Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Patent
1982-09-02
1984-02-28
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer or spacer insulating structure
429249, 429251, H01M 216
Patent
active
044342152
ABSTRACT:
A composition suitable for use as a battery separator comprising a substantially homogeneous mixture of a copolymer of ethylene and acrylic acid having from 10 to 23 mole percent acrylic acid therein and a melt index of from about 0.1 to 5 in combination with a copolymer of ethylene and acrylic acid having at least 25 mole percent acrylic acid therein and having a melt index of at least about 10. The present invention is further directed to a process of forming a sheet product from the subject composition and the use of the formed product as a battery separator.
REFERENCES:
patent: 3427206 (1969-02-01), Scardaville et al.
patent: 3615865 (1971-10-01), Wetherell
patent: 3892594 (1975-07-01), Charlesby et al.
patent: 3928497 (1975-12-01), Ohmori et al.
patent: 4230549 (1980-10-01), D'Agostino et al.
patent: 4287276 (1981-09-01), Lundquist, Jr.
Lundquist, Jr. Joseph T.
Wszolek Walter R.
Skapars Anthony
Troffkin Howard J.
W. R. Grace & Co.
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