Process for preparing pigment compositions

US4226634A · kind A · utility

Assignee

• BASF Farben Fasern Aktiengesellschaft · DE

Inventors

• Peter Dimroth · Ludwigshafen, DE
• Helmut Knittel · Ludwigsburg, DE
• August Seitz · Besigheim, DE
• Dietrich Wolff · Stuttgart, DE

Key dates

• Filing date: Jan 23, 1979
• Grant date: Oct 7, 1980
• Expiry date: Jan 23, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/60
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Pigment compositions including nickel titanium yellow or chromium titanium yellow as an inorganic component together with an organic pigment component impart better gloss and/or hiding power to organic coatings containing 10% or more of the compositions if the compositions are prepared by subjecting a suspension of the components in a liquid medium to intense shearing stresses and thereafter separating the mixed pigments from the medium.