PROPYLENE POLYMER COMPOSITION, USE THEREOF, AND PROCESS FOR PRODUCTION OF THERMOPLASTIC POLYMER COMPOSITION

The propylene-based polymer composition of the present invention includes 41 to 95 parts by weight of a propylene-based polymer (A) having a Tm measured by DSC of not less than 120°C and not more than 170°C, and 59 to 5 parts by weight (provided that the total of (A) and (B) is 100 parts by weight)...

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Bibliographische Detailangaben
Hauptverfasser: IKENAGA, SHIGENOBU, MARUBAYASHI, HIROMASA, NAGAHASHI, KOUJI, NAKAGAWA, TAKASHI, TOHI, YASUSHI, OKAMOTO, MASAHIKO, MORI, RYOJI
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The propylene-based polymer composition of the present invention includes 41 to 95 parts by weight of a propylene-based polymer (A) having a Tm measured by DSC of not less than 120°C and not more than 170°C, and 59 to 5 parts by weight (provided that the total of (A) and (B) is 100 parts by weight) of a propylene/ethylene/±-olefin copolymer (B) that contains 84.0 to 60.0 mol% of constitutional units derived from propylene, 15.0 to 30.0 mol% of constitutional units derived from ethylene, and 1. 0 to 10.0 mol% of constitutional units derived from an ±-olefin having 4 to 20 carbon atoms and has a B-value of not less than 0.9 and not more than 1.5. This polymer composition is excellent in transparency, low-temperature impact resistance, and mechanical properties (flexibility or rigidity, etc.) and also excellent in heat resistance.