Cation exchange fibers
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United States of America Patent
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Apr 28, 1992
Grant Date -
N/A
app pub date -
Feb 17, 1989
filing date -
Mar 14, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides cation exchange fibers having a high capacity of ion exchange and a high utilization rate of ion exchange radicals. The fibers are produced so as to have 3 m eq/g or more of carboxyl groups introduced by simultaneous crosslinking and hydrolyzing treatments of acrylic fibers, and to have tensile strength 1 g/d or more and a degree of water-swellability less than 100%, while maintaining fiber properties without problems in practical use.
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