The invention relates to a tyre for a vehicle, in particular a winter tyre, in an unvulcanised state, the tread of which comprises a heat expandable rubber composition comprising at least one 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, 5 to 25 phr of a sodium or potassium carbonate or hydrogencarbonate and 2 to 20 phr of an acid salt, the total (hydrogen)carbonate and acid salt content being higher than 10 phr, wherein the acid salt is: either an inorganic polyacid acid salt, the acid salt anion being selected from the group consisting of hydrogensulfates, hydrogensulfides, hydrogensulfites, hydrogenphosphates and dihydrogenphosphates; or an organic polyacid acid salt, the acid salt anion being a carboxylic diacid or triacid monocarboxylate or a carboxylic triacid dicarboxylate. The combined use of this carbonate and this acid salt at the recommended rates greatly enhances the grip of the tyre on melting ice.


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    Title :

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


    Additional title:

    VEHICLE TYRE, THE TREAD OF WHICH COMPRISES A HEAT-EXPANDABLE RUBBER COMPOSITION
    FAHRZEUGREIFEN MIT EINER LAUFFLÄCHE MIT EINER WÄRMEEXPANDIERBAREN KAUTSCHUKZUSAMMENSETZUNG


    Contributors:

    Publication date :

    2016-10-19


    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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    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

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

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    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