Japan Polyethylene Corporation

Kazushi Kodama

Yoshiyuki Ishihama

Masaru Aoki

Kenji Iiba

Hiroto Hayashi

Ryotaro Harada

[Problem] To provide an ethylene-&#x3b1;-olefin copolymer that is highly effective in improving the molding properties of polyolefin resins, improving the balance between impact strength and stiffness, and improving transparency. [Solution] Provided is an ethylene-&#x3b1;-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

Ethylene-&#x3b1;-olefin copolymer and olefin resin composition

[Problem] To provide an ethylene-&#x3b1;-olefin copolymer that is highly effective in improving the molding properties of polyolefin resins and at the same time highly effective improving the balance between impact strength and stiffness. [Solution] Provided is an ethylene-&#x3b1;-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

[Problem] To provide an ethylene-&#x3b1;-olefin copolymer having high mechanical strength and good molding properties. [Solution] Provided is an ethylene-&#x3b1;-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

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Kanagawa, Japan

Kazushi Kodama