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A kind of silicon-modified matte UV resin and preparation method thereof

A silicon-modified resin technology, applied in the field of silicon-modified matte UV resin, can solve problems such as poor alignment and orientation of matting powder, unstable gloss, and blooming of the paint film surface, achieving good application prospects and high use value , the effect of not easy to change color

Active Publication Date: 2021-07-13
JIANGMEN HENGZHIGUANG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of actual use, the arrangement and orientation of the matting powder is often not good, resulting in some problems such as difficulty in matting, unstable gloss, and blooming on the surface of the paint film.

Method used

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  • A kind of silicon-modified matte UV resin and preparation method thereof
  • A kind of silicon-modified matte UV resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0075] The present invention also provides the preparation method of above-mentioned resin, it comprises the following steps at least:

[0076] (1) Add crotonic acid, bisphenol A epoxy acrylate, 4-hydroxybutyl acrylate, ethyl isocyanate, N-(hydroxyethyl)-N-methylaminopropyltrimethoxysilane, bismuth isooctanoate Put it into the reaction kettle, stir and react for 2-3 hours at 80-90°C to obtain the silicon-modified resin intermediate;

[0077] (2) Put glycerin and hydrochloric acid into the silicon-modified resin intermediate obtained in step (1), and disperse for 1 to 2 hours at 60°C to 80°C under nitrogen protection;

[0078] (3) Cool the mixture obtained in step (2) to 40-50°C, add 4-tert-butylcatechol and continue to keep warm and disperse for 1-2 hours, then depressurize to a vacuum of 0.015-0.025MPa to dehydrate until anhydrous is formed So far, cooling to obtain polycondensate;

[0079] (4) Add hypromellose to the polycondensate obtained in step (3), reduce the temperat...

Embodiment 1

[0083] Embodiment 1 provides a silicon-modified matte UV resin, which is composed of the following raw materials in parts by weight: 25 parts of organosilicon monomers, 30 parts of resin intermediates, 20 parts of organic acids, 20 parts of polyols, the first catalyst 0.35 parts, 0.025 parts of the second catalyst, 0.08 parts of a polymerization inhibitor, 0.07 parts of a stabilizer, 7 parts of a neutralizing agent, and 18 parts of water.

[0084] The organosilicon monomer is N-(hydroxyethyl)-N-methylaminopropyltrimethoxysilane.

[0085] The N-(hydroxyethyl)-N-methylaminopropyltrimethoxysilane (CAS No. 330457-46-0) was purchased from Shanghai Shiyang Chemical Co., Ltd.

[0086] The resin intermediates are bisphenol A epoxy acrylate, 4-hydroxybutyl acrylate and ethyl isocyanate.

[0087] The weight ratio of the bisphenol A epoxy acrylate, 4-hydroxybutyl acrylate and ethyl isocyanate is 2:1:1.

[0088] The bisphenol A epoxy acrylate is produced by the company itself, and the n...

Embodiment 2

[0102] Embodiment 2 provides a silicon-modified matte UV resin. The difference from Example 1 is that in the resin raw material, there are 20 parts of organosilicon monomers, 25 parts of resin intermediates, 15 parts of organic acids, and 15 parts of polyols. 0.3 parts of the first catalyst, 0.02 parts of the second catalyst, 0.05 parts of a polymerization inhibitor, 0.05 parts of a stabilizer, 5 parts of a neutralizing agent, and 15 parts of water.

[0103] This example also provides a method for preparing a silicon-modified matte UV resin, the steps of which are similar to those of Example 1.

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Abstract

The invention belongs to the technical field of UV curing coatings, and specifically relates to a silicon-modified matte UV resin. ~25 parts, polyol 15~25 parts, first catalyst 0.3~0.4 parts, second catalyst 0.02~0.03 parts, polymerization inhibitor 0.05~0.1 parts, stabilizer 0.05~0.1 parts, neutralizer 5~10 parts, 15-20 parts of water. The resin is not easy to change color and crack under high temperature, and at the same time, it can achieve a matte effect without adding a matting agent, and has high use value and good application prospect.

Description

technical field [0001] The invention belongs to the technical field of UV curing coatings, in particular to a silicon-modified matte UV resin. Background technique [0002] UV resin, also known as photosensitive resin, is an oligomer that can rapidly undergo physical and chemical changes in a short period of time after being irradiated by ultraviolet rays, and then cross-link and cure the oligomer, so that the photocurable system changes from liquid to solid. UV resin has the advantages of fast curing rate, less volatile organic matter, and environmental friendliness, and has been developed rapidly in recent years. However, its use temperature after curing generally cannot exceed 150°C, so its application is subject to certain restrictions. [0003] On the other hand, due to the continuous improvement of people's living standards and the beginning of individualized and leisure-oriented consumption concepts, the dominance of high-gloss coatings in the market has gradually ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D183/08C09D183/04
CPCC08G77/04C08G77/26C09D4/00C09D163/10C09D183/04C09D183/08
Inventor 李毅全
Owner JIANGMEN HENGZHIGUANG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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