Hydrophobic carbon black water color paste

Abstract

The present invention relates to water-thinned color paste, and is especially a kind of hydrophobic water-thinned carbon black color paste for coloring outer wall emulsion. The color paste consists of carbon black pigment 30-50 wt%, co-solvent 8-10 wt%, dispersant component I 15-20 wt%, dispersant component II 3-5 wt%, defoaming agent component I 0.2-0.3 wt%, defoaming agent component II 0.3-0.5 wt%, pH regulator 0.1-0.3 wt%, preservative 0.2-0.3 wt%, and solvent 20-60 wt%. The addition of the hydrophobic dispersant and other assistants makes the color paste well dispersed in water in maintaining stable pigment grains and improved color paste performance.

Description

【Technical field】 [0001] The invention relates to a water-based color paste for water-based building latex paint, in particular to a carbon black water-based color paste suitable for hydrophobic exterior wall building latex paint. 【Background technique】 [0002] At present, people have begun to use water-based color paste in large quantities in latex paint toning. The pigments used include inorganic pigments and organic pigments: inorganic pigments include iron oxide red, iron yellow, etc.; organic pigments include, phthalocyanine blue, carbon black, Organic red, organic yellow, etc., black pigments generally use carbon black. However, since the coatings used in interior and exterior wall buildings in the past few years are mainly hydrophilic coatings, and hydrophilic color pastes are easier to achieve good opening state and storage stability in water-based systems, the research difficulty is relatively low . [0003] In recent years, with the gradual development of exteri...

AI Technical Summary

Problems solved by technology

However, if the pigment content is too high, there is a risk of flocculation and dilution back to coarse during mixing