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Photocureable coating as well as preparation method and application thereof

A technology for light-curing coatings and raw materials, used in polyurea/polyurethane coatings, coatings, chemical industries, etc., can solve problems such as poor bending resistance and poor adhesion, and achieve improved hydrophilicity, high solid content, and improved hydrophilicity. water effect effect

Active Publication Date: 2021-07-30
佳化化学(抚顺)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the need to introduce sulfonic acid, carboxylic acid and other groups that have a corrosive effect on the base material in the prior art, and the coating needs to be cured at high temperature, has poor adhesion, and is resistant to bending. defects such as poor refractivity, thereby providing a light-cured coating and its preparation method and application

Method used

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  • Photocureable coating as well as preparation method and application thereof
  • Photocureable coating as well as preparation method and application thereof
  • Photocureable coating as well as preparation method and application thereof

Examples

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Embodiment 1

[0035] The present embodiment provides a kind of photocurable coating, and its raw material comprises 20kg hyperbranched polyglycerol acrylate, 30kg urethane acrylate, 20kg trimethylolpropane triacrylate, 5kg 1-hydroxycyclohexyl acetophenone, 0.5kg disinfectant Foaming agent and 0.5kg leveling agent.

[0036] The preparation method of the above-mentioned light-cured coating comprises that all raw materials are mixed uniformly to obtain the light-cured coating.

[0037] Wherein, the preparation method of hyperbranched polyglycerol acrylate comprises, 200g hyperbranched polyglycerin with molecular weight 2000, 890g methyl acrylate and 5.05g tetrabutyl titanate are mixed, reflux at 100 ℃, fractionate methanol through rectification column, After reacting for 6 hours, excess methyl acrylate was distilled off to obtain hyperbranched polyglycerol acrylate, wherein the saponification value of hyperbranched polyglycerol acrylate was 83.2 mg / g.

Embodiment 2

[0039] The present embodiment provides a kind of photocurable coating, and its raw material comprises 15kg hyperbranched polyglycerol acrylate, 25kg polyurethane acrylate, 20kg polyethylene glycol 400 diacrylate, 23kg ethoxytrimethylolpropane triacrylate, 7kg 2-methyl-2-hydroxy-1-phenylacetone, 0.5kg defoamer and 0.5kg leveling agent.

[0040] The preparation method of the above-mentioned light-cured coating comprises that all raw materials are mixed uniformly to obtain the light-cured coating.

[0041]Wherein, the preparation method of hyperbranched polyglycerin acrylate comprises, 300g hyperbranched polyglycerin with molecular weight 3000, 1335g methyl acrylate and 6.23g tetrabutyl titanate are mixed, reflux at 100 ℃, fractionate methanol through rectification column, After reacting for 6 hours, excess methyl acrylate was distilled off to obtain hyperbranched polyglycerol acrylate, wherein the saponification value of hyperbranched polyglycerol acrylate was 112.3 mg / g.

Embodiment 3

[0043] The present embodiment provides a kind of photocurable coating, and its raw material comprises 15kg hyperbranched polyglycerol acrylate, 25kg polyurethane acrylate, 20kg polyethylene glycol 400 diacrylate, 23kg ethoxytrimethylolpropane triacrylate, 7kg 1-hydroxycyclohexylacetophenone, 0.5kg defoamer and 0.5kg leveling agent.

[0044] The preparation method of the above-mentioned light-cured coating comprises that all raw materials are mixed uniformly to obtain the light-cured coating.

[0045] Among them, the preparation method of hyperbranched polyglycerol acrylate includes mixing 200g of hyperbranched polyglycerol with a molecular weight of 4000, 670g of methyl acrylate and 3.5g of triethylamine, refluxing at 100°C, fractionating methanol through a rectification column, and reacting for 6h Afterwards, excess methyl acrylate was distilled off to obtain hyperbranched polyglycerol acrylate, wherein the saponification value of hyperbranched polyglycerol acrylate was 90.9 ...

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Abstract

The invention belongs to the technical field of coating preparation, and particularly relates to a photocureable coating as well as a preparation method and application thereof. The coating comprises the following raw materials in parts by weight: 5-20 parts of hyperbranched polyglycerol fatty acid ester, 10-50 parts of polyurethane acrylate, 10-50 parts of a reactive diluent, 0.5-8 parts of a photoinitiator and 0.1-2 parts of an auxiliary agent. When the hydrophilicity of the coating is improved, corrosive groups such as sulfonic acid and carboxylic acid do not need to be introduced, the hyperbranched polyglycerol fatty acid ester contains a large number of ether bonds and has good flexibility, and the hydrophilicity, the adhesive force and the bending resistance of the coating can be improved through the synergistic effect of the hyperbranched polyglycerol fatty acid ester and the polyurethane acrylate. The hyperbranched polyglycerol fatty acid ester with the saponification value of 50-300mg / g improves the hydrophilic effect of the coating on the premise of not influencing other properties of the coating.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a light-cured paint and its preparation method and application. Background technique [0002] Due to its high efficiency, energy saving, economy and environmental friendliness, UV-curable coatings have received more and more attention in recent years, and have been used in wood, ink, plastic, adhesives, electronic component packaging materials, food packaging, magazine covers, It has been widely used in fields such as medical equipment and automobile industry. UV-curable coatings are mainly composed of oligomers, reactive diluents, photoinitiators and additives. The main reaction process of UV curing is the decomposition of photoinitiator caused by radiation, generating active free radicals and further initiating the polymerization reaction and crosslinking of reactive diluent / oligomer. [0003] With the continuous development of the national economy and t...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/63
CPCC09D175/14C09D7/63C08K5/103Y02P20/10
Inventor 郭彦彬李玉博
Owner 佳化化学(抚顺)新材料有限公司
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