The invention relates to a tyre for a vehicle, in particular a winter tyre, the tread of which comprises a rubber composition that is heat expandable in the unvulcanised state and expanded in the vulcanised state. In the unvulcanised state, the composition comprises at least one diene elastomer, such as natural rubber and/or a polybutadiene, more than 50 phr of a non-black reinforcing filler, such as silica, optionally less than 3 phr carbon black, 2 to 25 phr of an expansion agent, such as potassium or sodium (hydrogen) carbonate, 2 to 25 phr of a hot-melt compound having a melting temperature between 60° and 220°C, such as citric acid, and 5 to 50 phr of a photocrosslinkable liquid polymer resin, such as a poly(butadiene-acrylate) or poly(butadiene-methacrylate) resin. The combination of these different compounds at the recommended levels greatly enhances tyre grip on ice.
BANDAGE POUR VEHICULE DONT LA BANDE DE ROULEMENT COMPORTE UNE COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE
TYRE FOR A VEHICLE, HAVING A TREAD COMPRISING A HEAT-EXPANDABLE RUBBER COMPOSITION
REIFEN FÜR EIN FAHRZEUG MIT EINEM PROFIL MIT EINER WÄRMEEXPANDIERBAREN KAUTSCHUKZUSAMMENSETZUNG
2016-12-14
Patent
Elektronische Ressource
Französisch
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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