Method of preparing an asbestos diaphragm

Details Method of preparing an asbestos diaphragm Method of preparing an asbestos diaphragm

1988-09-02

1989-11-07

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204128, 204252, 204283, 204295, 204296, 162153, 162155, C25G 114

Patent

active

048790095

ABSTRACT:
An electrolyte permeable asbestos diaphragm is prepared by depositing asbestos and a particulate thermoplastic polymeric material from an aqueous slurry including alkali metal hydroxide onto a porous substrate, and heating the deposited asbestos, particulate thermoplastic polymeric material, and alkali metal hydroxide for a period of time, e.g., at least 2 hours, and at temperatures sufficient to react the asbestos and alkali metal hydroxide but temperatures insufficient to melt or sinter the particulate thermoplastic polymeric material, whereby the particulate thermoplastic polymeric material functions to provide permeability for the diaphragm.

REFERENCES:
patent: 4186065 (1980-01-01), Dilmore et al.
patent: 4701250 (1987-10-01), Fenn, III et al.

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