Patent · US Expired

Preparation of polyoxyalkylene glycol monoesters of monocarboxylic acids

US5659068A · kind A · utility

3Cited by

5References

23Claims

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	May 31, 1994
Grant date	Aug 19, 1997
Priority date	—
Expiry date	May 31, 2014

Classification

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

Abstract

Polyoxyalkylene glycol monoesters of carboxylic acids 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 polymerized in the absence of water and in the presence of a carboxylic acid and of an anhydrous heteropolyacid catalyst.

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