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Water-based hydroxyl acrylic dispersion and method for preparing same

A hydroxyacrylic acid and dispersion technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as environmental pollution, and achieve the effects of high gloss, good weather resistance and improved fullness

Active Publication Date: 2018-03-16
武汉双键新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When doing solution polymerization, more or less 100 # Solvent oil, propylene glycol butyl ether, diethylene glycol butyl ether, propylene glycol methyl ether acetate and other organic solvents, these organic solvents will volatilize in the air during coating construction, causing certain pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment provides a water-based hydroxyacrylic acid dispersion, the formula is as follows: polyol 35g, hydroxyl-containing (meth)acrylate 60g, hydroxyl-free (meth)acrylate 220g, vinyl monomer 25g, ( Meth)acrylic acid 8g, initiator A 2g, initiator B 0.7g, salt forming agent 8g, deionized water 430g, defoamer 0.2g.

Embodiment 2

[0030] This embodiment provides the preparation method of the aqueous hydroxyacrylic acid dispersion described in embodiment 1, the steps are as follows:

[0031] 1) 8g of acrylic acid, 20g of butyl acrylate, 24g of methyl methacrylate, 12g of hydroxyethyl methacrylate, and 2g of dicumyl peroxide were mixed in advance for about 20 minutes to obtain the mixed liquid I;

[0032] 2) 35g of butyl acrylate, 40g of methyl methacrylate, 25g of styrene, 13g of 2-ethylhexyl acrylate, 63g of butyl methacrylate, 25g of cyclohexyl methacrylate, 25g of hydroxyethyl methacrylate 48g of ester, stirred and mixed for about 20min to obtain mixed solution II;

[0033] 3) Add 35 g of polypropylene glycol (number average molecular weight 500) into a four-necked flask, put it in a constant temperature oil bath, and set the oil temperature to 130-135°C; 1.5-2h after the dropwise addition is completed, the material temperature is controlled at 130-135°C, and after the dropwise addition is completed,...

Embodiment 3

[0038] The present embodiment provides a water-based hydroxyacrylic acid dispersion, and the formula is as follows: 45 g of polyols, 70 g of hydroxyl-containing (meth)acrylates, 230 g of hydroxyl-free (meth)acrylates, 30 g of vinyl monomers, ( Meth)acrylic acid 7g, initiator A 1g, initiator B 0.5g, salt forming agent 10g, deionized water 450g, defoamer 0.1g.

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PUM

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Abstract

The invention relates to water-based hydroxyl acrylic dispersion and a method for preparing the same. The water-based hydroxyl acrylic dispersion comprises, by weight, 35-45 parts of polyol, 60-70 parts of (methyl) acrylate with hydroxyl, 210-230 parts of (methyl) acrylate without hydroxyl, 20-30 parts of vinyl monomers, 7-10 parts of (methyl) acrylic acid, 1-3 parts of initiators A, 0.5-1 part ofinitiators B, 8-10 parts of salt forming agents, 430-450 parts of deionized water and 0.1-0.3 part of defoaming agents. The water-based hydroxyl acrylic dispersion and the method have the advantagesthat hydroxyl provided by the polyol and isocyanate curing agents are used with one another, accordingly, cross-linked and cured paint films are good in adhesion, weather resistance, water resistanceand chemical resistance and high in glossiness and hardness, and the like.

Description

technical field [0001] The invention relates to a water-based hydroxyacrylic acid dispersion and a preparation method, belonging to the technical field of industrial coatings. Background technique [0002] Waterborne hydroxyacrylic acid secondary dispersion has been greatly developed in recent years, and its position in the field of industrial coatings is becoming more and more important. Since the hydroxyl group and isocyanate curing agent in the water-based hydroxyacrylic dispersion can be cross-linked and cured, the water-based two-component coating has high gloss, high hardness, good weather resistance, good scratch resistance and acid resistance after film formation. Good alkalinity and other advantages, so it is widely used in wood paint, metal paint, plastic paint, glass paint and other industries. [0003] Most of the waterborne hydroxyacrylic secondary dispersions currently on the market are acrylic resins obtained by solution polymerization, and then dispersed in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/20C08F220/06C08F212/08C08F220/44C08F218/08C08G18/62C08G18/48C08G18/44C09D175/08C09D175/04
CPCC08F220/14C08F220/18C08F220/1804C08G18/4063C08G18/44C08G18/4825C08G18/6254C08G18/6262C09D175/04C09D175/08C08F220/20C08F220/06C08F212/08C08F220/1808C08F220/1806C08F220/44C08F218/08
Inventor 高州马世凯刘志鸿许为主游仁国雷木生
Owner 武汉双键新材料股份有限公司
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