A rubber composition for tires comprises: per 100 parts by weight of diene rubber containing from 5 to 50 wt. % of terminally modified S-SBR, from 2 to 50 parts by weight of an aromatic modified terpene resin having a softening point of 100° C. or higher. A total content of 60 to 130 parts by weight of two types of silica, that is silica X and silica Y. A functional group of the modified S-SBR has reactivity with a silanol group. A proportion of the silica relative to a total amount of a reinforcing filler containing the silica X, the silica Y, and an optionally compounded carbon black is 85 wt. % or greater. A nitrogen adsorption specific surface area of the silica X is 140 m2/g or greater; a nitrogen adsorption specific surface area of the silica Y is greater than 100 m2/g and less than 140 m2/g.
Tire rubber composite and pneumatic tire
2016-03-15
Patent
Electronic Resource
English
IPC: | C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |