Use of aqueous NaOH/thiourea solution in pilot-scale production of cellulose products
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United States of America Patent
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Jul 19, 2011
Grant Date -
Nov 20, 2008
app pub date -
Apr 21, 2006
filing date -
Apr 21, 2006
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Abstract
The present invention relates to the use of an aqueous sodium hydroxide/thiourea solution, specifically to the use of an aqueous sodium hydroxide/thiourea solution for pilot-scale production of cellulose products, wherein sodium hydroxide constitutes 8.1%-12.0% of the total weight of the aqueous solution, thiourea constitutes 3.0%-6.0% of the total weight of the aqueous solution, and said cellulose products include regenerated cellulose filaments, films, nonwovens, as well as composite fibers and/or functional materials of protein/cellulose, chitin/cellulose, Konjac Glucomannan/cellulose, nano-crystal particle/cellulose, etc.
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