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. 27, 2013
Filed:
Jan. 29, 2010
Applicants:
Jonathan M. Mckay, Wilmington, DE (US);
Qu-ming Gu, Bear, DE (US);
Richard J. Riehle, Wilmington, DE (US);
Inventors:
Jonathan M. McKay, Wilmington, DE (US);
Qu-Ming Gu, Bear, DE (US);
Richard J. Riehle, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H 17/33 (2006.01); D21H 17/44 (2006.01); D21H 21/10 (2006.01); D21H 21/18 (2006.01); D21H 23/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Vinylamine-containing polymers are disclosed where the amine groups are substituted with cationic functional groups. Processes for preparing such polymers, as well as compositions comprising such polymers are also disclosed. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.