Preparation and use of 3, (4)-substituted pyrrolidines as catalysts for the polyisocyanate polyaddition process

US5274114A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Richard Weider · Leverkusen, DE
• Uwe Scholz · Hanerau-Hademarschen, DE
• Andreas Ruckes · Leverkusen, DE

Key dates

• Filing date: Feb 10, 1992
• Grant date: Dec 28, 1993
• Expiry date: Feb 10, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0025
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to the preparation of 3- and/or 4-substituted pyrrolidine catalysts corresponding to formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, X.sub.1, X.sub.2, and Y have the meanings described for formula (I) and to use of such catalysts in the polyisocyanate polyaddition process.