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:
Feb. 14, 2023
Filed:
Nov. 02, 2017
Nippon Paper Industries Co., Ltd., Kita-ku, JP;
Satoshi Takaichi, Tokyo, JP;
Takeshi Nakatani, Tokyo, JP;
Masahiro Morita, Tokyo, JP;
Shinichi Onogi, Tokyo, JP;
Takeshi Fujii, Tokyo, JP;
Kenichiro Sasaki, Tokyo, JP;
Makoto Matsumoto, Tokyo, JP;
Takeshi Nakayama, Tokyo, JP;
NIPPON PAPER INDUSTRIES CO., LTD., Kita-ku, JP;
Abstract
The present invention intends to provide an acid type carboxylated cellulose nanofiber having a high viscosity in a low shear region, or to provide an acid type carboxylated cellulose nanofiber having a very short fiber length, and the acid type carboxylated cellulose nanofiber has a carboxy group at least in part of a constituent unit constituting a cellulose molecular chain, wherein a viscosity of water dispersion with a content from 0.95 to 1.05% by mass is 400 Pa·s or higher at a shear velocity from 0.003 to 0.01 sat 30° C., or an average fiber length is from 50 to 500 nm and a ratio of fibers having a fiber length of 300 nm or shorter is 50% or higher.