Vehicle tyre, notably a winter tyre, the tread of which comprises a rubber composition that is heat-expandable in the unvulcanized state and expanded in the vulcanized state; in the unvulcanized state, said composition comprises 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 a sodium or potassium (hydrogen) carbonate, between 2 and 20 phr of an acid quaternary ammonium salt, the total content of (hydrogen) carbonate and acid salt being greater than 10 phr, preferably greater than 15 phr. The combined use of the last two compounds, at the recommended high contents, makes it possible to greatly improve the grip of the tyre on melting ice.
PNEUMATIQUE POUR VÉHICULE DONT LA BANDE DE ROULEMENT COMPORTE UNE COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE
VEHICLE TYRE HAVING A TREAD COMPRISING A HEAT-EXPANDABLE RUBBER COMPOSITION
REIFEN FÜR EIN FAHRZEUG MIT EINEM PROFIL MIT EINER WÄRMEEXPANDIERBAREN KAUTSCHUKZUSAMMENSETZUNG
2018-07-04
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 |
Europäisches Patentamt | 2019
|Europäisches Patentamt | 2020
|Europäisches Patentamt | 2020
|Europäisches Patentamt | 2016
|Europäisches Patentamt | 2016
|