Dispersants for preparing aqueous pigment pastes

US6235813A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Petra Brandt · Duisburg, DE
• Eberhard Esselborn · Essen, DE
• Hans-Leo Karminski · Essen, DE
• Arno Knebelkamp · Essen, DE
• Christian Psiorz · Essen, DE
• Stefan Silber · Krefeld, DE
• Ellen Wallhorn · Essen, DE

Key dates

• Filing date: Aug 9, 1999
• Grant date: May 22, 2001
• Expiry date: Aug 9, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/009
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to block-polymethacrylate-block-polyalkylene oxide copolymers with terminal carboxylic acids, of the general formula I ##STR1## and to their use as a dispersing additive in aqueous pigment preparations and as a compatibilizer in SMC or BMC formulations.