The present invention provides: a rubber composition for a tire tread for winter which is excellent in wet performance and performance on icy and snowy roads when used in a tire; and a pneumatic tire for winter including the rubber composition. The present invention relates to a rubber composition for a tire tread for winter, containing: a conjugated diene rubber containing 30 mass% or greater of a specific conjugated diene rubber; a plasticizer containing a specific plasticizer; silica; and a silane coupling agent, a content of the specific plasticizer being 5 parts by mass or greater per 100 parts by mass of the conjugated diene rubber; a content of the silica being 30 parts by mass or greater per 100 parts by mass of the conjugated diene rubber; a content of the silane coupling agent being from 3 to 30 mass% with respect to the content of the silica; the specific plasticizer being a plasticizer having a glass transition temperature of -50°C or lower; and an average glass transition temperature of the conjugated diene rubber and the plasticizer being lower than -50°C.


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    Title :

    RUBBER COMPOSITION FOR TIRE TREAD FOR WINTER AND PNEUMATIC TIRE FOR WINTER


    Additional title:

    KAUTSCHUKMISCHUNG FÜR WINTERREIFENPROFIL UND LUFTREIFEN FÜR DEN WINTER
    COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT DE PNEU POUR L'HIVER, ET PNEU HIVER


    Contributors:

    Publication date :

    2021-03-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / 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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