Patent · US Active

Process for the manufacture of carboxylic anhydride

US10106485B2 · kind B2 · utility

0Cited by

2References

17Claims

0Family size

Assignee

RHODIA ACETOW GMBH · DE

Inventors

Thomas Krumrey · Teningen, DE
Andreas Hummel · Glückstadt, DE
Dirk Hölter · Emmendingen, DE

Key dates

Filing date	Dec 1, 2015
Grant date	Oct 23, 2018
Priority date	—
Expiry date	Dec 1, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB27K2240/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention concerns a process for manufacturing a fraction comprising carboxylic acid anhydride by reaction of a fraction comprising carboxylic acid with a ketene, and the use of the fraction comprising carboxylic acid anhydride in a process for acylation of polysaccharides.

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