Polyether polyols, process for preparing polyether polyols and their use for producing polyurethanes

US9115246B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Andreas Kunst · Ludwigshafen, DE
• Berend Eling · Ludwigshafen, DE
• Achim Loeffler · Puming, CN
• Heinz-Dieter Lutter · Diepholz, DE
• Wei Han · Hsinchu, TW
• Jens Mueller · Löhne, DE

Key dates

• Filing date: Apr 22, 2011
• Grant date: Aug 25, 2015
• Expiry date: Mar 10, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0008
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing polyether polyols, in which at least one hydroxyl-comprising fatty acid ester and/or at least one hydroxyl-modified fatty acid ester is reacted with the aid of a double metal cyanide catalyst in at least two process sections with in each case a mixture of ethylene oxide and at least one further alkylene oxide different from ethylene oxide.