Process for preparing polyether carbonate polyols

US8324419B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Darijo Mijolovic · Mannheim, DE
• Markus Kummeter · Heddesheim, DE
• Michael Stoesser · Schifferstadt, DE
• Stephan Bauer · Ostercappeln, DE
• Stephan Goettke · Bakum, DE

Key dates

• Filing date: Jan 21, 2008
• Grant date: Dec 4, 2012
• Expiry date: Nov 12, 2029

Classification

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

Abstract

The invention relates to a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substances using DMC catalysts, wherein one or more starter substances are initially placed in the reactor and one or more starter substances are metered continuously into the reactor during the reaction.