The present invention provides a rubber composition for a sidewall, which improves fuel economy, handling stability, tensile strength at break, elongation at break, and processability in a balanced manner, and which can also suppress the occurrence of broken spews during demolding of a resulting tire; and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a sidewall, comprising a rubber component having: a combined amount of a 1,2-syndiotactic polybutadiene crystal-containing butadiene rubber and a butadiene rubber synthesized in the presence of a rare earth catalyst of 5 to 60% by mass; an amount of a terminally modified butadiene rubber of 7 to 60% by mass; and an amount of an isoprene-based rubber of 20 to 70% by mass, each based on 100% by mass of the rubber component, wherein the rubber composition has: a combined amount of a carbon black having a nitrogen adsorption specific surface area of 25 to 120 m 2 /g and a silica having a nitrogen adsorption specific surface area of 70 to 250 m 2 /g of 20 to 40 parts by mass; and an amount of zinc oxide of 3.6 to 16 parts by mass, each per 100 parts by mass of the rubber component.


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    Titel :

    RUBBER COMPOSITION FOR SIDE WALL AND PNEUMATIC TIRE


    Weitere Titelangaben:

    KAUTSCHUKZUSAMMENSETZUNG FÜR SEITENWAND UND LUFTREIFEN
    COMPOSITION À BASE DE CAOUTCHOUC POUR FLANC ET PNEU


    Beteiligte:

    Erscheinungsdatum :

    2016-09-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08J Verarbeitung , WORKING-UP / 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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