Method for preparing polyether polyols

US6441247B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Georg Heinrich Grosch · Bad Dürkheim, DE
• Harald Larbig · Ludwigshafen, DE
• Reinhard Lorenz · Schifferstadt, DE
• Dieter Junge · Bischofswerda, DE
• Kathrin Harre · Dresden, DE

Key dates

• Filing date: Jul 26, 2001
• Grant date: Aug 27, 2002
• Expiry date: Jul 26, 2021

Classification

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

Abstract

The present invention relates to a process for the preparation of polyether polyols by catalytic reaction of H-functional initiators with lower alkylene oxides, wherein the catalysts used are multimetal cyanide compounds and the H-functional initiators used are butane-1,4-diol, &agr;-hydroxy-&ohgr;-hydroxypoly(oxybutane-1,4-diyl), pentane-1,5-diol, decane-1,10-diol or mixtures of at least two of these compounds.