Polypropylene for film capacitor, polypropylene sheet for film capacitor, methods for producing same, and uses of same
作者： Satoshi Tamura , Noriko Tan
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摘要: Disclosed are a polypropylene for film capacitor and sheet capacitor, each of which exhibits excellent stretchability when stretched into is capable providing that has high dielectric breakdown voltage small thermal shrinkage. The the suitable comprising film. characterized by being obtained irradiating propylene homopolymer with radiation an absorbed dose 0.1-500 kGy, said having (1) melt flow rate (MFR) within range 1-10 g/10 minutes as determined at 230°C under load 2.16 kg in accordance ASTM D1238, (2) isotactic pentad fraction (mmmm fraction) not less than 94% using 13C-NMR, (3) ash content more 30 ppm completely burnt air, (4) chlorine amount 10 ion chromatography.
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