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:
May. 19, 2015
Filed:
Oct. 01, 2013
Applicant:
Ecolab Usa Inc., Naperville, IL (US);
Inventors:
David J. Castro, DeKalb, IL (US);
Rangarani Karnati, Naperville, IL (US);
Shawnee M. Wilson, Downers Grove, IL (US);
Weiguo Cheng, Naperville, IL (US);
Mei Liu, Plainfield, IL (US);
Zhiyi Zhang, Naperville, IL (US);
Assignee:
Ecolab USA Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 13/00 (2006.01); D21H 17/25 (2006.01); D21H 17/37 (2006.01); D21H 21/10 (2006.01); D21H 21/20 (2006.01);
U.S. Cl.
CPC ...
D21H 21/20 (2013.01); D21H 17/375 (2013.01); D21H 17/25 (2013.01);
Abstract
The invention provides methods and compositions for improving the characteristics of paper substrates. The method involves adding to a paper substrate an NCC-polymer. NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.