Process for preparing polyether polyols

US9156761B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Kerstin Wiss · Mannheim, DE
• Sirus Zarbakhsh · Ludwigshafen, DE
• Achim Loeffler · Puming, CN
• Peter Deglmann · Ludwigshafen, DE
• Michael Limbach · Worms, DE
• Ronald Lindner · Dossenheim, DE
• Severine Lavy · Heidelberg, DE
• Michael Lejkowski · Neckargemünd, DE

Key dates

• Filing date: Mar 26, 2013
• Grant date: Oct 13, 2015
• Expiry date: Oct 10, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/03
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing polyetherols by catalytic ring-opening polymerization, wherein at least one nitrogen-containing cyclic precatalyst compound is used.