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:
Jul. 24, 2007
Filed:
Apr. 23, 2003
Applicants:
A. Levent Cimedoglu, Princeton, NJ (US);
John S. Thomaides, Berkeley Heights, NJ (US);
Inventors:
A. Levent Cimedoglu, Princeton, NJ (US);
John S. Thomaides, Berkeley Heights, NJ (US);
Assignee:
National Starch and Chemical Investment Holding Corporation, New Castle, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 1/00 (2006.01); C08B 11/00 (2006.01); C08B 11/08 (2006.01); C08B 31/04 (2006.01); C08B 31/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
Polysaccharide aldehydes are prepared using selective oxidation involving the use of nitroxyl radical mediated aqueous oxidation with a limited amount of oxidant and defined reaction conditions. These polysaccharide aldehyde derivatives having maximum effective aldehyde and minimal carboxylic acid levels making them especially useful as wet, temporary wet and dry strength additives for paper.