METHOD FOR PRODUCING CELLULOSE PARTICLES OR CELLULOSE ACETATE PARTICLES
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United States of America Patent
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Feb 4, 2021
app pub date -
Jul 7, 2020
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Jul 30, 2019
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Provided is a method for producing cellulose particles or cellulose acetate particles. By a production method including: (a) dissolving cellulose acetate in an organic solvent and preparing a cellulose acetate solution; (b) obtaining an emulsion by passing the cellulose acetate solution and an aqueous medium through a gap between an outer cylinder and an inner cylinder arranged coaxially inside the outer cylinder and rotating at least one of the outer cylinder and the inner cylinder; and (c) precipitating cellulose acetate particles from the emulsion, cellulose acetate particles are produced. By further saponifying the cellulose acetate obtained by the production method, cellulose particles are produced.
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