Stain Resistant Matte Elastomeric Coatings

An elastic coating, matte technology, applied in the coating and other directions, can solve the problems of affecting the wall decoration effect, poor stain resistance, poor flatness, etc., achieve instant recovery of self-cleaning, reduce gloss, and solve high temperature sticking back Effect

Active Publication Date: 2016-08-17
ASIA PAINT SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the coatings used for exterior walls of buildings, elastic coatings can effectively resist wall cracks due to their excellent elongation and "instant recovery" elasticity, so the choice of elastic coatings as exterior wall paints is gradually being favored by people However, the stain resistance of conventional elastic coatings is poor. Generally, the higher the elasticity, the worse the stain resistance, and the higher the temperature, the worse the stain resistance. However, the balance point between elasticity and stain resistance cannot be found in the current related technologies. In order to make the coating not only have the advantages of crack resistance of elastic coatings, but also have the characteristics of stain resistance that conflict with it; secondly, due to the poor flatness of the wall during the construction of the exterior wall, the gloss of conventional elastic coatings High degree, which leads to obvious unevenness of the wall, affecting the decorative effect of the wall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] First add 10 parts of water, start the mixer, increase the speed to 500rpm, then slowly add the following raw materials into the water: 0.4 part of dispersant (Dow 963), 0.3 part of bactericide (CI15), antifungal agent (Dow M8) 0.3 parts, 0.3 parts of defoamer (BK BYK-028), 0.2 parts of wetting agent (BK WET270), stir for 3 minutes;

[0072] Then slowly add the following raw materials in the state of stirring: 18 parts of rutile titanium dioxide, 8 parts of superfine talc powder, 8 parts of calcined kaolin, 1.2 parts of anti-fouling agent, 5 parts of water. Disperse at high speed for 30-40 minutes;

[0073] Then place the dispersed slurry in a suitable mixing tank, adjust the rotating speed to 300-600rpm, and gradually add the following raw materials slowly: 0.8 parts of antifreeze, 3.4 parts of film-forming aid (Eastman Texanol), hydroxyethyl cellulose 5 parts of plain powder, 40 parts of self-crosslinking pure acrylic elastic emulsion, 0.4 part of multifunctional add...

Embodiment 2

[0075] First add 10 parts of water, start the mixer, increase the speed to 500rpm, then slowly add the following raw materials: 0.3 part of dispersant (Dow 963), 0.4 part of bactericide (CI15), 0.3 part of antifungal agent (Dow M8), Defoamer (German BYK BYK-028) 0.35 parts, wetting agent (German BYK WET270) 0.3 parts, stir for 3 minutes;

[0076] Then slowly add the following raw materials in the state of stirring: 15 parts of rutile titanium dioxide, 9 parts of superfine talc powder, 10 parts of calcined kaolin, 1.5 parts of anti-fouling agent, 3 parts of water. Disperse at high speed for 30-40 minutes;

[0077] Then place the dispersed slurry in a suitable mixing tank, adjust the rotating speed to 300-600rpm, and gradually add the following raw materials slowly: 1.2 parts of antifreeze, 5 parts of film-forming aid (Eastman Texanol), hydroxyethyl cellulose 8 parts of plain powder, 45 parts of self-crosslinking pure acrylic elastic emulsion, 0.2 part of multifunctional additi...

Embodiment 3

[0079] First add 9 parts of water, start the mixer, increase the rotating speed to 500rpm, then slowly add the following raw materials: 0.5 part of dispersant (Dow 963), 0.4 part of bactericide (CI15), 0.4 part of antifungal agent (Dow M8), 0.4 part of defoamer (BYK-028, Germany), 0.4 part of wetting agent (BYK WET270, Germany), and stir for 3 minutes;

[0080] Then slowly add the following raw materials under stirring: 20 parts of rutile titanium dioxide, 10 parts of superfine talc powder, 9 parts of calcined kaolin, 0.8 parts of anti-fouling agent, 3 parts of water. Disperse at high speed for 30-40 minutes;

[0081] Then place the dispersed slurry in a suitable mixing tank, adjust the speed to 300-600rpm, and gradually add the following raw materials slowly: 1.0 parts of antifreeze, 4 parts of film-forming aid (Eastman Texanol), hydroxyethyl cellulose 10 parts of plain powder, 42 parts of self-crosslinking pure acrylic elastic emulsion, 0.4 part of multi-functional additive...

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Abstract

The invention provides a stain-resistant matte elastic paint. The stain-resistant matte elastic paint comprises the following components in parts by weight: 10-15 parts of water, 0.2-0.5 part of wetting agent, 0.3-0.5 part of modified dispersant, 15-20 parts of titanium dioxide powder, 8-10 parts of talc powder, 8-10 parts of kaolin, 40-45 parts of a pure acrylic elastic emulsion, 3-5 parts of an environment-friendly additive, 3-3.5 parts of a coalescent agent, 0.3-0.4 part of a defoamer, 0.4-0.8 part of a thickener and 5-10 parts of lignin, wherein the environment-friendly additive comprises a stain resisting agent. The stain-resistant matte elastic paint provided by the invention is reasonably matched and combined according to the respective property characteristics of the materials. The paint film is presented into a core-shell structure with soft interior and hard exterior due to the application of an active balancing technology and the combination of the functions of active particles and the elastic emulsion, so that the paint film simultaneously has the properties of high-temperature after-tack resistance, stain resistance and crack resistance.

Description

technical field [0001] The invention relates to the field of coatings, more specifically, to a stain-resistant matte elastic coating. Background technique [0002] At present, in the coatings used for exterior walls of buildings, elastic coatings can effectively resist wall cracks due to their excellent elongation and "instant recovery" elasticity, so the choice of elastic coatings as exterior wall paints is gradually being favored by people However, the stain resistance of conventional elastic coatings is poor. Generally, the higher the elasticity, the worse the stain resistance, and the higher the temperature, the worse the stain resistance. However, the balance point between elasticity and stain resistance cannot be found in the current related technologies. In order to make the coating not only have the advantages of crack resistance of elastic coatings, but also have the characteristics of stain resistance that conflict with it; secondly, due to the poor flatness of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D7/12
CPCC08K2003/2241
Inventor 徐志新余先明王永桑莹莹李金钟
Owner ASIA PAINT SHANGHAI
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