Process for preparing superfine ion-exchange fibers
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United States of America Patent
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-
Apr 28, 1981
Grant Date -
N/A
app pub date -
Aug 16, 1979
filing date -
Aug 16, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Superfine fibers of polyvinyl alcohol type having a single fiber diameter of 0.1-1.0.mu. and a fineness of 0.8-80.times.10.sup.-4 d/f are baked in the presence of a dehydration catalyst so that the weight loss ratio of fibers falls under the range of about 5 to 40%. When ion-exchange radicals are introduced into the partially dehydrated fiber, superfine fibers with a high ion-exchange rate are obtained.
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