Ion-exchange fabric of fluorinated polymer containing pendant si

Details Ion-exchange fabric of fluorinated polymer containing pendant si Ion-exchange fabric of fluorinated polymer containing pendant si

1974-01-04

1976-10-12

Briggs, Sr., Wilbert J.

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

57140R, 139420R, 260 22R, 260 793MU, D06M 1114

Patent

active

039855015

ABSTRACT:
A woven fibrous ion-exchange fabric is initially formed from fibers as in the form of threads, ropes or yarns which comprise a fluorinated polymer with sulfonyl-containing pendant side chains in the --SO.sub.2 X form wherein X is fluorine or chlorine. Conversion of the sulfonyl group in the polymer to ionic form causes longitudinal shrinkage of the fiber in the woven fabric and lateral fiber swelling thereby forming an essentially impermeable fabric to physical flow of liquid through spaces between the fibers. High strength is realized in the woven fabric without a need for reinforcing material.

REFERENCES:
patent: 3718627 (1973-02-01), Grot
patent: 3835072 (1974-09-01), Economy et al.

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