PROBLEM TO BE SOLVED: To provide a polyolefin-based rubber composition which enables compression molding and steam vulcanization, has a surface after curing showing slipperiness, prevents lowering of mechanical characteristics, and is excellent in blocking resistance.SOLUTION: A polyolefin-based rubber composition contains: (A) an ethylene-α-olefin-nonconjugated polyene random copolymer of 100 pts.mass; (B) organopolysiloxane of 1-100 pts.mass which is represented by average composition formula (1): RSiO, has 0 or 1 to 3 alkenyl groups in one molecule and a degree of polymerization of 20 or more, where in formula (1), R represents a same or different monovalent hydrocarbon group, and a is a positive number of 1.95 to 2.05; (C) reinforcing silica having a specific surface area of 50 m/g or more by BET method of 10-100 pts.mass with respect to 100 pts.mass of the total of the components (A) and (B); and (D) particles selected from the group consisting of specific organic resin particles, inorganic particles and silicone powder particles of 1-150 pts.mass.SELECTED DRAWING: None

    【課題】本発明は、圧縮成型やスチーム加硫等が可能であり、硬化後の表面が滑り性を示し、且つ、機械的特性の低下がなく、耐ブロッキング性に優れるポリオレフィン系ゴム組成物を提供することを目的とする。【解決手段】(A)エチレン・α−オレフィン・非共役ポリエンランダム共重合体 100質量部(B)下記平均組成式(1)で示される、1分子中に0個又は1〜3個のアルケニル基を有する重合度20以上のオルガノポリシロキサン 1〜100質量部RaSiO(4-a)/2(1)(式中、Rは同一又は異種の1価炭化水素基を示し、aは1.95〜2.05の正数である。)(C)BET法による比表面積が50m2/g以上である補強性シリカ (A),(B)成分の合計100質量部に対し、10〜100質量部(D)特定の有機樹脂粒子、無機粒子及びシリコーンパウダー粒子の群から選ばれる粒子 1〜150質量部を含有してなるポリオレフィン系ゴム組成物。【選択図】なし


    Access

    Download


    Export, share and cite



    Title :

    POLYOLEFIN-BASED RUBBER COMPOSITION


    Additional title:

    ポリオレフィン系ゴム組成物


    Contributors:

    Publication date :

    2018-07-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



    POLYOLEFIN RUBBER COMPOSITION

    MORI NAOZUMI / URATANI TAKESHI / KISHIDA HIDEKI et al. | European Patent Office | 2018

    Free access

    POLYOLEFIN RUBBER COMPOSITION

    MORI NAOZUMI / URATANI TAKESHI / KISHIDA HIDEKI et al. | European Patent Office | 2020

    Free access

    COMPOSITION INCLUDING SILANE-GRAFTED POLYOLEFIN

    GOPALAN KRISHNAMACHARI / LENHART ROBERT J / JI GENDING | European Patent Office | 2019

    Free access

    COMPOSITION INCLUDING SILANE-GRAFTED POLYOLEFIN

    GOPALAN KRISHNAMACHARI / LENHART ROBERT J / JI GENDING | European Patent Office | 2019

    Free access

    Composition including silane-grafted polyolefin

    GOPALAN KRISHNAMACHARI / LENHART ROBERT J / JI GENDING | European Patent Office | 2020

    Free access