Title: Ion-exchange hollow fibers

Abstract: An ion-exchange hollow fiber is prepared by introducing into the wall of the fiber polymerizable liquid monomers, and polymerizing the monomers therein to form solid, insoluble, cross-linked, ion-exchange resin particles which embed in the wall of the fiber. Excess particles blocking the central passage or bore of the fiber are removed by forcing liquid through the fiber. The fibers have high ion-exchange capacity, a practical wall permeability and good mechanical strength even with very thin wall dimensions. Experimental investigation of bundles of ion-exchange hollow fibers attached to a header assembly have shown the fiber to be very efficient in removing counterions from solution.

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Inventors: Rembaum, Alan (Altadena, CA, US)
Yen, Shiao-Ping S. (Altadena, CA, US)
Klein, Elias (New Orleans, LA, US)

Application Number: 552158
Filing Date: 1975-02-24
Publication_date: 1977-08-30
Assignee: California Institute of Technology (Pasadena, CA)
Primary Class(es): 210/500.23 210/500.28, 264/41, 264/182, 264/209.6, 521/29, 521/30, 521/32, 521/33, 521/54, 521/142, 521/146
Other Classes:
US Patent Ref:

3186941	Jun, 1965	Skiens	210/500.
3423491	Jan, 1969	McLain et al.	264/49.
3645922	Feb, 1972	Weiss	260/2.
3754055	Aug, 1973	Rembaum	260/879.

Other Refs:
Primary Examiner: Spear, Jr., Frank A.
Assistant Examiner: Lander, Ferris H.
Attorney: Jacobs; Marvin E.