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:
Aug. 09, 2016
Filed:
Jun. 08, 2012
Applicants:
Tapani Vuorinen, Espoo, FI;
Timo Pääkkönen, Helsinki, FI;
Markus Nuopponen, Helsinki, FI;
Inventors:
Assignee:
UPM-KYMMENE CORPORATION, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B 15/02 (2006.01); D21C 3/00 (2006.01); D21C 9/00 (2006.01); C08B 15/04 (2006.01);
U.S. Cl.
CPC ...
D21C 3/003 (2013.01); C08B 15/04 (2013.01); D21C 9/002 (2013.01); D21C 9/007 (2013.01);
Abstract
In a method for catalytic oxidation of cellulose a heterocyclic nitroxyl radical is used as catalyst, hypochlorite is used as main oxidant acting as oxygen source, and a tertiary amine or chlorine dioxide as an activator of the heterocyclic nitroxyl radical.