Drying/transportation and releasing MFC
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United States of America Patent
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Mar 16, 2021
Grant Date -
May 2, 2019
app pub date -
Apr 7, 2017
filing date -
Apr 11, 2016
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Abstract
A method of forming an aqueous solution comprising mircrofibrillated cellulose, the method comprising the steps of providing a substantially dry composite material, comprising microfibrillated cellulose and a filler material, wherein said filler material is precipitated onto fibers or fibrils of said microfibrillated cellulose; providing an aqueous media, wherein the method further comprises the step of lowering the pH value of said aqueous media and then mixing said aqueous media with said substantially dry composite material, such that the filler material is released from said microfibrillated cellulose, thus dissolving said microfibrillated cellulose; or the step of mixing said aqueous media with said substantially dry composite material, and then lowering the pH of said mixture, such that the filler material is released from said microfibrillated cellulose, thus releasing said microfibrillated cellulose.
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