Method for producing polytetrahydrofuran

US6455711B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Karsten Eller · Stockach, DE
• Michael Hesse · Westlake Village, US
• Rainer Becker · Bad Dürkheim, DE
• Arthur Hohn · Tauberbischofsheim, DE
• Heinz Rutter · Hochdorf-Assenheim, DE

Key dates

• Filing date: Feb 29, 2000
• Grant date: Sep 24, 2002
• Expiry date: Feb 29, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/2657
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers or diesters or monoesters of these polymers comprises polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer over a heterogeneous catalyst comprising hectorite.