Acid type carboxylated cellulose nanofiber
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United States of America Patent
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Feb 14, 2023
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Nov 2, 2017
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Dec 21, 2016
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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 s−1 at 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.
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