Acid-type carboxymethylated cellulose nanofiber and production method thereof

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United States of America Patent

PATENT NO 11591721
APP PUB NO 20190330767A1
SERIAL NO

16471375

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Abstract

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An object is to provide an acid-type carboxymethylated cellulose nanofiber in which the viscosity is not excessively high at the time of preparing a dispersion liquid and the introduced carboxymethyl group is desalted to convert the acid type, and the acid-type carboxymethylated cellulose nanofiber has 0.01 to 0.50 of the degree of substitution with carboxymethyl group per glucose unit, wherein the B-type viscosity in an aqueous dispersion with a concentration of 0.95 to 1.05% by mass is 1000 mPa·s or more under the condition of 60 rpm and 20° C., and 7000 mPa·s or more under the condition of 6 rpm and 20° C.

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Patent Owner(s)

Patent OwnerAddress
NIPPON PAPER INDUSTRIES CO LTDTOKYO 114-0002

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Takeshi Tokyo, JP 192 2246
Matsumoto, Makoto Tokyo, JP 99 971
Onogi, Shinichi Tokyo, JP 5 13
Sasaki, Kenichiro Tokyo, JP 4 7
Takaichi, Satoshi Tokyo, JP 12 40

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