Stabilised solutions of polysaccharide
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United States of America Patent
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Dec 30, 1997
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N/A
app pub date -
Mar 21, 1997
filing date -
Oct 20, 1994
priority date (Note) -
Expired
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Abstract
The use together of (1) an aromatic compound containing a benzene ring bearing at least two substituents selected from the group consisting of hydroxy groups, primary amino groups and secondary amino groups and (2) a sulphur-containing compound containing an --SH group or an anion or precursor thereof, not being a carbocyclic arenethiol, is effective in stabilising solutions of polysaccharides such as cellulose in tertiary amine N-oxides against thermal degradation. Such solutions are useful for the manufacture of extruded articles such as fibers and films.
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