Patent · US Expired

Preparation of polyoxyalkylene glycol monoethers of monohydric alcohols

US5414143A · kind A · utility

8Cited by

5References

8Claims

0Family size

Assignee

BASF SE

Inventors

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

Key dates

Filing date	Mar 2, 1993
Grant date	May 9, 1995
Priority date	—
Expiry date	Mar 2, 2013

Classification

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

Abstract

Polyoxyalkylene glycol monoethers of monohydric alcohols are prepared by a process in which tetrahydrofuran or a mixture of tetrahydrofuran with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals is polymerised in the absence of water and in the presence of a monohydric alcohol and of an anhydrous heteropoly acid catalyst.

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