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A kind of photocuring coating and its preparation method and application

A technology of light-curing coatings and raw materials, applied in polyurea/polyurethane coatings, coatings, chemical industries, etc., can solve problems such as poor adhesion and poor bending resistance, achieve high solid content, improve hydrophilicity, and reduce equipment input effect

Active Publication Date: 2022-06-07
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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  • A kind of photocuring coating and its preparation method and application
  • A kind of photocuring coating and its preparation method and application
  • A kind of photocuring coating and its preparation method and application

Examples

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Embodiment 1

[0035] This embodiment provides a light-cured coating, the raw materials of which include 20kg of hyperbranched polyglycerol acrylate, 30kg of urethane acrylate, 20kg of trimethylolpropane triacrylate, 5kg of 1-hydroxycyclohexylacetophenone, 0.5kg of Foaming agent and 0.5kg leveling agent.

[0036] The preparation method of the above-mentioned light-curing coating includes: obtaining the light-curing coating after mixing all the raw materials uniformly.

[0037] Wherein, the preparation method of hyperbranched polyglycerol acrylate comprises the following steps: mixing 200g hyperbranched polyglycerol with a molecular weight of 2000, 890g methyl acrylate and 5.05g tetrabutyl titanate, refluxing at 100° C., fractionating methanol through a rectifying column, After 6 hours of reaction, 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] This embodiment provides a light-curing coating, the raw materials of which include 15kg of hyperbranched polyglycerol acrylate, 25kg of urethane acrylate, 20kg of polyethylene glycol 400 diacrylate, 23kg of ethoxylated trimethylolpropane 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-curing coating includes: obtaining the light-curing coating after mixing all the raw materials uniformly.

[0041]Wherein, the preparation method of hyperbranched polyglycerol acrylate comprises: mixing 300g hyperbranched polyglycerol with a molecular weight of 3000, 1335g methyl acrylate and 6.23g tetrabutyl titanate, refluxing at 100° C., fractionating methanol through a rectifying column, After 6 hours of reaction, excess methyl acrylate was distilled off to obtain hyperbranched polyglycerol acrylate, wherein the saponification value of hyperbranched polyglycerol acrylate was 112....

Embodiment 3

[0043] This embodiment provides a light-curing coating, the raw materials of which include 15kg of hyperbranched polyglycerol acrylate, 25kg of urethane acrylate, 20kg of polyethylene glycol 400 diacrylate, 23kg of ethoxylated trimethylolpropane triacrylate, 7kg 1-hydroxycyclohexylacetophenone, 0.5kg defoamer and 0.5kg leveling agent.

[0044] The preparation method of the above-mentioned light-curing coating includes: obtaining the light-curing coating after mixing all the raw materials uniformly.

[0045] Wherein, the preparation method of hyperbranched polyglycerol acrylate comprises: mixing 200g hyperbranched polyglycerol with a molecular weight of 4000, 670g methyl acrylate and 3.5g triethylamine, refluxing at 100°C, fractionating methanol through a rectifying column, and reacting for 6h Then, excess methyl acrylate is distilled off to obtain hyperbranched polyglycerol acrylate, wherein the saponification value of hyperbranched polyglycerol acrylate is 90.9 mg / g.

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Abstract

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. The raw materials of the coating include 5-20 parts of hyperbranched polyglycerin fatty acid ester, 10-50 parts of polyurethane acrylate, 10-50 parts of reactive diluent, 0.5-8 parts of photoinitiator and 0.1-2 parts of auxiliary agent. The invention does not need to introduce corrosive sulfonic acid, carboxylic acid and other groups when improving the hydrophilicity of the coating. The hyperbranched polyglycerol fatty acid ester contains a large number of ether bonds and has good flexibility. The synergistic effect with urethane acrylate can improve the hydrophilicity, adhesion and bending resistance of the coating. The hyperbranched polyglycerol fatty acid ester with a saponification value of 50-300 mg / g improves the hydrophilic effect of the coating without affecting other properties of the coating.

Description

technical field [0001] The invention belongs to the technical field of coating preparation, and particularly relates to a light-curing coating and a preparation method and application thereof. Background technique [0002] UV-curable coatings have received more and more attention in recent years due to their high efficiency, energy saving, economy and environmental friendliness, and have been used in wood, ink, plastics, adhesives, electronic component packaging materials, food packaging, magazine covers, A wide range of applications have been made in fields such as medical devices and the automotive 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 the photoinitiator caused by radiation, generating reactive free radicals and further triggering the reactive diluent / oligomer to polymerize and crosslink. [0003] With the continuous development of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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