Double metal cyanide catalysts for producing polyether polyols

US6919293B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Pieter Ooms · Krefeld, DE
• Jörg Hofmann · Krefeld, DE
• Christian Steinlein · Ratingen, DE
• Stephan Ehlers · West Chester, US

Key dates

• Filing date: Oct 26, 2000
• Grant date: Jul 19, 2005
• Expiry date: Oct 10, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/96
• WIPO field: Chemical engineering
• 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 compound comprising active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c) and c) two or more complex-forming components from the classes of compounds comprising functionalised polymers, glycidyl ethers, glycosides, carboxylic acid esters of polyhydric alcohols, bile acids or the salts, esters or amides thereof, cyclodextrins, phosphorus compounds, α,β-unsaturated carboxylic acid esters or ionic surface- or interface-active compounds. The catalysts according to the invention exhibit greatly increased activity in polyether polyol production.