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:
Apr. 06, 2004
Filed:
Nov. 21, 2001
Applicant:
Inventors:
Jan Matthijs Jetten, Zeist, NL;
Ronald Van Den Dool, Culemborg, NL;
Wim Van Hartingsveldt, Amersfoort, NL;
Arie Cornelis Besemer, Amerongen, NL;
Assignee:
SCA Hygiene Products Zeist B.V., Zeist, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 1/500 ; C08B 1/504 ; C08B 1/104 ; C08B 1/108 ; C08B 1/112 ;
U.S. Cl.
CPC ...
C08B 1/500 ; C08B 1/504 ; C08B 1/104 ; C08B 1/108 ; C08B 1/112 ;
Abstract
A process for oxidizing cellulose, in which a nitroxyl compound such as TEMPO is oxidized using an oxidizing agent in the presence of a complex of a transition metal such as Mn, Fe, Cu, and a complexing agent such as a polyamine, or an oxidative enzyme, and the resulting nitrosonium ion is used to selectively oxidize cellulose 6-hydroxy-methylene groups to carbaldehyde groups and carboxylic acid groups.