Battery separator containing carbodiimide polymer

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure

Reexamination Certificate

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C429S129000, C429S134000

Reexamination Certificate

active

06896994

ABSTRACT:
A separator capable of inhibiting the self-discharge of a battery.The separator is a battery separator obtained by applying a polymer having in the molecule a carbodiimide unit represented by the following formula (I):in-line-formulae description="In-line Formulae" end="lead"?—[—R—N═C═N—]n—  (I)in-line-formulae description="In-line Formulae" end="tail"?(wherein R means an organic group and n means an integer of 1 to 10,000) to a porous sheet substrate.

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European Search Report dated Nov. 27, 2002.

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