MANUFACTURING METHOD OF BATTERY SEPARATOR

Japanese Patent JPS58194254

A

PURPOSE: To manufacture a battery separator with excellent electrolytic affinity by sulfonation-processing woven or unwoven cloth made of olefin series resin and immersing it in alkaline aqueous solution of a high concentration.

CONSTITUTION: Woven or unwoven cloth made of olefin series resin is sulfonation-processed by immersing it in a fuming sulfuric acid or a heat concentrated sulfuric acid. Then the affinity to an electrolyte is increased by cleaning the cloth by water, immediately immersing it in aqueous solution such as NaOH and KOH of a high concentration, and forming a sulfonic radical connected to an olefin into alkaline salt.

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ISHIKAWA TAKASHI
KAWANO HIROSHI
IWAKI TSUTOMU

JP7682982A

November 12, 1983

May 07, 1982

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MATSUSHITA ELECTRIC IND CO LTD

H01M50/417; H01M50/489; H01M50/491; (IPC1-7): H01M2/16

Akira Kobiji (2 outside)

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