Ion exchange membranes pre-expanded with di- and poly ether-glyc

Details Ion exchange membranes pre-expanded with di- and poly ether-glyc Ion exchange membranes pre-expanded with di- and poly ether-glyc

1984-07-26

1986-06-17

Schofer, Joseph L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204263, 204296, 521 27, 521 28, 521 33, C25B 900, C25B 1300, C08D 520

Patent

active

045954763

ABSTRACT:
Pre-swelled ion exchange membranes formed from one or more layers of fluorinated polymer having carboxylic or sulfonic acid functional groups and which polymer contains about 8 to 30% by weight of a swelling agent of the formula HO(CH.sub.2 CHYO).sub.n H where Y=H or CH.sub.3 and n=2, 3 or 4 are disclosed. Also disclosed are processes for preparing these membranes, electrochemical cells utilizing these membranes, and methods of preparing said cells for use in chloralkali processes.

REFERENCES:
patent: 4000057 (1976-12-01), Muazek et al.
patent: 4174426 (1979-11-01), Asami et al.
patent: 4200538 (1980-04-01), Seita et al.
patent: 4270996 (1981-06-01), Suhara et al.
patent: 4376030 (1983-03-01), Ezzell et al.
Research Disclosure, Feb. 1982, pp. 32-34.
Technology of Solvents & Plasticizers-Doolittle, 1956, John Wiley & Sons, p. 667.

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