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US 12,031,016 B2Granted
Dispersion composition containing carboxymethyl cellulose
AssigneeNippon Paper Industries Co., Ltd.
InventorsKazuhiko Inoue, Hiroyoshi Suzuki, Kasumi Nishigaya, Takeshi Nakatani
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Abstract
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.
Claims4
A method for producing a dispersion composition, comprising
- step 1 of preparing a mixture comprising a carboxymethyl cellulose having a degree of carboxymethyl substitution of 0.20 or more and having a degree of crystallization of cellulose type I of 50% or more, and a water-based medium, and
- step 2 of subjecting the mixture obtained in step 1 to stirring at a rotational speed of 8000 to 15000 rpm for 1 minute or more, thereby obtaining a dispersion composition, wherein
- the carboxymethyl cellulose in the dispersion composition has a median diameter of 10.0 to 150.0 μm;
- and
- wherein the dispersion composition has a viscosity (6 rpm, 25° C.) of 1000 mPa·s to 30000 mPa·s at a solid content of the carboxymethyl cellulose of 1% (w/v).
2 more elements
Dependencies are inferred from the claim text.