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. 30, 2005
Filed:
Dec. 13, 2001
Applicants:
Petter Bragd, Göteborg, SE;
Arie Cornelis Besemer, Amerongen, NL;
Inventors:
Petter Bragd, Göteborg, SE;
Arie Cornelis Besemer, Amerongen, NL;
Assignee:
SCA Hygiene Products Zeist B.V., Zeist, NL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07G017/00 ; C07H001/00 ; C07H003/00 ; C08B037/00 ;
U.S. Cl.
CPC ...
Abstract
Primary hydroxyl groups in a substrate having both primary and secondary hydroxyl groups can be selectively oxidized to carbaldehyde and/or carboxyl groups by contacting the substrate with a cyclic nitroxyl compound in the presence of a peroxosulfate as a co-oxidant and by carrying out the reaction at a temperature below 30° C. and at a pH below 9. The process is halogen-free and metal-free and is especially suitable for oxidizing polysaccharides.