Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1976-12-27
1978-11-21
Edmundson, F.C.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204 98, C25B 1308, C25B 134
Patent
active
041265360
ABSTRACT:
Synthetic-fiber diaphragms are further improved by incorporating in the diaphragm an effective proportion of a suitable inorganic material such as TiO.sub.2, BaSO.sub.4 or K.sub.2 Ti.sub.8 O.sub.17, which is more hydrophilic than the fluoropolymer forming the diaphragm. This is done either by mixing the inorganic material with the resin before it is made into fiber or by supplying sub-micron-sized particles of the inorganic material, during or even after diaphragm formation. A principal benefit is that this lowers the cell voltage which is required during an initial period (up to about 300 hours) of the operation of a chlor-alkali cell provided with such a diaphragm, making it possible to avoid such drawbacks as suffering an initial period of low production or the necessity of providing external cooling to the cell during such an initial period.
REFERENCES:
patent: 2788285 (1957-04-01), Cooke et al.
patent: 3346422 (1967-10-01), Berger
patent: 3616184 (1971-10-01), Katugiri et al.
patent: 3702267 (1972-11-01), Grot
patent: 4036729 (1977-07-01), Patil et al.
Argade Shyam D.
Balko Edward N.
Porath Douglas A.
Shrewsburg James E.
BASF Wyandotte Corporation
Dunn Robert E.
Edmundson F.C.
Linkhauer John W.
Swick Bernhard R.
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