Nippon Paper Industries Co., Ltd.

Kasumi Nishigaya

Kazuhiko Inoue

Takeshi Nakatani

Hiroyoshi Suzuki

Yusuke Tada

This dispersion composition contains a water-based medium and a carboxymethyl cellulose having a carboxymethyl substitution degree of 0.20 or more and a cellulose-I crystallinity index of 50% or more, a water-based medium is easily dispersed even by low mixing power, and has a high viscosity.

Dispersion composition containing carboxymethyl cellulose

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&#xb0; SR. Ideally the ratio of filtration residue is 0%-30% by mass. The viscosity (30 rpm, 25&#xb0; C.) for an aqueous dispersion having a 1% solid content (w/v) is ideally no more than 10.0 mPa&#xb7;s.

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Tokyo, Japan

Kasumi Nishigaya