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A kind of low-viscosity fast-curing uv polyester acrylate and its preparation process

A polyester acrylate, fast curing technology, used in polyester coatings, coatings, etc., can solve the problems of high viscosity and slow curing, and achieve the effects of low viscosity, fast curing and good economy

Active Publication Date: 2021-06-04
YINGDE YAJIA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-viscosity fast-curing UV polyester acrylate and its preparation process, which solves the technical problems of high viscosity and slow curing of existing UV polyester acrylate

Method used

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  • A kind of low-viscosity fast-curing uv polyester acrylate and its preparation process
  • A kind of low-viscosity fast-curing uv polyester acrylate and its preparation process
  • A kind of low-viscosity fast-curing uv polyester acrylate and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Put 20 parts of maleic anhydride, 10.1 parts of phthalic anhydride, 5.8 parts of deionized water and 0.1 part of hypophosphorous acid into the reaction kettle in sequence, and react at 110-120°C for 0.5 hours;

[0029] (2) Add 30 parts of dicyclopentadiene dropwise for 1.5 hours to react, and keep the temperature at 120° C. for 2.5 hours after dropping;

[0030] (3) Add 20 parts of diethylene glycol, 14.4 parts of pentaerythritol, 8 parts of fumaric acid and 1.5 parts of toluene, raise the temperature to 200°C, keep the system at 200°C, measure the acid value of the reaction system until the acid value of the reaction system is less than 30mgKOH / g;

[0031] (4) Keep the vacuum degree not less than negative 0.085MPa, and continue to cool down to 90°C after vacuuming out toluene to obtain unsaturated polyester;

[0032] (5) By weight percentage, that is, unsaturated polyester is 70wt%, acrylic acid monomer is 15wt%, epichlorohydrin is 13.5wt%, catalyst is 1wt%, poly...

Embodiment 2

[0036] (1) Put 20 parts of maleic anhydride, 10.1 parts of phthalic anhydride, 5.8 parts of deionized water and 0.1 part of hypophosphorous acid into the reaction kettle in sequence, and react at 110-120°C for 0.5 hours;

[0037] (2) Add 30 parts of dicyclopentadiene dropwise for 1.5 hours to react, and keep the temperature at 120° C. for 2.5 hours after dropping;

[0038] (3) Add 20 parts of diethylene glycol, 14.4 parts of pentaerythritol, 8 parts of fumaric acid and 1.5 parts of toluene, raise the temperature to 200°C, keep the system at 200°C, measure the acid value of the reaction system until the acid value of the reaction system is less than 30mgKOH / g;

[0039] (4) Keep the vacuum degree not less than negative 0.085MPa, and continue to cool down to 90°C after vacuuming out toluene to obtain unsaturated polyester;

[0040] (5) By weight percentage, that is, unsaturated polyester is 72wt%, acrylic acid monomer is 15wt%, epichlorohydrin is 12wt%, catalyst is 0.5wt%, poly...

Embodiment 3

[0044] (1) Put 20 parts of maleic anhydride, 10.1 parts of phthalic anhydride, 5.8 parts of deionized water and 0.1 part of hypophosphorous acid into the reaction kettle in sequence, and react at 110-120°C for 0.5 hours;

[0045] (2) Add 30 parts of dicyclopentadiene dropwise for 1.5 hours to react, and keep the temperature at 120° C. for 2.5 hours after dropping;

[0046] (3) Add 20 parts of diethylene glycol, 14.4 parts of pentaerythritol, 8 parts of fumaric acid and 1.5 parts of toluene, raise the temperature to 200°C, keep the system at 200°C, measure the acid value of the reaction system until the acid value of the reaction system is less than 30mgKOH / g;

[0047] (4) Keep the vacuum degree not less than negative 0.085MPa, and continue to cool down to 90°C after vacuuming out toluene to obtain unsaturated polyester;

[0048] (5) By weight percentage, that is, unsaturated polyester is 70wt%, acrylic acid monomer is 15wt%, epichlorohydrin is 13.5wt%, catalyst is 1wt%, poly...

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Abstract

The invention relates to the technical field of fine chemical preparation, and discloses a low-viscosity fast-curing UV polyester acrylate and a preparation process thereof, which is prepared from the following components: 68-79 wt% of unsaturated polyester, acrylic monomer 10-15wt%, epichlorohydrin 10-15wt%, catalyst 0.5-1wt%, polymerization inhibitor 0.5-1wt%; the unsaturated polyester includes 20 parts by weight of maleic anhydride, phthalic anhydride 10.1 parts of diformic anhydride, 5.8 parts of deionized water, 0.1 part of hypophosphorous acid, 30 parts of dicyclopentadiene, 20 parts of diethylene glycol, 14.4 parts of pentaerythritol, 8 parts of fumaric acid and 1.5 parts of toluene. The UV polyester acrylate of the present invention has the advantages of low viscosity, fast curing, high reactivity, etc., and has good economy, which is beneficial to the mass preparation and popularization of UV paints. The preparation process of the present invention is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of fine chemical preparation, and in particular relates to a low-viscosity and fast-curing UV polyester acrylate and a preparation process thereof. Background technique [0002] At present, polyester acrylate is a common UV oligomer, which is widely used in UV coatings, UV inks and other fields. However, the traditional polyester acrylate has high viscosity, poor reactivity, and slow curing. When making paint, it is necessary to add a part of epoxy acrylate and reactive diluent to achieve the effect of paint, which greatly increases the cost of UV paint. Conducive to a large number of promotion of UV paint. Therefore, the preparation of an economical, low-viscosity and high-activity polyester acrylate is a hot spot in current industry research. Contents of the invention [0003] The purpose of the present invention is to provide a low-viscosity fast-curing UV polyester acrylate and its preparation proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D7/63C08G63/52
CPCC08G63/52C09D167/06C09D7/63
Inventor 刘文革王瑛
Owner YINGDE YAJIA PAINT
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