Process for the preparation of polyether polyols

US7772330B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Klaus Lorenz · Worms, DE
• Jörg Hofmann · Krefeld, DE

Key dates

• Filing date: Jan 26, 2010
• Grant date: Aug 10, 2010
• Expiry date: Jan 26, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S521/914
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides a process for conditioning double metal cyanide (DMC) catalysts, which are employed in the preparation of polyether polyols based on starter compounds having active hydrogen atoms, the preparation of polyether polyols using the conditioned catalysts and the use of the polyether polyols prepared in this way for the preparation of polyurethane materials.