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. 03, 2020
Filed:
Sep. 15, 2016
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Yuping Luo, Johns Creek, GA (US);
Roopa Tellakula, Suwanee, GA (US);
Scott Rosencrance, Carrollton, GA (US);
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/05 (2006.01); C08J 3/205 (2006.01); D21H 17/37 (2006.01); D21H 17/39 (2006.01); D21H 21/20 (2006.01); D21H 21/18 (2006.01); D21H 17/38 (2006.01);
U.S. Cl.
CPC ...
C08J 3/05 (2013.01); C08J 3/205 (2013.01); D21H 17/37 (2013.01); D21H 17/375 (2013.01); D21H 17/38 (2013.01); D21H 17/39 (2013.01); D21H 21/18 (2013.01); D21H 21/20 (2013.01); C08J 2333/26 (2013.01);
Abstract
The present disclosure relates to a novel aqueous composition of a structurally modified, water soluble polymer suitable for papermaking and to a method for manufacturing it. The method includes cleaving a backbone of the acrylamide polymer by a degradation agent and cross-linking the acrylamide polymer subjected to cleaving by using a polyfunctional cross-linking agent.