Process for producing cellulose derivatives of high bulk density, good flowability and/or dispersibility in cold water as well as low solution color

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United States of America Patent

PATENT NO 10053519
APP PUB NO 20160244533A1
SERIAL NO

15096704

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Abstract

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A particulate cellulose derivative is obtained in a process of grinding and drying a moist cellulose derivative which comprises the steps of

    A) providing a cellulose derivative having a moisture content of from 60 to 95 percent, based on the total weight of the moist cellulose derivative,B) grinding and partially drying the moist cellulose derivative in a gas-swept impact mill;C) contacting the ground and partially dried cellulose derivative with an additional amount of a drying gas outside the gas-swept impact mill; andD) subjecting the cellulose derivative to partial depolymerization after having contacted the cellulose derivative with a drying gas in step C).

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Patent Owner(s)

  • DOW GLOBAL TECHNOLOGIES LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goerlach-Doht, Yvonne M Rosengarten, DE 14 32
Hermanns, Juergen Nottensdorf, DE 16 32
Hoelzer, Bettina Walsrode, DE 6 6

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