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:
Sep. 19, 2023
Filed:
Dec. 05, 2018
Applicant:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Inventors:
Kazuhiko Inoue, Tokyo, JP;
Takeshi Nakatani, Tokyo, JP;
Yusuke Tada, Tokyo, JP;
Kasumi Nishigaya, Tokyo, JP;
Hiroyoshi Suzuki, Tokyo, JP;
Assignee:
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 11/12 (2006.01);
U.S. Cl.
CPC ...
C08B 11/12 (2013.01);
Abstract
A carboxymethylated cellulose having a carboxymethyl substitution of no more than 0.50 and a cellulose I type crystallization of at least 50%. Ideally, the anionization is 0.00-1.00 meq/g. The Schopper-Riegler freeness is ideally at least 60.0° SR. Ideally the ratio of filtration residue is 0%-30% by mass. The viscosity (30 rpm, 25° C.) for an aqueous dispersion having a 1% solid content (w/v) is ideally no more than 10.0 mPa·s.