Preparation of cellular polyurethane elastomers using polyether carbonate diols as a starting component

US5173518A · kind A · utility

Assignee

• BASF SE

Inventors

• Kaspar Bott · Mannheim, DE
• Horst King · Schifferstadt, DE
• Claudia Spang · Eisenberg, DE
• Roland Minges · Havelsee, DE
• Wolfgang Straehle · Heidelberg, DE

Key dates

• Filing date: Jan 6, 1992
• Grant date: Dec 22, 1992
• Expiry date: Jan 6, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0066
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of cellular polyurethane elastomers involves reacting PA1 a) an organic and/or modified organic polyisocyanate with PA1 b) a polyether polycarbonate diol which contains bonded polyoxytetramethylene glycol radicals having a mean molecular weight Mn (number average) of from 150 to 500, and, if desired, PA1 c) a low-molecular-weight chain extender and/or crosslinking agent, in the presence of PA1 d) a blowing agent, PA1 e) a catalyst and PA1 f) if desired additives and/or assistants.