Ion exchange fabrics

Details Ion exchange fabrics Ion exchange fabrics

D - Textiles, Paper

02

G

28/1, 204/201

D02G 3/02 (2006.01) B01J 47/12 (2006.01) C08F 8/44 (2006.01) C08J 5/22 (2006.01) D01F 6/12 (2006.01)

Patent

CA 1036344

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 sup- ported 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 perform- ance in electrolytic as well as membrane ion exchange and reverse osmosis devices.

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