Poly (2-hydroxyethylmethacrylate) membranes for electrochemical

Details Poly (2-hydroxyethylmethacrylate) membranes for electrochemical Poly (2-hydroxyethylmethacrylate) membranes for electrochemical

1978-05-18

1979-09-18

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429225, 429249, 20415915, H01M 604

Patent

active

041683528

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: 3939049 (1976-02-01), Ratner et al.
patent: 3955014 (1976-05-01), Moster et al.

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