Method for producing tetrahydrofurane copolymers

US7094933B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Haubner · Ludwigshafen am Rhein, DE
• Rolf Pinkos · Bad Dürkheim, DE
• Alexander Weck · Freinsheim, DE

Key dates

• Filing date: Jul 30, 2003
• Grant date: Aug 22, 2006
• Expiry date: Dec 2, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.