Acrylic fibers with high physical properties
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United States of America Patent
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Aug 28, 1990
Issued Date -
N/A
app pub date -
May 27, 1988
filing date -
Aug 5, 1985
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Expired
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Abstract
Acrylic fibers with high physical properties particularly suitable as material for cement reinforcement are provided by spinning a spinning solution of an acrylonitrile polymer at a particular linear velocity ratio of extrusion, thereby forming gel fibers; regulating the internal water content of the gel fibers, subjecting the fibers to dry-heat treatment under tension or dry-heat stretching under a particular temperature condition; and cooling the fibers under tension.
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