Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1980-07-17
1982-05-18
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429251, H01M 216
Patent
active
043306020
ABSTRACT:
A battery separator useful in alkaline battery systems, and a process of forming the same, is formed from a composition having 30-70% by weight synthetic pulp, 15-65% by weight alkali resistant inorganic filler, and 1-35% by weight of long fibers having lengths of between 1/4 and 1 inch. The long fibers may be polyester, polyacrylic, polyamide, polyolefin, or other staple fiber material. The process for forming the subject battery separator requires first forming a substantially uniform aqueous mixture of the subject composition, sequentially treating said composition with a combination of a cationic and an anionic agent, applying the treated composition to a standard paper-making apparatus at a grammage rate to cause the resultant dried sheet to have a thickness of less than about 10 mils, and forming a sheet product.
REFERENCES:
patent: 3472700 (1969-10-01), Kollman
patent: 3920508 (1975-11-01), Tonemari
patent: 3967978 (1976-07-01), Honda et al.
patent: 4264691 (1981-04-01), O'Rell et al.
Hien Nguyen V.
Lundquist, Jr. Joseph T.
Lundsager Christian B.
O'Rell Dennis D.
Troffkin Howard J.
W. R. Grace & Co.
Walton Donald L.
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