Patent · US Active

Acylation process

US10889654B2 · kind B2 · utility

0Cited by

2References

24Claims

0Family size

Assignee

SOLVAY ACETOW GmbH · DE

Inventors

Andreas Hummel · Glückstadt, DE
Hans-Juergen Ehret · Glückstadt, DE

Key dates

Filing date	Oct 8, 2014
Grant date	Jan 12, 2021
Priority date	—
Expiry date	Oct 8, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2103/28
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention concerns a process for the manufacture of an acylated polysaccharide which comprises. (a) reacting a polysaccharide with an acylating agent to produce an acylated polysaccharide and (b) washing the acylated polysaccharide with water containing from 0.05 to 15 mg/l Ca2+-ions (c) recovering the washed acylated polysaccharide and an aqueous phase containing carboxylic acid from step (b).

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