Solution containing cellulose dissolved in N-methylmorpholine-N-oxide and high tenacity lyocell multifilament using the same
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United States of America Patent
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May 8, 2007
Grant Date -
Jul 14, 2005
app pub date -
Oct 24, 2003
filing date -
Jun 30, 2003
priority date (Note) -
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Abstract
This invention relates to a method of preparing cellulose solution which is homogeneous at relatively low temperature, in which a small amount of cellulose powder or polyvinylalcohol is dissolved in the liquid-state, concentrated N-methylmorpholine-N-oxide (hereinafter, referred to as `NMMO`) so as to lower the solidifying temperature of NMMO, and then, the resulting solution and cellulose powder are fed into an extruder so as to be mixed, swollen and melted in the extruder.
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