Process for electrolysing sodium chloride or hydrochloric acid,

Chemistry: electrical and wave energy – Processes and products

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204128, 204252, 204296, C25B 116, C25B 124, C25B 1308

Patent

active

041070054

ABSTRACT:
This disclosure is directed to fluorocarbon polymers, polymeric membranes, and electrochemical cells and processes. The polymers and membranes are produced by radiation techniques to provide improved products. For example, .alpha., .beta., .beta.-trifluorostyrene in an inert organic solvent is grafted onto an inert film, such as tetrafluoroethylene-hexafluoropropylene copolymer, by irradiation, i.e. with Co-60 gamma radiation at a dose of several Mrad. The grafted film is then sulfonated, preferably in a chlorosulfonic acid bath. The resulting film is useful as a membrane or diaphragm in various electrochemical cells such as chlor-alkali or fuel cells.

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patent: 3878072 (1975-04-01), Cook et al.

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