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Low-viscosity fast curing UV polyester acrylate and preparation technology thereof

A polyester acrylate, fast curing technology, applied in the direction of polyester coatings, coatings, etc., can solve the problems of slow curing and high viscosity, and achieve the effect of fast curing, low viscosity and high reactivity

Active Publication Date: 2019-08-09
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 kind of UV polyester acrylate of low viscosity curing fast and preparation technology thereof, has solved the technical problem that existing UV polyester acrylate viscosity is high, curing is slow

Method used

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  • Low-viscosity fast curing UV polyester acrylate and preparation technology thereof
  • Low-viscosity fast curing UV polyester acrylate and preparation technology thereof
  • Low-viscosity fast curing UV polyester acrylate and preparation technology thereof

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 in 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 the 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%, ...

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 in 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 the 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%, ...

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 in 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 the 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%, ...

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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 technology thereof. The low-viscosity fastcuring UV polyester acrylate is prepared from 68-79 wt% of unsaturated polyester, 10-15 wt% of an acrylic monomer, 10-15 wt% of epichlorohydrin, 0.5-1 wt% of a catalyst and 0.5-1 wt% of a polymerization inhibitor; and the unsaturated polyester comprises, by weight, 20 parts of maleic anhydride, 10.1 parts of phthalic 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 invention has the advantagesof low viscosity, fastness in curing, high reaction activity, good economical property, and facilitation of large-scale preparation and promotion of UV paints; and the preparation technology is simple, and is convenient 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 kind of low-viscosity fast-curing UV polyester acrylate and its preparatio...

Claims

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Application Information

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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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