Patent · US Active

Continuous process for decarboxylating carboxylic acids

US7485756B2 · kind B2 · utility

3Cited by

0References

20Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Marianne Omeis · Dorsten, DE
Guenther Koehler · Marl, DE
Manfred Neumann · Marl, DE
Thomas Kuebelbaeck · Ulmen, DE

Key dates

Filing date	Dec 20, 2007
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Dec 20, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C209/68
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A continuous process for decarboxylating carboxylic acids proceeds by I.) initially charging a carbonyl compound as a catalyst in a solvent at reaction temperature, to obtain a catalyst solution; II.) metering a carboxylic acid into the catalyst solution as an aqueous solution, aqueous suspension or as a water-comprising solid, to obtain a reaction mixture; and III.) continuously removing a mixture of CO2, solvent, water and a reaction product or mixture of reaction products from the reaction mixture as a vapor.

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