Pigment preparations

US4909853A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Martin Wienkenhover · Leverkusen, DE
• Volker Paulat · Monheim, DE
• Wolfgang Karnath · Langenfeld, DE
• Hans Schulze · Cologne, DE
• Karlheinz Wolf · Leverkusen, DE
• Karl-Heinz Wieser · Leverkusen, DE

Key dates

• Filing date: Mar 1, 1988
• Grant date: Mar 20, 1990
• Expiry date: Mar 1, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Pigment preparations which contain an organic pigment and/or carbon black and a surfactant from the sulphosuccinic acid ester and/or alkylbenzenesulphonate series and which have been dried, if appropriate after wet comminution, by spray- or freeze-drying from an aqueous medium, and the use of these preparations for pigmenting high molecular weight organic material, in particular thermoplastics.