Latex coating containing no volatile organic compounds and preparation method thereof

An organic compound, volatile technology, applied in latex paint, coating, etc., can solve problems such as air pollution and harm to the body, achieve the effects of eliminating silt, good environmental performance, and preventing the growth of fungi and algae

Inactive Publication Date: 2005-11-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current latex paint is mainly composed of water, film-forming substances, pigments and fillers, dispersants, thickeners and other related additives, among which the organic additives contain more or less a certain amount of VOC

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the first step, at room temperature, 15.2 parts of water, 0.6 parts of dispersant (BEVALOID270 polyacrylate), 0.4 parts of thickener (QP4400H), 0.3 parts of defoamer (BEVALOID 681F ) mixing, under the condition of rotating speed 190rpm, disperse evenly at a slow speed, then add pigments (18 parts of anatase titanium dioxide, 7 parts of rutile titanium dioxide), fillers (8 parts of calcined kaolin, 12 parts of heavy calcium powder, the particle size is 1000 mesh), under the condition of rotating speed 800rpm, disperse at high speed for 35 minutes, when the fineness of the color paste is below 45 μm, make the color paste;

[0019] The second step is to reduce the rotational speed, and add 37.9 parts of film-forming substances to the color paste (prepared by core-shell emulsion polymerization technology, internal plasticizer graft modification technology and micronization technology, which has a higher glass transition temperature and a higher glass transition temperatur...

Embodiment 2

[0021] In the first step, at room temperature, 26.7 parts of water, 0.5 parts of dispersant (LOPON885 polyacrylate), 0.6 part of thickener (ER50M), 0.3 part of defoamer (BEVALOID 642 ) mixing, under the condition of rotating speed 150rpm, disperse evenly at a slow speed, then add pigments (8 parts of anatase titanium dioxide, 4 parts of rutile titanium dioxide), fillers (8 parts of calcined kaolin, 10 parts of heavy calcium powder, 18 parts Talcum powder, particle size is 800 mesh), under the condition of rotating speed 1200rpm, disperse at high speed for 35 minutes, when the fineness of color paste is below 45 μ m, make color paste;

[0022] The second step is to reduce the rotation speed, add 23.2 parts of film-forming substances (HG-8 pure acrylic emulsion) to the color paste, and disperse evenly at a medium speed under the condition of a rotation speed of 300rpm, and then add 0.3 parts of defoamer (BEVALOID 642), 0.4 parts of other additives (rheology additive Fungitrol 82...

Embodiment 3

[0024] In the first step, at room temperature, add 10 parts of water, 0.2 parts of dispersant (0.1 part of BEVALOID226 polyacrylate, 0.1 part of LOPON890 polyacrylate), and 0.2 parts of thickener (QP15000H) , 0.1 parts of antifoaming agent (BEVALOID 691), mixed at a speed of 100rpm, dispersed evenly at a slow speed, then added 5 parts of pigment (anatase titanium dioxide), 10 parts of filler (5 parts of kaolin, 5 parts of heavy calcium powder , the particle size is 1250 mesh), under the condition of rotating speed 1500rpm, disperse at high speed for 30 minutes, when the fineness of the color paste is below 45 μm, make the color paste;

[0025] The second step is to reduce the rotation speed, add 15 parts of film-forming substance (HG-8 pure acrylic emulsion) to the color paste, and disperse evenly at a medium speed under the condition of a rotation speed of 400rpm, and then add 0.1 parts of defoamer (BEVALOID 642), 0.2 parts of other additives (rheological additive Fungitrol 7...

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Abstract

The invention relates to a latex paint with no volatile organic compound and the method for preparation, which is built-up with the following component by weigh share, 10-40 shares of water, 0.2-1.0 shares of disperser, 0.2-1.0 shares of thickener, 0.2-1.0 shares of defoamer, 5-30 shares of colourant, 10-50 shares of packing, 15-30 shares of film forming material, 0.2-0.8 shares of other adjuvant. Mixing adequately said component and then filtering, it can be prepared. No need of adding film forming adjuvant, antifreeze compound and solvent, the prepared latex paint solves the problem of film forming in a low temperature and cold stability of paint, and it contains no VOC, environmental protection property good, durable against pollutions, scouring resistance strong, water-proof, dust-proof and fungus-proof property nice, and air permeability good. The preparation technology in the invention is simple and cost low, and it is easy to carry out and spread.

Description

technical field [0001] The invention relates to the technical field of latex paint, in particular to a latex paint without volatile organic compounds and a preparation method thereof. Background technique [0002] In the paint industry, due to the large amount of volatile organic compounds (VOC) contained in the paint, it has attracted the attention of the whole society. According to statistics, the world emits about 20 million tons of hydrocarbons into the atmosphere every year, including 10 million tons of organic solvents, most of which are produced by the paint industry. These substances seriously endanger the environment in which human beings live. Since the 1960s, some developed countries have imposed strict restrictions on the evaporation of solvents during coating. In recent years, with the development of the economy, people's awareness of environmental protection and health has been continuously improved, especially for the wall decoration m...

Claims

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Application Information

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IPC IPC(8): C09D133/02
Inventor 张心亚黄洪蓝仁华陈焕钦
Owner SOUTH CHINA UNIV OF TECH
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