To provide a thermoplastic resin composition from which an inner liner for a pneumatic tire can be produced, the inner liner being excellent in gas barrier property and having sufficient low temperature durability.SOLUTION: The thermoplastic resin composition for a tire inner liner is provided that is composed of: a matrix phase including an ethylene-butanediol-vinyl alcohol copolymer or a butanediol-vinyl alcohol copolymer (A) and an ethylene-vinyl alcohol copolymer (B) of which the ethylene unit ratio is 29 mol% or more; and a dispersion phase including a halogenated isomonoolefin-paraalkylstyrene copolymer (C) and an acid modified elastomer (D), wherein a weight ratio (A/B) of the ethylene-butanediol-vinyl alcohol copolymer or the butanediol-vinyl alcohol copolymer (A) to the ethylene-vinyl alcohol copolymer (B) of which the ethylene unit ratio is 29 mol% or more is 2/98 to 40/60.SELECTED DRAWING: None

    【課題】ガスバリア性に優れ、かつ十分な低温耐久性を有する空気入りタイヤ用インナーライナーを製造することができる熱可塑性樹脂組成物を提供する。【解決手段】エチレン−ブテンジオール−ビニルアルコール共重合体またはブテンジオール−ビニルアルコール共重合体(A)およびエチレン単位比率が29モル%以上のエチレン−ビニルアルコール共重合体(B)を含むマトリックス相とハロゲン化イソモノオレフィン−パラアルキルスチレン共重合体(C)および酸変性エラストマー(D)を含む分散相とからなるタイヤインナーライナー用熱可塑性樹脂組成物であって、エチレン−ブテンジオール−ビニルアルコール共重合体またはブテンジオール−ビニルアルコール共重合体(A)とエチレン単位比率が29モル%以上のエチレン−ビニルアルコール共重合体(B)の重量比(A/B)が2/98〜40/60であることを特徴とする。【選択図】なし


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    Title :

    THERMOPLASTIC RESIN COMPOSITION FOR TIRE INNER LINER


    Additional title:

    タイヤインナーライナー用熱可塑性樹脂組成物


    Contributors:
    SATO SHUN (author)

    Publication date :

    2019-02-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / 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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