Patent · US Expired

Process for the preparation of polyether glycols

US5099074A · kind A · utility

29Cited by

6References

9Claims

0Family size

Assignee

BASF SE

Inventors

Herbert Mueller · Herznach, CH
Gerhard Jeschek · Havelsee, DE
Rolf Fischer · Heidelberg, DE
Hans-Juergen Weyer · Mannheim, DE

Key dates

Filing date	Oct 26, 1990
Grant date	Mar 24, 1992
Priority date	—
Expiry date	Oct 26, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G65/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for the preparation of polyether glycols by polymerization of tetrahydrofuran or copolymerization of tetrahydrofuran with oxiranes in the presence of from 20 to 500% w/w of a hydrocarbon, based on the weight of tetrahydrofuran used.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.