Process for the production of a microfibrillated cellulose composition
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United States of America Patent
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May 12, 2020
Grant Date -
May 26, 2016
app pub date -
May 27, 2014
filing date -
Jun 20, 2013
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Abstract
The present invention relates to a process for the production of microfibrillated cellulose composition, wherein the microfibrillated cellulose has an average fiber length in the range from 500 to 1300 μm and a percentage of fiber length in the category ≤200 μm of at least 15%, obtained by subjecting an aqueous mixture comprising 30 to 70% by weight of cellulose containing fibers to mechanical shearing at a temperature in the range of from ≥40° C. to ≤120° C. in the presence of at least one thermostable biocide, to the microfibrillated cellulose composition obtained in this process and their use in a process for production of paper, card and board comprising draining a paper stock comprising the microfibrillated cellulose composition with sheet formation in the wire.
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