Modified viscose fibres and method for their manufacture
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United States of America Patent
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Apr 22, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Sep 30, 1992
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Expired
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Abstract
Modified viscose fibres comprise regenerated cellulose and contain in their structure microcrystalline chitosan bound mainly by hydrogen bonds with the regenerated cellulose of viscose fibres. To improve the properties of the fibres the modified fibres contain as a third component a water-soluble and/or alkali-soluble natural polymer or a derivative thereof of polysaccharide origin containing groups bound by hydrogen and/or ionic bonds with the microcrystalline chitosan. Examples of such polymers are alginic acid, sodium and potassium alginate and sodium carboxymethycellulose.
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