Novel hydroxy acrylic acid dispersion and application thereof

A technology of hydroxyacrylic acid and dispersion, applied in the field of materials, can solve the problems of gloss, fullness defects, high solvent content, poor water resistance, etc., and achieve the effects of narrow particle size distribution, simple preparation process, and excellent water resistance

Active Publication Date: 2018-06-22
江苏天问新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional hydroxyacrylic acid dispersions prepared from acrylate monomers have relatively high solvent content, low solid content, high viscosity, and relatively poor wat

Method used

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  • Novel hydroxy acrylic acid dispersion and application thereof
  • Novel hydroxy acrylic acid dispersion and application thereof
  • Novel hydroxy acrylic acid dispersion and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] (1) Mix 2g of propylene oxide, 3.0g of butylene glycol, 2g of propylene glycol methyl ether acetate, 0.02g of potassium hydroxide, and 2.0g of unsaturated polyester, heat up to 140-145°C, stir and react for 0.5-1h to obtain a reaction mixture;

[0021] (2) To the reaction mixture obtained in step (1), 0.5 g of di-tert-butyl peroxide, 5 g of methyl acrylate, 6 g of methyl methacrylate, and 4 g of butyl acrylate were added dropwise to the reaction mixture obtained in step (1). Continue to add dropwise the remaining 0.5g of di-tert-butyl peroxide, 5g of methyl acrylate, 6g of methyl methacrylate, and 4g of butyl acrylate. After the addition is complete, keep it warm for 1-2h, then cool to 75-80℃, add 4g of N,N dimethylethanolamine was neutralized, and an appropriate amount of deionized water was added to stir and disperse for 1-2 hours, and then the material was discharged to obtain the polyether polyol-unsaturated polyester modified hydroxy acrylic dispersi...

Example Embodiment

[0022] Example 2

[0023] (1) Mix 3g of epichlorohydrin, 5.0g of propylene glycol, 3g of propylene glycol methyl ether acetate, 0.03g of potassium hydroxide, and 3.0g of unsaturated polyester, heat up to 140-145°C, stir and react for 0.5-1h to obtain a reaction mixture ;

[0024] (2) Add 1.0 g of dibenzoyl peroxide, 8 g of methyl acrylate, 2 g of methyl methacrylate, 5 g of hydroxyethyl methacrylate, and 5 g of ethyl acrylate to the reaction mixture obtained in step (1). After holding for 1 hour, continue to add the remaining 1.0 g of dibenzoyl peroxide and 8 g of methyl acrylate, 2 g of methyl methacrylate, 5 g of hydroxyethyl methacrylate, and 5 g of ethyl acrylate. After the addition, keep holding for 1-2 hours After that, the temperature was lowered to 75-80°C, 6g of triethylamine was added to neutralize, and an appropriate amount of deionized water was added to stir and disperse for 1-2 hours, and then the material was discharged to obtain the polyether polyol-unsaturated pol...

Example Embodiment

[0025] Example 3

[0026] (1) Mix 2.37g of propylene oxide, 3.66g of butanediol, 3g of propylene glycol methyl ether acetate, 0.02g of potassium hydroxide, and 2.21g of unsaturated polyester, heat up to 140-145°C, stir and react for 0.5-1h to obtain Reaction mixture

[0027] (2) To the reaction mixture obtained in step (1), 0.56 g of di-tert-butyl peroxide and acrylic ester monomers (methyl acrylate, methyl methacrylate, and butyl acrylate in a mass ratio of 1: 1:1) 18.0g, after the dripping is completed, after holding for 1h, continue to drip the remaining di-tert-butyl peroxide 0.56g and acrylic monomers (methyl acrylate, methyl methacrylate, butyl acrylate) The mass ratio is 1:1:1) 18.0g, after the dripping is completed, keep for 1-2h, then cool to 75-80℃, add 5.4g of N,N dimethylethanolamine for neutralization, add appropriate amount of deionized water and stir to disperse After 1-2 hours, the material is discharged to obtain the polyether polyol-unsaturated polyester modifie...

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Abstract

The invention relates to a novel hydroxy acrylic acid dispersion and application thereof. The novel hydroxy acrylic acid dispersion provided by the invention is a polyether glycol-unsaturated polyester modified hydroxy acrylic acid dispersion, wherein the solid content is 54+/-1.0%, the viscosity is 2100+/-50mpa.s, the hydroxyl value is 5.2+/-0.1, and the VOC content is 26+/-4.0mu g/g. The novel hydroxy acrylic acid dispersion provided by the invention has the characteristics of high solid content, high hydroxyl value, low viscosity, good prepared paint fullness, gloss and water resistance andthe like, is hopefully applied to the field of paint preparation, and can be widely used for replacing the traditional hydroxy acrylic acid dispersion.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a novel hydroxyacrylic acid dispersion and its application. Background technique [0002] Water-based two-component polyurethane is mainly formed by curing and cross-linking the hydroxyl functional groups in the water-based hydroxyacrylic dispersion and the water-based polyisocyanate curing agent. Water-based two-component polyurethane has the advantages of high gloss, color retention and good weather resistance. With the development of economy and society, the diversification of the market and the increasingly stringent environmental requirements, the amount of solvent-based resins has been increasingly controlled. Water-based resins Because of its obvious advantages such as low VOC content, it is more and more favored by consumers and the market. Traditional hydroxyacrylic acid dispersions prepared from acrylate monomers have relatively high solvent content, low solid cont...

Claims

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Application Information

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IPC IPC(8): C08F291/06C08F220/14C08F220/18C08F220/20C09D175/04
CPCC08F283/01C08F283/06C09D175/04C08F220/1804
Inventor 王元有徐洁周培舒适陈锁金周国强金党琴黄昊宇
Owner 江苏天问新材料科技有限公司
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