Elastic polyurethane yarn and method of manufacturing the same
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United States of America Patent
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Oct 2, 2012
Grant Date -
Mar 5, 2009
app pub date -
Dec 26, 2006
filing date -
Dec 27, 2005
priority date (Note) -
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Abstract
The present invention provides elastic polyurethane yarns which possess excellent elongation, recoverability, heat resistance and chemical resistance, as well as a method of manufacturing the same. The elastic polyurethane yarns comprise a polyurethane being composed mainly of a polymeric diol and a diisocyanate, and contains through incorporation a compound having within the molecule a phosphorus-nitrogen interatomic bond(s). The process can produce the elastic polyurethane yarns by adding to a solution of the polyurethane a compound having within the molecule a phosphorus-nitrogen interatomic bond(s), followed by spinning.
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