Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1977-11-02
1978-09-19
Andrews, R. L.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204 98, 204128, C25B 1308
Patent
active
041152409
ABSTRACT:
Electrochemical properties of a cation exchange membrane of a carboxylic acid type fluorinated polymer which is used for an electrolysis of an aqueous solution of an alkali metal chloride is recovered by converting ion exchange groups of --COO).sub.m M; wherein M represents an alkali metal or an alkaline earth metal; and m represents a valence of M; to the corresponding acid or ester groups of --COOR wherein R represents hydrogen or a C.sub.1 - C.sub.5 alkyl group and heat-treating the fluorinated polymer having the groups of --COOR.
REFERENCES:
patent: 4051002 (1977-09-01), Gunjima et al.
Asawa Tatsuro
Gunjima Tomoki
Andrews R. L.
Asahi Glass Company Ltd.
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