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:
Feb. 08, 2022
Filed:
Jun. 15, 2018
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/37 (2006.01); D21H 17/42 (2006.01); D21H 17/28 (2006.01); D21H 17/44 (2006.01); D21H 17/56 (2006.01); D21H 23/04 (2006.01);
U.S. Cl.
CPC ...
D21H 17/37 (2013.01); D21H 17/42 (2013.01); D21H 17/28 (2013.01); D21H 17/44 (2013.01); D21H 17/56 (2013.01); D21H 23/04 (2013.01);
Abstract
A strength additive system for manufacturing paper, board, tissue or the like includes preferably as separate components, a cationic strength agent, such as a cationic polymer with aldehyde functional groups, and an anionic copolymer obtained by polymerization of a reaction mixture including (meth)acrylamide and anionic monomers, the standard viscosity of the obtained copolymer being in a range of 1.5-5.0 mPas. A method for manufacturing of a paper, board, tissue or the like is further disclosed.