C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
319/12, 117/183,
C25B 13/06 (2006.01) C25B 13/04 (2006.01) H01M 2/16 (2006.01)
Patent
CA 1162604
ABSTRACT OF THE DISCLOSURE The invention relates to a method for the manufacture of diaphragms for electrochemical cells by impregnating asbestos paper with an organic plastic, and has as its principal object the development of such a method in a manner such that asbestos diaphragms which have high mechanical strength and are also cost-effective can be manufactured in efficient production. According to the invention, it is provided for this purpose to treat asbestos paper made by extrusion with a solution of polyvinylchloride or polysulfone in an organic solvent. The diaphragms prepared by the method according to the invention are particularly suitable as cover layers in in fuel cells with an alkaline electrolytc.
360618
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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