Microporous film, manufacturing method for said film, and use for said film as battery separator film

The present invention relates to a microporous film, which includes low melting point polypropylene that is a polypropylene homopolymer or copolymer having an MFR of at least 2.0102, Tm in the range 85.0 DEG C to 130 DEG C, and Te-Tm no more than 10 DEG C, a manufacturing method for the film, and a...

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Bibliographische Detailangaben
Hauptverfasser:	CROWTHER DONNA J, KONO KOICHI, GONG GANGCONG, BRANT PATRICK, SHI YUANYI
Format:	Patent
Sprache:	chi ; 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 ELECTRICITY GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 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:	The present invention relates to a microporous film, which includes low melting point polypropylene that is a polypropylene homopolymer or copolymer having an MFR of at least 2.0102, Tm in the range 85.0 DEG C to 130 DEG C, and Te-Tm no more than 10 DEG C, a manufacturing method for the film, and a use for the film as a battery separator film in a lithium ion secondary battery. The present invention can obtain a microporous film having a superior balance of gas permeability, shut-down temperature, and puncture strength.