Vehicle tyre, notably winter tyre, the tread of which contains a rubber composition that is thermally expandable in the non-vulcanized state, expanded in the vulcanized state; in the non-vulcanized state, said composition contains a diene elastomer such as natural rubber and/or a polybutadiene, more than 50 phr of a reinforcing filler such as silica and/or carbon black, between 5 and 25 phr of microparticles of a sodium or potassium (hydrogen) carbonate having a median particle size by weight of between 1 and 50 µm, between 2 and 20 phr of a carboxylic acid the melting point of which is between 60°C and 220°C, such as citric acid or stearic acid for example, the total (hydrogen) carbonate and carboxylic acid content being higher than 10 phr, preferably higher than 15 phr. The combined use of the latter two compounds, at the recommended high contents, allows a great improvement to the grip of the tyre on melting ice without penalizing the rate at which this thermally expandable rubber composition is cured.


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    Title :

    COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE ET PNEUMATIQUE POUR VEHICULE DONT LA BANDE DE ROULEMENT COMPORTE UNE TELLE COMPOSITION


    Additional title:

    THERMOEXPANSIBLE RUBBER COMPOSITION AND VEHICLE PNEUMATIC TIRE
    THERMISCH EXPANDIERBARE KAUTSCHUKZUSAMMENSETZUNG UND FAHRZEUGLUFTREIFEN MIT EINER SOLCHEN MISCHUNG


    Contributors:

    Publication date :

    2016-05-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    French


    Classification :

    IPC:    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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen




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    MAESAKA MASAYUKI / PAGANO SALVATORE | European Patent Office | 2019

    Free access

    PNEUMATIQUE POUR VEHICULE DONT LA BANDE DE ROULEMENT COMPORTE UNE COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE

    SHIRAISHI YU / CUSCITO OLIVIA | European Patent Office | 2020

    Free access

    PNEUMATIQUE POUR VÉHICULE DONT LA BANDE DE ROULEMENT COMPORTE UNE COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE

    PAGANO SALVATORE / OCHIAI CHIKA | European Patent Office | 2018

    Free access

    PNEUMATIQUE POUR VEHICULE DONT LA BANDE DE ROULEMENT COMPORTE UNE COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE

    OCHIAI CHIKA / PAGANO SALVATORE | European Patent Office | 2020

    Free access