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:
Jan. 17, 2023
Filed:
Dec. 21, 2015
Applicant:
Upm-kymmene Corporation, Helsinki, FI;
Inventor:
Isko Kajanto, Espoo, FI;
Assignee:
UPM-KYMMENE CORPORATION, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 15/04 (2006.01); A61K 8/02 (2006.01); A61K 8/73 (2006.01); A61K 9/70 (2006.01); A61K 47/38 (2006.01); A61Q 19/00 (2006.01); D01F 2/24 (2006.01); D21H 11/18 (2006.01); D21H 11/20 (2006.01);
U.S. Cl.
CPC ...
C08B 15/04 (2013.01); A61K 8/027 (2013.01); A61K 8/731 (2013.01); A61K 9/70 (2013.01); A61K 47/38 (2013.01); A61Q 19/00 (2013.01); D01F 2/24 (2013.01); D21H 11/18 (2013.01); D21H 11/20 (2013.01); A61K 2800/10 (2013.01);
Abstract
A process for producing an oxidized nanofibrillar cellulose hydrogel is disclosed, wherein the process comprises oxidizing cellulose pulp fibers in the presence of hypochlorite as an oxidant and a heterocyclic nitroxyl radical as a catalyst; and disintegrating the oxidized cellulose pulp fibers to obtain a nanofibrillar cellulose hydrogel; wherein all steps of the process after oxidizing are performed under aseptic conditions. An oxidized nanofibrillar cellulose hydrogel and a system for producing the same are also disclosed.