Process for the production of optionally cellular polyurethanes and/or polyurethane ureas

US5616628A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wulf von Bonin · Leverkusen, DE
• Hanns P. Muller · Leverkusen, DE
• Manfred Kapps · Bensberg, DE

Key dates

• Filing date: Mar 13, 1996
• Grant date: Apr 1, 1997
• Expiry date: Mar 13, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2350/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyurethanes and/or polyurethane ureas which are optionally cellular are produced by the process of the present invention. This process consists of reacting at least one polyisocyanate with a specific reaction mixture. This reaction mixture contains PA1 A) non-basic compounds having a molecular weight of 62 to 10,000 and containing at least two hydroxyl groups; and PA1 B) at least one component selected from: PA2 B)1) basic polyhydroxyl compounds and PA2 B)2) acids or the salts thereof; and PA1 C) at least one component selected from: PA2 C)1) fatty acids and PA2 C)2) the salts of the fatty acids. The reaction occurs at temperatures of from 0.degree. to 150.degree. C., and component A) is used as an at least 50 wt. % aqueous solution.