Dihydroxyfatty acids as structural elements for polyurethanes

US5512655A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wolfgang Klauck · Meerbusch, DE
• Peter Daute · Beverstedt, DE

Key dates

• Filing date: Dec 7, 1993
• Grant date: Apr 30, 1996
• Expiry date: Dec 7, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/348
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of carboxyfunctional polyurethane from dihydroxyfatty acids and/or dihydroxypolyfatty acids as isocyanate-reactive compounds bearing an ionizable group is provided. The dihydroxycarboxylic acids and/or dihydroxypolyfatty acids have no shielding molecular group near the carboxy group, more particularly not in the alpha-position to the carboxy group, and thus give particularly good results when used as a structural element for the production of polyurethanes. Also provided are polyurethanes and aqueous polyurethane dispersions produced using the dihydroxyfatty acids.