Ultraviolet light curable low viscosity epoxy acrylate resin and preparation method and application thereof

A technology of epoxy acrylic and epoxy resin, which is applied in the direction of epoxy resin coatings, applications, household appliances, etc., can solve the problems of changes in physical properties such as gloss and hardness of epoxy acrylic resin, and achieve uniform distribution of molecular structure and reduce Overall viscosity, low yellowing effect

Active Publication Date: 2017-09-15
南京玖泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents 201610654309.1, 201110332844.2, and 200610157635.8 all change the epoxy acrylic resin unit to reduce the viscosity of the resin by introducing acid anhydride into the epoxy acrylic resin structure; but this method changes the chemical structure of the original epoxy acrylic resin, resulting in epoxy Significant changes in physical properties such as gloss and hardness of acrylic resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the reaction kettle, 1.0 mol of epoxy resin E51 (epoxy group), 200.0 ppm of 2,6-di-tert-butyl-p-cresol and 20.0 ppm of catalyst tetrabutylammonium bromide were added, and the temperature was raised to 70.0 °C with stirring, and 0.95 mol of acrylic acid and Catalyst ferric chloride 100 ppm was fed for 0.5 h; kept at 80 ℃, reacted for 8.0 h, and the acid value was tested to be less than 3.0 mgKOH / g to obtain epoxy acrylic resin.

Embodiment 2

[0030] In the reaction kettle, 1.0 mol of epoxy resin E51 (epoxy group), 200.0 ppm of 2,6-di-tert-butyl-p-cresol and 20.0 ppm of catalyst tetramethylammonium chloride were added, and the temperature was raised to 80.0 °C with stirring, and 1.0 mol of acrylic acid and Catalyst ferric trichloride 100ppm was fed for 0.5 h; kept at 100°C, and after 7.0 h of reaction, the acid value was tested to be less than 3.0 mgKOH / g to obtain epoxy acrylic resin.

Embodiment 3

[0032] In the reaction kettle, 1.0 mol of epoxy resin E51 (epoxy group), 200.0 ppm of 2,6-di-tert-butyl-p-cresol and 20.0 ppm of catalyst tetramethylammonium bromide were added, and the temperature was raised to 90.0 °C with stirring, and 0.95 mol of acrylic acid and Catalyst ferric chloride 100 ppm was fed for 0.5 h; kept at 100 ℃, reacted for 6.0 h, the acid value was less than 3.0 mgKOH / g, and epoxy acrylic resin was obtained.

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PUM

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Abstract

The invention relates to an ultraviolet light curable low viscosity epoxy acrylate resin and a preparation method and application thereof. The preparation method of the ultraviolet light curable low viscosity epoxy acrylate resin comprises the following steps: mixing epoxy resin, a polymerization inhibitor and a catalyst A, stirring, heating to 30-130 DEG C, holding the temperature, and fed-batch adding methyl acrylic acid and a catalyst B within 0.3-2.0 h; and further reacting for 4-12 h after fed-batch addition is finished, and discharging to obtain the ultraviolet light curable low viscosity epoxy acrylate resin, wherein the catalyst A is an organic ammonium compound, and the catalyst B is an iron compound and / or a chromium compound. The epoxy acrylate resin prepared by the preparation method of the invention reduces viscosity while retaining the original physical and chemical properties of epoxy acrylate resin, also has the advantages of good wetting property and low yellow-stain, and can be widely used in plastic jackets, paper varnish, form coating or printing ink.

Description

technical field [0001] The invention relates to the field of ultraviolet light curing, in particular to an ultraviolet light curing low-viscosity epoxy acrylic resin and its preparation method and application. Background technique [0002] Epoxy acrylic resin is currently one of the most widely used and most used UV-curable prepolymers, which is prepared by esterification of epoxy resin and (meth)acrylic acid. The ring-opening reaction of epoxy resin is a special nucleophilic substitution reaction, and both acidic and basic catalysts can realize the ring-opening of epoxy resin. [0003] The application of acid catalysts is greatly limited due to their low catalytic efficiency. At present, the commonly used catalysts for epoxy acrylic resins are organic base catalysts, such as N, N-dimethylaniline, triethanolamine, 4-dimethylaminopyridine, Triethylamine, triphenylphosphine or tetramethylammonium chloride, etc. These organic base catalysts are prone to etherification and oth...

Claims

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Application Information

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IPC IPC(8): C08G59/17C09D163/10C09D11/101
CPCC08G59/1466C09D11/101C09D163/10
Inventor庞来兴
Owner南京玖泰新材料科技有限公司