Process for the preparation of polyether polyols

US6492565B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Uwe Denninger · Bensberg, DE
• Jörg Hofmann · Krefeld, DE
• Pramod Gupta · Bedburg, DE

Key dates

• Filing date: Apr 6, 2001
• Grant date: Dec 10, 2002
• Expiry date: Jun 12, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2231/48
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of polyether polyols by the reaction of alkylene oxides and compounds containing active hydrogens, in the presence of specific Lewis acid metal compounds as catalysts, novel bis(perfluoroalkylsulfonic acid) compounds of Group 13 of the Periodic Table of the Elements, and to a process for the preparation thereof and the use thereof as catalysts for ring-opening polymerization of cyclic ethers.