Preparation of polyether glycols

US5561217A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans-Juergen Weyer · Mannheim, DE
• Rolf Fischer · Heidelberg, DE
• Rolf Pinkos · Bad Dürkheim, DE

Key dates

• Filing date: Apr 24, 1995
• Grant date: Oct 1, 1996
• Expiry date: Apr 24, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/321
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of polyoxyalkylene glycols or polyoxyalkylene glycol copolymers from polyoxyalkylene glycol formates or the formates of polyoxyalkylene glycol copolymers comprises reacting the formates of polyoxyalkylene glycols or of polyoxyalkylene glycol copolymers in the liquid phase in the presence of a heterogeneous catalyst which contains, as catalytically active component, rhenium and/or at least one element from sub-group VIII of the Periodic Table of the Elements.