Process for the preparation of polyether carbonate polyols

US9045592B2 · kind B2 · utility

Assignee

• Bayer Intellectual Property GmbH · DE

Inventors

• Christoph Gürtler · Cologne, DE
• Jörg Hofmann · Krefeld, DE
• Aurel Wolf · Wülfrath, DE
• Stefan Grasser · Leverkusen, DE

Key dates

• Filing date: Sep 6, 2011
• Grant date: Jun 2, 2015
• Expiry date: Dec 31, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/2663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of polyether carbonate polyols from one or more alkylene oxides, carbon dioxide and optionally from one or more H-functional starter substances in the presence of at least one double metal cyanide catalyst, wherein the double metal cyanide catalyst comprises an unsaturated alcohol as a complexing ligand.