Dispersing of pigments

US4226637A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Heinrich Linden · Hilden, DE
• Jochen Heidrich · Monheim, DE
• Bernd Wegemund · Haan, DE
• Hans Bornmann · Düsseldorf, DE

Key dates

• Filing date: Nov 20, 1978
• Grant date: Oct 7, 1980
• Expiry date: Nov 20, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/84
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dispersion adjuvants are described comprising .beta.-hydroxyalkyl esters of the formula ##STR1## wherein the R.sub.1 and R.sub.2 represent hydrogen or alkyl with 1 to 21 carbon atoms, in which at least one of R.sub.1 and R.sub.2 is alkyl and the sum of the carbon atoms in R.sub.1 and R.sub.2 ranges from 6 to 22, and wherein R.sub.3 represents alkyl with 1 to 8 carbon atoms, optionally substituted with 1 to 2 hydroxyl groups and/or interrupted by 1 to 2 ether bridges, as well as the adducts of compounds of Formula I with alkylene oxides, preferably ethylene oxide and/or propylene oxide. The dispersion adjuvants are coated on pigment and filler materials for paints and lacquers. The coating is applied before or during the dispersion of the materials in the paint or lacquer media or vehicle.