Patent · US Active

Method for deacetylation of biopolymers

US11254792B2 · kind B2 · utility

2Cited by

4References

13Claims

0Family size

Assignee

Galderma Holding SA · CH

Inventors

Johan Olsson · Bromma, SE
Craig Steven Harris · Biot, FR

Key dates

Filing date	Dec 28, 2016
Grant date	Feb 22, 2022
Priority date	—
Expiry date	Dec 28, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2305/08
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A method for at least partial deacetylation of a biopolymer comprising acetyl groups, including: a1) providing a biopolymer including acetyl groups; a2) reacting the biopolymer including acetyl groups with hydroxylamine (NH2OH) or a salt thereof at a temperature of 100° C. or less for 2-200 hours to form an at least partially deacetylated biopolymer; and a3) recovering the at least partially deacetylated biopolymer.

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