Cellulose fiber-based compositions and their method of manufacture
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United States of America Patent
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Jan 14, 2003
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app pub date -
Nov 3, 1999
filing date -
Nov 3, 1999
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Abstract
An improved method for refining cellulose that produces a highly refined cellulosic material comprising soaking raw material in a mild NaOH using reduced temperatures and pressures, and refining the material with a plate refiner so that a waste water stream is reduced in volume and has a pH within a range of 8 to 9. Also, a HRC gel having a lignin concentration of at least about one (1)% by weight, and a water retention capacity of about 25 to at least about 56 g H.sub.2 O/g dry HRC is provided.
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