A rubber composition is disclosed comprising a blend of, based on parts by weight per 100 parts by weight rubber (phr), where the term rubber excludes syndiotactic polybutadiene polymer: (A) a polymer alloy comprising 2 to 50 parts by weight of a dispersion of micro sized syndiotactic polybutadiene domains comprising filaments thereof, preferably primarily of filaments thereof, in 98 to 50 parts by weight cis 1,4-polyisoprene rubber; and (B) 100 phr of sulfur curable diene-based elastomers comprising cis 1,4-polyisoprene rubber, preferably the cis 1,4-polyisoprene rubber, and at least one additional diene-based elastomer; wherein the rubber composition comprises the alloy in a sufficient quantity to provide from 2 to 50 phr of the filamentary syndiotactic polybutadiene, and (C) 0 to 150 phr of a reinforcing filler comprising: (1) carbon black, or (2) a combination of silica or precipitated silica and carbon black. The rubber composition may be used in a tire. Also, a process of manufacturing such a rubber composition is disclosed.


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    Title :

    Preparation of rubber compositions containing syndiotactic polybutadiene filament and rubber composition and tire


    Additional title:

    Herstellung von Kautschukzusammensetzungen enthaltend syndiotaktisches Polybutadien und Kautschukzusammensetzung und Reifen
    Préparation de compositions de caoutchouc contenant un filament de polybutadiène syndiotactique et composition de caoutchouc et pneu


    Contributors:

    Publication date :

    2015-11-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



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