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:
Jun. 25, 2002
Filed:
Apr. 26, 2000
Applicant:
Inventor:
Helmut Brehm, Krefeld, DE;
Assignee:
Stockhausen GmbH & Co. KG, Krefeld, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/50 ; C08F 2/46 ;
U.S. Cl.
CPC ...
C08F 2/50 ; C08F 2/46 ;
Abstract
A process for producing water-soluble, cationic polyelectrolytes is described, wherein the polymerization of the water-soluble monomers is initiated at low temperatures using a combination of UV light, photoinitiator and a redox system, and is characterized in that the redox system is capable of initiating the polymerization only at temperatures higher than or equal to 20° C. The polymers have a high molecular weight and a low content of residual monomer.