To provide a thermoplastic elastomer composition excellent in high temperature strength and low temperature impact resistance.SOLUTION: There is provided a thermoplastic elastomer composition comprising the following components (A)to (D). Component (A): a propylene-based polymer comprising a propylene-based polymer component (a1) having a propylene unit content of 90 to 100 mass% and an ethylene propylene copolymer component (a2) having an ethylene unit content of 30 to 70 mass% in which the content of the component (a1) is more than 80 mass% and 100 mass% or less. Component (B): a propylene-based polymer comprising a propylene-based polymer component (b1) having a propylene unit content of 90 to 100 mass% and an ethylene propylene copolymer component (b2) having an ethylene unit content of 30 to 70 mass% in which the content of the component (b1) is 30 to 80 mass%. Component (C): an olefin-based block copolymer of an ethylene polymer block (c1)/an ethylene-α-olefin copolymer block (c2). Component (D): a styrene-conjugated diene block copolymer.SELECTED DRAWING: None
【課題】高温強度と低温耐衝撃性に優れ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)〜(D)を含有する熱可塑性エラストマー組成物。成分(A):プロピレン単位含有率90〜100質量%のプロピレン系重合体成分(a1)と、エチレン単位含有率30〜70質量%のエチレン・プロピレン共重合体成分(a2)からなり、成分(a1)が80質量%を超え100質量%以下のプロピレン系重合体成分(B):プロピレン単位含有率90〜100質量%のプロピレン系重合体成分(b1)とエチレン単位含有率30〜70質量%のエチレン・プロピレン共重合体成分(b2)からなり、成分(b1)が30〜80質量%のプロピレン系重合体成分(C):エチレン重合体ブロック(c1)/エチレン・α−オレフィン共重合体ブロック(c2)のオレフィン系ブロック共重合体成分(D):スチレン・共役ジエンブロック共重合体【選択図】なし
THERMOPLASTIC ELASTOMER COMPOSITION AND AIR BAG HOUSING COVER
熱可塑性エラストマー組成物及びエアバッグ収納カバー
2021-09-27
Patent
Electronic Resource
Japanese
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