Hydrophobic phthalo cyanine green water color paste

Abstract

The present invention relates to a kind of water-thinned hydrophobic phthalocyanine green color paste suitable for hydrophobic outer wall emulsion paint. The water-thinned hydrophobic phthalocyanine green color paste consists of phthalocyanine green color 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 0.1-0.2 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 toning water-based building latex paint, in particular to a phthalocyanine green water-based color paste 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, organic red, organic yellow, etc. . Although there are many types of green pigments, because phthalocyanine green pigments have excellent acid and alkali resistance, weather resistance, solvent resistance, and moderate price, phthalocyanine green pigments are generally used as green pastes in water-based colorants. Moreover, there are many professional color paste manufacturers at home and abroad that can produce this kind of phthalocyanine...

AI Technical Summary

Problems solved by technology

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 Therefore, almost all phthalocyanine green pastes on the market are hydrophilic color pastes, and these hydrophilic color pastes have always been used very well in hydrophilic latex paints

[0003] In recent years, with the gradual development of exterior building latex paints in the direction of hydrophobicity, the base paints are required to be more and more hydrophobic. At this time, if hydrophilic phthalocyanine green paste is used in such base paints, floating Toning problems such as discoloration and fading, which seriously affect the performance of hydrophobic paints

In order to improve the compatibility of colorants with hydrophobic latex paints and optimize the toning performance, various companies began to study hydrophobic colorants, but because hydrophobic substances are often difficult to maintain long-term stability in water-based systems, hydrophobic Non-volatile colorants are prone to problems such as water separation, precipitation, and coloring power decline, which affect their use in exterior wall architectural latex paints