Polyurethane-based thickeners

US5500475A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Ulrich Eicken · Korschenbroich, DE
• Herbert Fischer · Goldkronach, DE
• Wolfgang Gress · Wuppertal, DE
• Rainer Hoefer · Goldkronach, DE
• Doris Oberkobusch · Goldkronach, DE
• Ludwig Schieferstein · Ratingen, DE

Key dates

• Filing date: May 10, 1994
• Grant date: Mar 19, 1996
• Expiry date: May 10, 2014

Classification

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

Abstract

Provided are thickeners based on an aqueous preparation of nonionic, water-dispersible or water-soluble polyurethanes, to their production and to their use. The nonionic, water-dispersible or water-soluble polyurethanes are obtainable by reaction of polyfunctional isocyanates with polyether polyols, monohydric alcohols and, if desired, polyhydric alcohols, wherein the monohydric alcohols contain at least one other polar group. Also provided is a process for the production of such thickeners. The thickeners are particularly suitable for thickening emulsion paints.