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. 15, 2021
Filed:
Dec. 14, 2016
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
Zhiyi Zhang, Naperville, IL (US);
Mingli Wei, Naperville, IL (US);
Kevin McDonald, Naperville, IL (US);
Weiguo Cheng, Naperville, IL (US);
Pious V. Kurian, Sugar Land, TX (US);
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/37 (2006.01); D21H 21/10 (2006.01); C08F 220/56 (2006.01); C08F 230/06 (2006.01); D21H 21/12 (2006.01); D21H 21/28 (2006.01); D21H 21/36 (2006.01); D21H 21/50 (2006.01); C08F 220/06 (2006.01);
U.S. Cl.
CPC ...
D21H 17/375 (2013.01); C08F 220/56 (2013.01); C08F 230/06 (2013.01); D21H 17/37 (2013.01); D21H 21/10 (2013.01); D21H 21/12 (2013.01); D21H 21/28 (2013.01); D21H 21/36 (2013.01); D21H 21/50 (2013.01); C08F 220/06 (2013.01);
Abstract
Papermaking additives that include various polymers and/or micropolymers are disclosed. The micropolymers may have a network structure that can be created by crosslinking or other means. The micropolymer may be an acrylamide based polymer having a boronic acid moiety. The weight average molecular weight of the micropolymer may be greater than 1,000,000.