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:
Dec. 04, 2018
Filed:
Sep. 21, 2016
Applicant:
Ecolab Usa, Inc., St. Paul, MN (US);
Inventors:
Yulin Zhao, Shanghai, CN;
Jun Li, Huangshi, CN;
Qing Long Rao, Shanghai, CN;
Stephen Ashton, St. Charles, IL (US);
Weiguo Cheng, Naperville, IL (US);
Aleksandar Todorovic, Helsinki, FI;
Alan Smith, Sandbach, GB;
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/37 (2006.01); D21H 21/20 (2006.01); D21H 21/18 (2006.01); D21H 17/67 (2006.01); D21H 21/10 (2006.01); D21C 3/02 (2006.01); D21C 5/00 (2006.01); D21C 5/02 (2006.01); D21H 17/69 (2006.01); D21H 17/00 (2006.01); D21H 17/66 (2006.01);
U.S. Cl.
CPC ...
D21H 17/375 (2013.01); D21C 3/02 (2013.01); D21C 5/00 (2013.01); D21C 5/025 (2013.01); D21H 17/675 (2013.01); D21H 17/69 (2013.01); D21H 17/74 (2013.01); D21H 21/10 (2013.01); D21H 21/18 (2013.01); D21H 21/20 (2013.01); D21H 17/66 (2013.01); Y02W 30/648 (2015.05);
Abstract
Methods of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength, and enhancing filler retention in a papermaking process are disclosed. The methods improve the efficiency of drainage aids, wet web strength aids, and/or wet strength aids by coating at least some of the filler particles with a material that prevents the filler materials form adhering to a those additives.