Double metal cyanide catalysts for producing polyether polyols

US6586566B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jörg Hofmann · Krefeld, DE
• Pieter Ooms · Krefeld, DE
• Pramod Gupta · Bedburg, DE
• Walter Schafer · Leichlingen, DE
• John Lohrenz · Leverkusen, DE

Key dates

• Filing date: Aug 8, 2001
• Grant date: Jul 1, 2003
• Expiry date: Aug 8, 2021

Classification

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

Abstract

This invention relates to novel double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds having active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c) and c) ionic surface- or interface-active compounds. The catalysts according to the invention have greatly increased activity in the production of polyether polyols.