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Ultraviolet light curing polyester acrylate and preparation method thereof

A polyester acrylate and acrylate technology, applied in the field of low molecular weight polyester acrylate and its synthesis, can solve the problems of poor adhesion, long preparation time, slow resin curing speed, etc., to improve brittleness and fast curing speed , the effect of low production cost

Active Publication Date: 2012-12-26
上海展辰涂料有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The polyester acrylate of above-mentioned report, weak point is that the time of preparation is long, and to a certain extent resin curing speed is slow, and the deficiencies such as poor adhesion

Method used

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  • Ultraviolet light curing polyester acrylate and preparation method thereof
  • Ultraviolet light curing polyester acrylate and preparation method thereof
  • Ultraviolet light curing polyester acrylate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of UV-cured low-viscosity polyester acrylate resin:

[0023] 1) Add 10 parts by weight of epichlorohydrin with a molecular weight of 92, 56 parts by weight of phthalic anhydride, and 67 parts by weight of maleic anhydride into the reactor, and react at 80°C for 2 hours;

[0024] 2) Add 25 parts by weight of hydroxyethyl acrylate to the reactor, and react at 90°C for 2 hours;

[0025] 3) Add 0.5 parts by weight of triethylamine to the reacted product in step 2), and then add 0.8 parts by weight of p-hydroxyanisole under the protection of nitrogen, and react at a temperature of 100° C. for 2 hours;

[0026] 4) Add 0.1 parts by weight of nitrobenzene to the reacted product in step 3), and react at a temperature of 105° C. for 2 hours. Stir and mix, and vacuumize to remove the smell, and then the product is obtained.

Embodiment 2

[0028] Preparation of UV-cured low-viscosity polyester acrylate resin:

[0029] 1) Add 20 parts by weight of epichlorohydrin with a molecular weight of 92, 52 parts by weight of phthalic anhydride and 70 parts by weight of maleic anhydride into the reactor, and react at 85°C for 2 hours;

[0030] 2) Add 30 parts by weight of hydroxyethyl acrylate to the reactor, and react at 95°C for 2 hours;

[0031] 3) Add 0.8 parts by weight of triethylamine to the reacted product in step 2), then add 1.5 parts by weight of p-hydroxyanisole under the protection of nitrogen, and react at a temperature of 100°C for 2 hours;

[0032] 4) Add 0.3 parts by weight of nitrobenzene to the reacted product in step 3), and react at a temperature of 102° C. for 2 hours. Stir and mix, and vacuumize to remove the smell, and then the product is obtained.

Embodiment 3

[0034] Preparation of UV-cured low-viscosity polyester acrylate resin:

[0035] 1) Add 30 parts by weight of epichlorohydrin with a molecular weight of 92, 65 parts by weight of phthalic anhydride, and 75 parts by weight of maleic anhydride into the reactor, and react at 90°C for 2 hours;

[0036] 2) Add 20 parts by weight of hydroxyethyl acrylate to the reactor, and react at 100°C for 2 hours;

[0037] 3) Add 1.0 parts by weight of triethylamine to the reacted product in step 2), then add 1.0 parts by weight of p-hydroxyanisole under the protection of nitrogen, and react at a temperature of 105°C for 2 hours;

[0038] 4) Add 0.5 parts by weight of nitrobenzene to the reacted product in step 3), react at a temperature of 110° C. for 2 hours, mix and stir, and vacuumize to remove the smell to obtain the product.

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Abstract

The invention provides ultraviolet light curing polyester acrylate and a preparation method of the ultraviolet light curing polyester acrylate. The preparation method comprises the following steps: (1) reacting epoxy chloropropane with binary acid, and adding acrylic ester for reaction; (2) adding catalyst in a reaction product of the step (1), and then adding a promoter for reaction under the protection of nitrogen; and (3) adding nitrobenzene into a reaction product of the step (2) for reaction, and collecting the ultraviolet light curing polyester acrylate from the reaction products. The ultraviolet light curing polyester acrylate prepared by adopting the method is fast in curing speed, good in flexibility, and short in preparation technique period. The fragility of the resin is improved to a certain degree, and the modified resin has the characteristics of being fast in curing speed, low in viscosity and good in flexibility. The resistance to chemicals of the UV (ultraviolet) curing system can be effectively improved, and meanwhile the flexibility is excellent. The product has good coated film brightness and flexibility, and is environment-friendly and non-toxic and low in production cost.

Description

technical field [0001] The present invention relates to a kind of low molecular weight polyester acrylate and its synthesis method. Background technique [0002] Polyester acrylate is a kind of acrylated dibasic acid and propylene oxide, which improves the brittleness of the resin to a certain extent. The modified resin has the characteristics of fast curing speed, low viscosity and good flexibility. . [0003] At present, there have been many literatures reporting UV-curable polyester acrylate resins, such as: "Research on the Synthesis of Polyester Acrylate Prepolymers" published in the journal "Elastomer", Issue 3, 2010 Author: Yu Lanying , Xie Hui. "Development of Acrylic Modified Unsaturated Polyester" published by <<Guangzhou Chemical Industry>>, Issue 3, 2012 Authors: Zhao Hongkai, Wang Hongjie, etc. [0004] The polyester acrylate of above-mentioned report, shortcoming is that the time of preparation is long, and resin curing speed is slow to a certain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/80C07C69/60C07C67/29C09D4/02C09D11/00C09D11/101
Inventor 关存州朱强刘志刚
Owner 上海展辰涂料有限公司
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