Polypropylene separator for use in alkaline storage batteries an

Details Polypropylene separator for use in alkaline storage batteries an Polypropylene separator for use in alkaline storage batteries an

1978-10-23

1980-08-12

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429250, 4274301, H01M 216

Patent

active

042174040

ABSTRACT:
Intrinsically nonwettable polypropylene battery separators are rendered wettable by treating them with polybenzimidazole.
Polybenzimidazole (PBI) treated polypropylene (PP) separators exhibited excellent thermal and chemical stabilities, show excellent electrolyte retention, and are gas permeable.

REFERENCES:
patent: 3856549 (1974-12-01), Daukays
patent: 3929509 (1975-12-01), Taskier
patent: 3933525 (1976-01-01), Palmer et al.
patent: 4110143 (1978-08-01), Cogliano et al.
patent: 4122133 (1978-10-01), Bernstein et al.

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