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:
Nov. 25, 2014
Filed:
Nov. 01, 2012
Applicant:
Hercules Incorporated, Wilmington, DE (US);
Inventor:
Sachin Borkar, Wilmington, DE (US);
Assignee:
Solenis Technologies, L.P., , CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 222/38 (2006.01); C08F 212/08 (2006.01); D21H 17/35 (2006.01); C08F 226/02 (2006.01); D21H 17/36 (2006.01); D21H 17/37 (2006.01); D21H 17/55 (2006.01); D21H 17/56 (2006.01);
U.S. Cl.
CPC ...
C08F 226/02 (2013.01); D21H 17/35 (2013.01); D21H 17/36 (2013.01); D21H 17/37 (2013.01); D21H 17/55 (2013.01); D21H 17/56 (2013.01); C08F 212/08 (2013.01);
Abstract
Surfactant mediated, free radical initiated emulsion/dispersion polymerization of n-vinylformamide with styrene or substituted styrene copolymers, and its subsequently hydrolyzed products bearing formamide, amine and styrenic functionality are disclosed. Processes for polymerization, polymer composition, and hydrolysis of such polymers are also disclosed. These polymers bearing cationic functionality can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, sizing agent, sizing promoter and pitch and stickies control agents.