Patent · US Active

Reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid

US11111201B2 · kind B2 · utility

1Cited by

4References

16Claims

0Family size

Assignee

SOLVAY SA · BE

Inventors

Jean-Marie Blaude · Brussels, BE
Benoit Gosselin · Henry County 156, CA
Alain Lambert · Beauvechain, BE
Matthias Marek · Offenau, DE
Harald Krueger · Bad Wimpfen, DE
Jan Schostag · Bad Rappenau, DE
Miriam Heyd · Bad Rappenau, DE

Key dates

Filing date	Apr 25, 2018
Grant date	Sep 7, 2021
Priority date	—
Expiry date	Apr 25, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C53/18
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.

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