Patent · US Expired

Method of separating .gamma.-butyrolactone from mixtures containing diethyl succinate

US5030328A · kind A · utility

4Cited by

3References

1Claims

0Family size

Assignee

BASF SE

Inventors

Rolf Fischer · Heidelberg, DE
Peter Stops · Altrip, DE
Erwin Brunner · Meiningen, DE
Rudolf Weigand · Zeven, DE

Key dates

Filing date	Nov 5, 1990
Grant date	Jul 9, 1991
Priority date	—
Expiry date	Nov 5, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S203/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A method of separating .gamma.-butyrolactone from a mixture containing ethanol, tetrahydrofuran, water, n-butanol, 1,4-butanediol, diethyl succinate and .gamma.-butyrolactone, by distillation in vacuum columns.

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