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Preparation method of polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion

A technology of polyether polyol and hydroxy acrylic acid, applied in the field of materials, can solve the problems of gloss, fullness defect, high solvent content, poor water resistance, etc., and achieves the effect of narrow particle size distribution range, simple preparation process and excellent water resistance

Active Publication Date: 2018-05-22
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 water resistance. In addition, traditional water-based hydroxyacrylic acid dispersions have Relatively low, resulting in a certain degree of defects in its luster and fullness

Method used

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  • Preparation method of polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion
  • Preparation method of polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion
  • Preparation method of polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0021] (2) Add dropwise di-tert-butyl peroxide 0.5g and methyl acrylate 5g, methyl methacrylate 6g, butyl acrylate 4g in the reaction mixture that step (1) obtains, after the dropwise addition is completed and incubated for 1h, 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. , N dimethylethanolamine 4g to neutralize, add an appropriate amount of deionized water to stir and disperse for 1-2h, and then discharge to obtain the polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion (hereinafter referred to as product A).

Embodiment 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, and stir for 0.5-1h to obtain a reaction mixture ;

[0024] (2) add dibenzoyl peroxide 1.0g and methyl acrylate 8g, methyl methacrylate 2g, hydroxyethyl methacrylate 5g, ethyl acrylate 5g in the reaction mixture that step (1) obtains, add After keeping warm for 1 hour, continue to add the remaining 1.0g of dibenzoyl peroxide, 8g of methyl acrylate, 2g of methyl methacrylate, 5g of hydroxyethyl methacrylate, and 5g of ethyl acrylate, and keep warm for 1-2 hours after adding Afterwards, lower the temperature to 75-80oC, add 6g of triethylamine to neutralize, add an appropriate amount of deionized water to stir and disperse for 1-2 hours, and discharge the material to obtain the polyether polyol-unsaturated polyester modified hydroxyacrylic acid Dispersion (hereinafter referred to as pr...

Embodiment 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, and stir for 0.5-1h to obtain reaction mixture;

[0027] (2) in the reaction mixture that step (1) obtains, drop di-tert-butyl peroxide 0.56g and acrylate monomer (the mass ratio of methyl acrylate, methyl methacrylate, butyl acrylate is 1: 1:1) 18.0g, after the dropwise addition is completed and kept warm for 1h, continue to add dropwise the remaining di-tert-butyl peroxide 0.56g and acrylate monomers (methyl acrylate, methyl methacrylate, butyl acrylate) The mass ratio is 1:1:1) 18.0g, after the dropwise addition, keep warm for 1-2h, then cool down to 75-80 o C, add 5.4g of N,N dimethylethanolamine to neutralize, add an appropriate amount of deionized water to stir and disperse for 1-2h, and discharge the material to obtain the polyether polyol-unsaturated polyester modified hydroxy...

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Abstract

The invention relates to a preparation method of a polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion. The preparation method comprises the following steps: (1) mixing organicepoxide, a compound containing activated hydrogen groups, a solvent, a catalyst and unsaturated polyester, rising the temperature to 140 to 145 DEG C, and stirring and reacting for 0.5 to 1 hour, thus obtaining a reaction mixture; (2) dropwise adding an initiator and an acrylate monomer in the reaction mixture obtained in step (1) by two steps, keeping warm for 1 to 2 hours after completing dropwise adding, cooling to 75 to 80 DEG C, adding a neutralizer, adding deionized water, and stirring and dispersing for 1 to 2 hours, thus obtaining the polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of polyether polyol-unsaturated polyester modified hydroxyl acrylic acid dispersion. 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 r...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F283/01C08F220/14C08F220/18C08F220/20C08G65/28C09D151/08
CPCC09D151/08C08F283/01C08F283/06C08G65/2609C08F220/18C08F220/1804C08F220/1802
Inventor 舒适王元有徐洁周培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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