PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer composition for an air bag housing cover that is excellent in mold appearance, low-temperature impact resistance and flexural moduli.SOLUTION: A thermoplastic elastomer composition is obtained by applying a dynamic heat treatment to a mixture containing the following component (A) and component (B), and component (C) and component (D). The component (B) is preferably, a saturated ethylene-α-olefin copolymer, or especially preferably, an ethylene-1-butene copolymer rubber. Component (A): a polypropylene block copolymer with an ethylene unit content of 5-50 mass%. Component (B): an ethylene-α-olefin copolymer. Component (C): an organic peroxide. Component (D): a crosslinking aid.SELECTED DRAWING: None

    【課題】成形外観、低温耐衝撃性及び曲げ弾性率に優れたエアバッグ収納カバー用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)及び成分(B)と、成分(C)及び成分(D)を含む混合物の動的熱処理物である熱可塑性エラストマー組成物。成分(B)は、特に飽和エチレン・α−オレフィン共重合体、とりわけエチレン・1−ブテン共重合体ゴムが好ましい。成分(A):エチレン単位の含有量が5〜50質量%のポリプロピレンブロック共重合体成分(B):エチレン・α−オレフィン共重合体成分(C):有機過酸化物成分(D):架橋助剤【選択図】なし


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    Title :

    THERMOPLASTIC ELASTOMER COMPOSITION


    Additional title:

    熱可塑性エラストマー組成物


    Contributors:
    SANO JIRO (author)

    Publication date :

    2018-09-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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