Patent · US Expired

Process for converting maleic anhydride to .gamma.-butyrolactone

US4006165A · kind A · utility

15Cited by

2References

9Claims

0Family size

Assignee

Deutsche Texaco Aktiengesellschaft · DE

Inventors

Georg Michalczyk
Karl-Heinz Gluzek · Alpen, DE

Key dates

Filing date	Aug 4, 1975
Grant date	Feb 1, 1977
Priority date	—
Expiry date	Aug 4, 1995

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J23/8993
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for converting maleic anhydride to .gamma.-butyrolactone by treating the anhydride with hydrogen in the presence of co-catalysts comprising palladium and nickel-copper chromite at elevated pressures and temperatures.

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