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:
Jan. 08, 2019
Filed:
Sep. 24, 2015
Applicant:
Kemira Oyj, Helsinki, FI;
Inventor:
Sacha Legrand, Oulu, FI;
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 226/02 (2006.01); C08F 8/12 (2006.01); C08K 5/20 (2006.01); D21H 17/38 (2006.01); D21H 17/45 (2006.01); D21H 21/10 (2006.01); D21H 21/20 (2006.01); C08F 271/00 (2006.01); D21H 17/34 (2006.01);
U.S. Cl.
CPC ...
C08F 8/12 (2013.01); C08F 226/02 (2013.01); C08F 271/00 (2013.01); C08K 5/20 (2013.01); D21H 17/34 (2013.01); D21H 17/38 (2013.01); D21H 17/45 (2013.01); D21H 21/10 (2013.01); D21H 21/20 (2013.01);
Abstract
The present invention relates to a method for producing a cationic polyvinyl amine based copolymer. The present invention further relates to a cationic polyvinyl amine based copolymer and use of the copolymer in paper industry as a strength agent, a retention agent and a drainage agent.