The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2016
Filed:
Jan. 14, 2015
Applicant:
Sofradim Production, Trévoux, FR;
Inventors:
Sebastien Francois, Jassans-Riottier, FR;
Sebastien Ladet, Caluire & Cuire, FR;
Muriel Guerin, Anse, FR;
Assignee:
Sofradim Production, Trevoux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B 37/08 (2006.01); C07H 1/08 (2006.01);
U.S. Cl.
CPC ...
C08B 37/003 (2013.01); C07H 1/08 (2013.01);
Abstract
The present invention relates to a method for the preparation of chitosan of a degree of acetylation DA, from chitosan β having a degree of acetylation DAlower than DA, comprising at least one step of purification and at least one step of acetylation of said chitosan β, said purification step comprising at least one step of solubilization of said chitosan β in an acidic aqueous medium and at least one step of precipitation of said thus solubilized chitosan,