POLYPROPYLENE RESIN COMPOSITION FOR FILM FOR CAPACITOR

• Main Authors: TAKAHASHI KUNINOBU, YAJIMA SHINICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a polypropylene resin composition capable of providing a thin and high- rigidity film for a capacitor, and a film for capacitor.SOLUTION: The polypropylene resin composition for a film for a capacitor is provided that contains 5 to 50 wt.% of a polypropylene resin (X) satisfying specific MFR, molecular weight distribution, melt tension, branch index, mm fraction, the number of gels and having a long branch structure and 95 to 50 wt.% of a polypropylene resin (Y) having an MFR of 0.1 to 10 g/10 min., and a film for capacitor thereof is also provided. The polypropylene resin (Y) is preferably a propylene homopolymer.SELECTED DRAWING: None 【課題】薄くて、高剛性を有する、コンデンサー用フィルムを得ることができるポリプロピレン樹脂組成物及びコンデンサー用フィルムを提供すること。【解決手段】特定のＭＦＲ、分子量分布、溶融張力、分岐指数、ｍｍ分率、ゲルの個数を満たす、長鎖分岐構造を有するポリプロピレン樹脂（Ｘ）５〜５０重量％と、ＭＦＲが０．１〜１０ｇ／１０ｍｉｎのポリプロピレン樹脂（Ｙ）９５〜５０重量％とを含むコンデンサー用フィルム用ポリプロピレン樹脂組成物およびそのコンデンサー用フィルム。ポリプロピレン樹脂（Ｙ）はプロピレン単独重合体であることが好ましい。【選択図】なし