Patent · US Expired

Process for the preparation of carbonic acid esters

US4370275A · kind A · utility

13Cited by

2References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gunter Stammann · Cologne, DE
Robert Becker · Warsaw, US
Johann Grolig · Leverkusen, DE
Helmut Waldmann · Leverkusen, DE

Key dates

Filing date	Apr 2, 1981
Grant date	Jan 25, 1983
Priority date	—
Expiry date	Apr 2, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2531/16
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a process for the preparation of carbonic acid esters with high selectivity and under reaction conditions which permit high space/time yields, said process being one in which an alcohol is allowed to react with a mixture of molecular oxygen and carbon monoxide in the liquid phase in the presence of a catalyst system containing copper, chemically bonded oxygen, chemically bonded halogen and at least one nitrogen base.

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