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. 17, 2007
Filed:
Aug. 12, 2003
Applicant:
Zhiqiang Song, Newton, CT (US);
Inventor:
Zhiqiang Song, Newton, CT (US);
Assignee:
Ciba Specialty Chemicals Water Treatments Ltd., Bradford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 214/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-soluble cationic polymers.