight 600) 30g and antioxidant BHT 0.03g, stir evenly at 80°C for about 1 hour;

[0101] The second step: drop the reaction components consisting of 75.2g of acrylic acid, 5.8g of adipic acid, 0.8g of catalyst triphenylphosphine and 0.015g of polymerization inhibitor p-hydroxyanisole, and slowly heat up to 110°C;

[0102] The third step: heat preservation at 110°C and continue the reaction for about 1 hour. When the acid value is less than 5mgKOH / g, the reaction is terminated to obtain an epoxy acrylic acid prepolymer resin, and then a reactive diluent can be added to the prepared prepolymer resin. Make a dilution.

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Abstract

The invention relates to an epoxy acrylate prepolymer resin and a preparation method thereof and an application in a photocurable coating. The prepolymer has the characteristics of low viscosity, good flexibility, good adhesion and basic colorlessness and can be used for preparing various photocurable coatings and coating various base materials, such as bamboo floor. The epoxy acrylate prepolymer resin is prepared by epoxy resin and methacrylate under the action of the catalyst through ring-opening esterification and is characterized in that the prepolymer resin comprises the following components according to parts by weight: 100 parts of epoxy resin, 35-50 parts of methacrylate, 2-8 parts of long chain saturated dicarboxylic acid, 12-25 parts of polyethylene glycol, 8-12 parts of diglycidyl ether, 0.01-0.05 parts of antioxidant, 0.2-0.5 parts of catalyst and 0.005-0.01 parts of polymerization inhibitor. The viscosity reduction, toughening and modification are carried out for the epoxy acrylate prepolymer resin, the flexibility and strength are improved, the viscosity of the prepolymer resin is effectively reduced, and the prepolymer resin is applicable for preparing the photocurable coatings.

Description

technical field [0001] The present invention relates to epoxy acrylic acid prepolymer resin and its preparation method and its application in light-curing coatings. This prepolymer has the characteristics of low viscosity, good flexibility, good adhesion and basically colorless, and can be prepared into various Light-curing coatings, coating a variety of substrates, such as bamboo and wood floors. Background technique [0002] UV curing is also called ultraviolet curing, and its curing principle is: [0003] It needs to rely on photoinitiators to generate free radicals or cations to initiate polymerization. The crosslinking reaction is carried out through unsaturated double bonds. Compounds with saturated double bonds (prepolymers and monomers) are polymerized and cross-linked into a network-like cured film. [0004] Features of UV Curing Coatings: [0005] UV curing is a chemical method, which is the direct result of light-induced chemical reactions. Using UV curing tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/10C08G59/62C08G59/42C08G59/22C08G59/17C09D163/10
Inventor 林定多马勇陈志祥张雨
Owner 浙江天和树脂有限公司
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