While suppressing a decrease in low-temperature performance, performance at ambient temperature, such as wet performance and dry performance, is improved. A rubber composition for a tire tread according to an embodiment includes, per 100 parts by mass of a rubber component containing a styrene-butadiene rubber having a glass transition temperature of −60° C. or less, 70 parts by mass or more of a reinforcing filler containing silica. The rubber composition has, when vulcanized, a storage modulus E′(−20° C.) at a temperature of −20° C. and a storage modulus E′(30° C.) at a temperature of 30° C. such that the ratio between E′(−20° C.) and E′(30° C.) measured under conditions of a frequency of 10 Hz, an initial strain of 10%, and a dynamic strain of ±0.25% satisfies 2.0≤E′(−20° C.)/E′(30° C.)≤3.0.


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    Titel :

    RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE


    Beteiligte:
    TOCHIKA SHINYA (Autor:in)

    Erscheinungsdatum :

    2019-08-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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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