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. 14, 2016
Filed:
Sep. 13, 2012
Shiho Tsuji, Tokyo, JP;
Masahiko Fukazawa, Tokyo, JP;
Shoichi Miyawaki, Tokyo, JP;
Takeshi Iimori, Tokyo, JP;
Shiho Tsuji, Tokyo, JP;
Masahiko Fukazawa, Tokyo, JP;
Shoichi Miyawaki, Tokyo, JP;
Takeshi Iimori, Tokyo, JP;
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Abstract
Provided is a method which is capable of producing a cellulose nanofiber dispersion liquid that has a low viscosity and excellent fluidity even at a high concentration, while exhibiting excellent transparency. In a method for producing cellulose nanofibers, wherein a cellulosic starting material is oxidized in water using an oxidant in the presence of an N-oxyl compound and a compound that is selected from the group consisting of a bromide, an iodide and a mixture thereof and the thus obtained oxidized cellulose is defibrated and dispersed, pulp which is obtained by carrying out kraft cooking after a hydrolysis process is used as the cellulosic starting material.