Process for preparing superfine ion-exchange fibers

Details Process for preparing superfine ion-exchange fibers Process for preparing superfine ion-exchange fibers

1979-08-16

1981-04-28

Woo, Jay H.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

81155, 264 83, 264185, 264232, 264344, 521 27, 521 29, 521 31, D02G 300

Patent

active

042646766

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.

REFERENCES:
patent: 3097991 (1963-07-01), Miller et al.
patent: 3546063 (1970-12-01), Breen
patent: 3629161 (1971-12-01), Paine et al.
patent: 3644225 (1972-02-01), Quentin et al.
patent: 3741945 (1973-06-01), Bourat et al.
patent: 3770666 (1973-11-01), Bourat et al.

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