Spandex fibers made using low unsaturation polyols
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United States of America Patent
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Aug 23, 1994
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N/A
app pub date -
Jun 4, 1993
filing date -
Jun 4, 1993
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Abstract
This invention relates to the production of spandex fibers made from segmented polyurethane(urea)s which are prepared from low unsaturation-containing polyols made by polymerizing alkylene oxides in the presence of a double metal cyanide complex catalyst. With the low unsaturation-containing polyols, spandex fibers can be prepared that have better physical properties than fibers prepared with PTMEG polyols.
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