IMPROVED METHOD FOR THE PREPARATION OF MICROCRYSTALLINE CELLULOSE
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United States of America Patent
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Sep 12, 2024
app pub date -
Jan 12, 2022
filing date -
Jan 13, 2021
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Abstract
A mill dried microcrystalline cellulose (MCC) is obtained in a process comprising the steps of a) providing MCC having a moisture content of from 20 to 75 percent, based on the total weight of the moist MCC; and b) mill-drying the moist MCC in a single device capable of milling and drying in combination. The process can provide mill-dried microcrystalline cellulose having similar particle size distribution (LEFI, DIFI and EQPC) and moisture content as the corresponding spray-dried microcrystalline cellulose. The process can provide mill-dried microcrystalline cellulose having a higher tapped/untapped bulk density and/or a lower Carr index, while keeping a similar moisture content, as the corresponding spray-dried microcrystalline cellulose.
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