To provide a method for producing alkali cellulose, in which the cellulose polymerization degree decreases little and few bases are used, and to provide a method for producing cellulose ether using the obtained alkali cellulose.
[1] The method for producing alkali cellulose includes: a step 1 for pulverizing a cellulose-containing raw material in the presence of 0.6-1.5 mol of a basic compound per 1 mol of an anhydroglucose unit constituting the cellulose in the cellulose-containing raw material and under the condition in which the moisture content in the cellulose-containing raw material is ≤10 mass% relative to the cellulose, and thereby obtaining a cellulose powder mixture having a median size of the cellulose-containing raw material of ≤150 μm; and a step 2 for obtaining pulverized alkali cellulose by adjusting the moisture content in the obtained cellulose powder mixture to 30-100 mass% relative to the cellulose in the cellulose-containing raw material used in the step 1 as a consequence of adding water to the cellulose powder mixture. [2] The method for producing cellulose ether produces the cellulose ether by means of the reaction between the alkali cellulose produced in the production method and an etherification agent.
| JP2017160327 | VOLATILE COMPOSITION |
| JPS61174414 | PRODUCTION OF SPINNABLE SOLUTION FOR ARTIFICIAL FIBER |
| WO/1999/054361 | METHOD FOR ACTIVATING AND DERIVATIZING CELLULOSE |
YOSHIDA MINORU
MIYAZATO RYO
SHIBA KENICHI
TAKAHASHI RUI
IMORI YOICHIRO
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Makoto Kataoka