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. 05, 2008
Filed:
Apr. 20, 2004
Applicants:
Zhiqiang Song, Newton, CT (US);
Philip Anson Ford, Suffolk, VA (US);
Inventors:
Zhiqiang Song, Newton, CT (US);
Philip Anson Ford, Suffolk, VA (US);
Assignee:
Ciba Specialty Chemicals Water Treatments Ltd., West Yorkshire, Bradford, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H 21/02 (2006.01); D21H 17/33 (2006.01); C08F 136/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water soluble radical initiator at reaction temperature with agitation for chain extension and crosslinking.