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. 03, 2025
Filed:
Dec. 18, 2020
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Matti Hietaniemi, Espoo, FI;
Asko Karppi, Espoo, FI;
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/45 (2006.01); D21H 11/02 (2006.01); D21H 11/14 (2006.01); D21H 17/28 (2006.01); D21H 21/10 (2006.01); D21H 21/18 (2006.01);
U.S. Cl.
CPC ...
D21H 17/455 (2013.01); D21H 11/02 (2013.01); D21H 11/14 (2013.01); D21H 17/28 (2013.01); D21H 21/10 (2013.01); D21H 21/18 (2013.01);
Abstract
The invention relates to a composition for use in a manufacture of paper, board or the like. The composition comprises a mixture of cationic starch having amylopectin content of at least 85%, and an amphoteric polymeric structure comprising structural units originating from non-ionic monomers, preferably (meth)acrylamide, anionic groups and cationic groups, the polymeric structure comprising cationic groups at least 0.2 mol-%.