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Radiation-cured water-based coating resin, and preparation method thereof

A water-based coating, radiation curing technology, used in polyurea/polyurethane coatings, coatings, etc., can solve problems such as strong volatility, strong irritating odor, and damage to coating performance

Active Publication Date: 2017-06-16
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong volatility of tertiary amine neutralizers and strong pungent odor, there are residues in the coating, which may damage the performance of the coating, or may migrate during the use of the coating. In some application fields such as Packaging coating etc. have a certain influence
[0009] In the free radical polymerization radiation curing system, the inhibition effect of oxygen is serious, and the inhibition of oxygen on free radical polymerization often leads to the curing of the lower layer of the coating, but the surface is still uncured and sticky, thus prolonging the curing time, reducing production efficiency, and damaging Cured Coating Properties

Method used

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  • Radiation-cured water-based coating resin, and preparation method thereof
  • Radiation-cured water-based coating resin, and preparation method thereof
  • Radiation-cured water-based coating resin, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Preparation of D-I

[0084] Add 320 parts (parts by weight, the same below) of trimethylolpropane triacrylate into the flask, control the reaction to stir at 30-40 degrees, and gradually add 105 parts of diethanolamine to it, and react until no detection in the system -NH- When the reaction is over, the structure compound DI containing hydroxyl, acrylate and tertiary amine is obtained, the structural formula is

Embodiment 2

[0086] Preparation of D-II

[0087] Add 254 parts of glycerol triacrylate to the flask, control the reaction to stir at 30-40 degrees, and gradually add 75 parts of N-methylethanolamine to it, and react until the reaction ends when no NH is detected in the system. Compound D-II containing hydroxyl, acrylate group and tertiary amine structure at the same time

Embodiment 3

[0089] Preparation of D-III

[0090] Add 300 parts of pentaerythritol triacrylate to the flask, control the reaction to stir at 30-40 degrees, and gradually add 75 parts of N-methylethanolamine to it. The reaction is completed until no NH is detected in the system, and the reaction is obtained. Hydroxyl, acrylate and tertiary amine structure compound D-III, structural formula

[0091]

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Abstract

The invention relates to a radiation-cured water-based coating resin, and a preparation method thereof. The radiation-cured water-based coating resin comprises water dispersible polyurethane acrylate and an optionally selected polyfunctional acrylate. In emulsification dispersion of the radiation-cured water-based coating resin, neutralization of the acid hydrophilic functional groups of the water dispersible polyurethane acrylate is realized via taking amino-acrylate as a neutralizer, so that the stability of pH value of viscosity of obtained resin and coating can be maintained at a relatively high storage temperature; the neutralizer takes part in curing reaction in coating curing, so that volatilization and residual of the neutralizer are avoided; the main chain structure of the polyurethane acrylate contains a tertiary amine structure, oxygen inhibition effect in curing process is eliminated because of the existence of the tertiary amine structure in the main structure and the amino-acrylate neutralizer, double bond conversion rate and curing construction speed are increased, and coating performance is improved.

Description

Technical field [0001] The invention relates to a water-based coating resin, in particular to a radiation-curable water-based coating resin and a preparation method thereof. Background technique [0002] Since the photocurable coating resin contains carbon-carbon double bonds such as acrylate oligomers, when UV light irradiates the photocurable coating, the photoinitiator in the coating is excited to generate free radicals, and the free radicals further form the double bond in the coating resin The chain polymerization reaction forms a growing chain, this reaction continues to extend, and the double bond-containing substance is cross-linked to form a film. [0003] In order to reduce the coating viscosity, traditional light-curing coatings usually add a low-viscosity acrylate diluent or organic solvent to the reactive UV light-curing resin (oligomer). The use of diluents or organic solvents leads to the use of UV coatings. It brings a lot of pollution and irritation, and there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C08G18/67C08G18/66C08G18/42
CPCC08G18/4238C08G18/6692C08G18/673C08G18/675C08L2205/02C09D175/14C08L75/04
Inventor 王洪武任率祖孙伟祖邓俊英
Owner WANHUA CHEM GRP CO LTD
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