Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1977-12-13
1978-10-17
LeFevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429249, H01M 604
Patent
active
041210220
ABSTRACT:
The invention relates to a semi-permeable membrane for lead acid batteries. The membrane has a microporous structure comprising a first polymer and a second polymer closely mixed together, the first polymer being poly (2-hydroxyethylmethacrylate), known as reticulated poly HEMA, characterized by the fact that the second polymer comprises one polymer or a mixture of several different polymers chosen from among polyoxyethylene glycol, polyvinylpyrrolidone, polyacrylic acid, polymethacrylic acid, copolymers of acrylic and methacrylic acid, polyacrylates and polymethacrylates of alkyl, and the copolymers of the acrylates and methacrylates of alkyls.
REFERENCES:
patent: 2858353 (1958-10-01), Mendelsohn
patent: 3955014 (1976-05-01), Moster et al.
Dick Richard
Feuillade Georges
Gadessaud Robert
Nicolas Louis
Compagnie Generale D'Electricite
Institut National de Recherche Chimique Appliquee Ircha
LeFevour Charles F.
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