Polyurethane foam and process for production

US6326412A · kind A · utility

Assignee

• Otto Bock Schaumsysteme GmbH & Co. KG · DE

Inventors

• Hans Weber · Glückstadt, DE
• Peter Gansen · Selters (Westerwald), DE

Key dates

• Filing date: Nov 3, 2000
• Grant date: Dec 4, 2001
• Expiry date: Nov 3, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0083
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a polyurethane foam and associated production process, in particular a polyurethane integral foam and associated production process, whereby a carbamate or a mixture of carbamates is used simultaneously as propellant and as catalyst, and the carbamate or the carbamates have the general Formula I: ##STR1## wherein: PA1 R.sub.1 and R.sub.2 represent the same or different alkyl radicals, PA1 R.sub.3 and R.sub.4 represent the same or different radicals and denote hydrogen or alkyl radicals, PA1 R.sub.5 denotes hydrogen, an alkanol radical, a polyether monool radical or the radical PA1 characterized by X, PA1 n represents 2 or 3.