Battery separator and a battery
AssigneeJapan Vilene Company, Ltd.
InventorsMasanao Tanaka, Nobutoshi Tokutake, Yoshihiko Kondo, Hiroaki Yamazaki, Masaki Hirooka, Koji Kimura
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Abstract
A battery separator comprising a sheet material containing a polyvinyl alcohol cross-linked by a cross-linking group of the general formula (I): ##STR1## wherein A represents a group of --CH.dbd.CH--R.sub.1 or ##STR2## R.sub.1 represents an optionally substituted quaternary nitrogen-containing aromatic heterocyclic group, R.sub.2 and R.sub.3 independently represent a hydrogen atom or alkoxy group having 1 to 4 carbon atoms, m is o or 1, and n is an integer of 1 to 6, is disclosed. The separator exhibits a good resistance to electrolyte, electrolyte holding rate, and resistant to short-circuits.
Claims11
A battery separator comprising a sheet material containing a polyvinyl alcohol cross-linked by a cross-linking group of the general formula (I):
- ##STR7## wherein A represents a group of --CH.dbd.CH--R.sub.1 or ##STR8## R.sub.1 represents an optionally substituted quaternary nitrogen-containing aromatic heterocyclic group, R.sub.2 and R.sub.3 independently represent a hydrogen atom or alkoxy group having 1 to 4 carbon atoms, m is o or 1, and n is an integer of 1 to 6.
Dependencies are inferred from the claim text.