FINE POROUS FILM, METHOD FOR PRODUCING FINE POROUS FILM, AND SEPARATOR FOR BATTERY

PROBLEM TO BE SOLVED: To provide a fine porous film having a high film rupture temperature and good balance between porosity and air permeability. SOLUTION: The fine porous film comprises a thermoplastic resin composition containing (a) 100 pts.mass of a polyethylene resin and (b) 5-90 pts.mass of a...

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Bibliographische Detailangaben
Hauptverfasser:	NADA JUN, KAMO HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ELECTRICITY GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a fine porous film having a high film rupture temperature and good balance between porosity and air permeability. SOLUTION: The fine porous film comprises a thermoplastic resin composition containing (a) 100 pts.mass of a polyethylene resin and (b) 5-90 pts.mass of a polyphenylene ether-based resin. The fine porous film has a sea-island structure in which the polyethylene resin is the sea part and the polyphenylene ether-based resin is the island part and has an air permeability of 10 to 5,000 s/100 cc. COPYRIGHT: (C)2011,JPO&INPIT