Method for producing polyetherols by ring-opening polymerisation of alkylene oxides

US6548714B1 · 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: Jan 24, 2001
• Grant date: Apr 15, 2003
• Expiry date: Jan 24, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/269
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing polyetherols by ring-opening polymerization of alkylene oxides onto H-functional initiator molecules comprises at least one process step a) in which a compound of the formula (I)M′aM″b(OH)cOd* Ae*Lf  (I),is applied to a solid inert support or incorporated in the latter or molded to form a shaped body is used as catalyst,and at least one process step b) in which a multimetal cyanide compound of the formula (II)M1a[M2(CN)b(A)c]d·fM1gXn·h(H20) eL  (II)is applied to a solid, inert support or incorporated in the latter or molded to form a shaped body or in powder or paste form is used as catalyst.