Polyurethane thickener compositions and their use for thickening aqueous systems

US5378756A · kind A · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• Gebr. Borchers AG · DE

Inventors

• Uwe Thies · Goslar, DE
• Michael Griesbach · Tettnang, DE
• Jurgen Schwindt · Leverkusen, DE
• Jan Mazanek · Cologne, DE

Key dates

• Filing date: Mar 22, 1994
• Grant date: Jan 3, 1995
• Expiry date: Mar 22, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is directed to a thickener composition for thickening aqueous systems which contains a mixture of PA1 a) a water-soluble or water-dispersible thickener containing urethane groups, PA1 b) a non-ionic emulsifier and PA1 c) a compound corresponding to the formula ##STR1## wherein R.sub.1 and R.sub.3 may be the same or different and represent hydrocarbon radicals and PA1 R.sub.2 and R.sub.4 may be the same of different and represent hydrogen or hydrocarbon radicals, PA1 Q represents alkylene oxide units obtained by the alkoxylation of alcohols with alkylene oxides having 2 to 4 carbon atoms, and PA1 n represents a number from 0 to 120. The invention also relates to the use of this thickener composition as a thickener for aqueous systems.