Water-soluble anionic acrylic resin composition for extinction and preparation method thereof

An anionic acrylic acid and resin composition technology, applied in the direction of coating, can solve the problems of poor acid resistance, alkali resistance, poor covering, affecting the storage stability of the coating, difficult to disperse evenly, etc., to achieve controllable gloss, good matting effect, and storage. good stability

Active Publication Date: 2013-05-22
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most water-based matting coatings use physical matting agents, such as matting powder, wax powder, stearate, etc. Most of them have poor matting effects, are not easy to disperse evenly, and affect the storage stability of the coating. Defects such as alkalinity and poor hiding

Method used

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  • Water-soluble anionic acrylic resin composition for extinction and preparation method thereof
  • Water-soluble anionic acrylic resin composition for extinction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A water-soluble anionic acrylic resin composition for matting and a preparation method thereof, comprising the following steps:

[0042](1) Preparation of organosilicon-modified silica dispersion: mix ethyl orthosilicate: ethanol: water in a ratio of 4:15:1, heat up to 50°C, and adjust the pH of the system with 0.1mol / L hydrochloric acid To 3, maintain the temperature and continue the reaction for 8h under the condition of mechanical stirring, that is, SiO 2 Alcohol sol, prepared in SiO 2 Add 3.0 g of vinyltriethoxysilane to the alcohol sol, condense and reflux for 2 hours under the condition of heating in a water bath at 75° C., and cool to obtain a silicone-modified silica dispersion.

[0043] (2) 5 parts by mass of hydroxyethyl methacrylate, 8 parts by mass of methyl methacrylate, 6 parts by mass of butyl methacrylate, 5 parts by mass of methacrylic acid, 12 parts by mass of butyl acrylate, 6 parts by mass of benzene Ethylene monomers are mixed evenly and set aside...

Embodiment 2

[0047] (1) The preparation method of the organosilicon-modified silica dispersion is the same as step (1) of Example 1.

[0048] (2) Mix 6 parts by mass of hydroxyethyl methacrylate, 7 parts by mass of methyl methacrylate, 8 parts by mass of butyl methacrylate, 6 parts by mass of methacrylic acid, 15 parts by mass of butyl acrylate, and 7 parts by mass of benzene Ethylene monomers are mixed evenly and set aside;

[0049] (3) Under the protection of nitrogen, dissolve 1.103 parts by mass of sodium lauryl sulfate and 0.368 parts by mass of polyoxyethylene-8-octylphenyl ether compound emulsifier in 115 parts by mass of deionized water, and then add In a four-necked round-bottomed flask with a stirrer, a thermometer and a separating funnel, add 12.25 parts by mass of the acrylate monomer mixture of step (2), 1.4 parts by mass of a 5% (mass fraction) initiator potassium persulfate solution, During rapid stirring, the temperature was raised to 80°C, and after 1 hour of reaction, th...

Embodiment 3

[0052] (1) Preparation of organosilicon-modified silica dispersion: mix ethyl orthosilicate: ethanol: water in a ratio of 3:12:2, heat up to 75°C, and adjust with hydrochloric acid (0.1mol / L) The pH of the system is 4, and the temperature is maintained under the condition of mechanical stirring for 12 hours to obtain SiO 2 Alcohol sol, prepared in SiO 2 Add 4.8 g of vinyltriethoxysilane to the alcohol sol, condense and reflux for 3 hours under the condition of heating in a water bath at 80° C., and cool to obtain a silicone-modified silica dispersion.

[0053] (2) 10 parts by mass of hydroxyethyl methacrylate, 18 parts by mass of methyl methacrylate, 13 parts by mass of butyl methacrylate, 12 parts by mass of methacrylic acid, 30 parts by mass of butyl acrylate, 12 parts by mass of benzene Ethylene monomers are mixed evenly and set aside;

[0054] (3) Under the protection of nitrogen, dissolve 2.138 parts by mass of sodium lauryl sulfate and 0.712 parts by mass of polyoxyeth...

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Abstract

The invention discloses a water-soluble anionic acrylic resin composition for extinction and a preparation method thereof. The eater-soluble anionic acrylic resin composition for extinction is composed of 140-316 parts by mass of water-dispersible ethylene copolymer resin and 30-65 parts by mass of organosilicon-modified silicon dioxide dispersion solution, wherein the water-dispersible acrylate copolymer is prepared by carrying out emulsion polymerization on hydroxy acrylate unsaturated monomer, carboxyl acrylate unsaturated monomer and other free-radical polymerizable unsaturated acrylate monomers; and the organosilicon-modified silicon dioxide dispersion solution is prepared by the following steps: carrying out acid-catalyzed hydrolysis reaction on ethyl orthosilicate in an ethanol-water solution to obtain silicon dioxide low polymer, and reacting with a silane coupling agent. By regulating the preparation process and consumption of the organosilicon-modified silicon dioxide dispersion solution, the invention can effectively control the luster of the water-soluble anionic acrylic resin, and enhances the compatibility between the anionic acrylic resin and the silicon dioxide dispersion solution.

Description

technical field [0001] The invention belongs to the field of water-based matting coatings, in particular to a water-soluble anionic acrylic resin composition for matting and a preparation method thereof. Background technique [0002] In recent years, water-based matting coatings have been widely demanded, but most of these matting coatings are made by adding matting agents or matting powders. As a water-based matting coating of this preparation method, for example, a method of dispersing a silica matting agent in a self-crosslinking acrylic resin (CN101186773A); a water-based one-component matting type in which a matting agent is added to an acrylic-modified polyurethane system Clear finish paint (CN102363702); Add matting agent to polyacrylic acid polyol to form component A, and then mix component A and component B anion-modified HDI polyisocyanate in proportion to make water-based two-component matting clear Topcoat (CN 102363696 A); method of adding matting powder to wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/08C08K9/06C08K3/36C08F220/18C08F220/28C08F220/14C08F220/06C08F212/08C08F2/24C09D133/08C09D7/12
Inventor 庞浩区菊花张敏
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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