Propylene-based copolymer and film made of the same

A propylene-based copolymer is composed of 60 to 90% by weight of Component (A) that is a polymer component whose major structural unit is a structural unit derived from propylene and 10 to 40% by weight of Component (B) that is a propylene-ethylene copolymer component whose content of a structural...

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Hauptverfasser: IKEDA KENJI, KISHIRO SHIGEKI
Format: Patent
Sprache:eng
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Zusammenfassung:A propylene-based copolymer is composed of 60 to 90% by weight of Component (A) that is a polymer component whose major structural unit is a structural unit derived from propylene and 10 to 40% by weight of Component (B) that is a propylene-ethylene copolymer component whose content of a structural unit derived from ethylene is 50 to 80% by weight, wherein the sum total of Component (A) and Component (B) is 100% by weight, wherein the ratio of the intrinsic viscosity of Component (B) ([ ]B) to the intrinsic viscosity of Component (A) ([ ]A)([ ]B/[ ]A) satisfies a formula: 1.3