Porous diaphragms

Details Porous diaphragms Porous diaphragms

1974-06-27

1976-01-06

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204151, 204296, 204301, C25C 200

Patent

active

039309797

ABSTRACT:
A process for the manufacture of a porous diaphragm of a synthetic material, especially polytetrafluoroethylene, which comprises forming a sheet of the synthetic material in admixture with a solid particulate additive (eg starch) to be removed therefrom, introducing said sheet into a cell, and removing the solid particulate additive from the sheet by treating the sheet in situ in the cell with an acid (eg hydrochloric acid) containing a corrosion inhibitor (eg propargyl alcohol). The porous diaphragms are especially suitable for use in diaphragm cells for the production of chlorine from sodium chloride brine.

REFERENCES:
patent: 2542527 (1951-02-01), Honey et al.
patent: 3257334 (1966-06-01), Chen et al.
patent: 3282875 (1966-11-01), Connolly et al.
patent: 3718561 (1973-02-01), Jacob

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