| 摘要 |
PURPOSE: Provided is a method for producing a microporous separator for lead storage battery which shows low electric resistance and rapid absorption without increasing of the content of organic fillers. CONSTITUTION: The method for producing a microporous separator from high density polyolefin, inorganic filler and plasticizer, is characterized in that at least one nonionic surfactant selected from alkylphenol polyethylene oxide or alkyl polyethylene oxide, and at least one anionic surfactant selected from alkylbenzene sulfone soda, sodium dialkyl sulfosuccinate, or alkyl naphthalene sulfonate are used as additives, or coated on the surface of the separator.
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