For wet tires for competition, a compound that can achieve high wet grip performance, period of time required to exhibit the grip performance, stiffness, durability, and wear resistance at high levels has been demanded. Furthermore, improvement in deterioration of processability due to blending of silica has been also demanded. Therefore, in the present invention, the problems described above are solved by a rubber composition containing at least: a diene rubber, a silica, a silane coupling agent having a mercapto group, a plasticizer, and an oil and/or a resin; from 50 to 200 parts by mass of the silica per 100 parts by mass of the diene rubber and from 2 to 20 mass% of the silane coupling agent having a mercapto group relative to the amount of the silica being blended; and a total amount of the plasticizer and the oil and/or the resin being 60 parts by mass or greater per 100 parts by mass of the diene rubber.
RUBBER COMPOSITION AND PNEUMATIC TIRE USING SAME
KAUTSCHUKZUSAMMENSETZUNG UND LUFTREIFEN DAMIT
COMPOSITION DE CAOUTCHOUC ET PNEU L'UTILISANT
24.07.2019
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE USING SAME
Europäisches Patentamt | 2020
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