Textiles: spinning – twisting – and twining – Apparatus and processes – Elements
Patent
1974-06-27
1976-03-02
Watkins, Donald E.
Textiles: spinning, twisting, and twining
Apparatus and processes
Elements
260 21R, D02G 302, D02G 304
Patent
active
039409163
ABSTRACT:
A woven or knitted fabric to be employed for ion exchange purposes comprises filaments of a fluorinated polymer with sulfonyl containing pendant side chains either in ionic or nonionic form whereby the filaments are supported by higher strength material prior to a weaving or knitting operation. Thereafter the supporting material is desirably removed. The final fabric may be woven so that the fabric is essentially impermeable to passage of fluids through fiber interstices or in an alternate manner is woven or knitted to allow controlled passage of liquid through fiber interstices. The polymer employed in the fabric possesses permselectivity giving desirable performance in electrolytic as well as membrane ion exchange and reverse osmosis devices.
REFERENCES:
patent: 2716049 (1955-08-01), Latour
patent: 3179618 (1965-04-01), Roberts
patent: 3282875 (1966-11-01), Connolly et al.
patent: 3344596 (1967-10-01), Spicer et al.
patent: 3350488 (1967-10-01), Breen
patent: 3784399 (1974-01-01), Grot
E. I. Du Pont de Nemours and Company
Watkins Donald E.
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