To provide a thermoplastic elastomer composition which enables excellent molding that is excellent in designability while maintaining low temperature impact resistance.SOLUTION: A thermoplastic elastomer composition contains the following components (A) to (C), wherein a die swell ratio (test temperature 210°C, and shear rate of 243/s) in capillary rheometer (JIS K 7199) is 1.10 or more, glossiness when a test piece for glossiness measurement composed of the thermoplastic elastomer composition is measured at an incident angle of 60° according to ISO 2813 is 50% or less, and a bending modulus of elasticity when a test piece for bending modulus of elasticity measurement composed of the thermoplastic elastomer composition is measured according to ISO 178 (2010) is 100-700 MPa. Component (A): propylene-based block copolymer, component (B): ethylene-α-olefin copolymer having α-olefin having 4 or more carbon atoms, and component (C): ethylene-propylene-non-conjugated diene copolymer.SELECTED DRAWING: None

    【課題】低温耐衝撃性を維持しながら、意匠性に優れた成形品を可能とする熱可塑性エラストマー組成物を提供する。【解決手段】下記成分(A)~(C)を含有する熱可塑性エラストマー組成物であって、キャピラリーレオメーター(JIS K7199)におけるダイスウェル比(試験温度210℃、せん断速度243/s)が1.10以上であり、該熱可塑性エラストマー組成物よりなる光沢測定用試験片についてISO 2813に従って入射角60°で測定した光沢度が50%以下であり、かつ該熱可塑性エラストマー組成物よりなる曲げ弾性率測定用試験片についてISO 178(2010年)に従って測定した曲げ弾性率が100~700MPaである、熱可塑性エラストマー組成物。成分(A):プロピレン系ブロック共重合体成分(B):α-オレフィンの炭素数が4以上であるエチレン・α-オレフィン共重合体成分(C):エチレン・プロピレン・非共役ジエン共重合体【選択図】なし


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    Titel :

    THERMOPLASTIC ELASTOMER COMPOSITION, INJECTION MOLDING, AND AIR BAG STORAGE COVER


    Weitere Titelangaben:

    熱可塑性エラストマー組成物、射出成形品及びエアバッグ収納カバー


    Beteiligte:
    MIKAMI JUNYA (Autor:in)

    Erscheinungsdatum :

    23.08.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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