The present invention provides a rubber composition for tires that provides a balanced improvement of grip performance, fuel economy, and abrasion resistance. Included is a rubber composition for tires, containing a rubber component and a terpene-based resin, the rubber component including, based on 100% by mass thereof, 5-100% by mass of styrene butadiene rubber and 0-80% by mass of polybutadiene rubber, with a combined amount of the styrene butadiene rubber and the polybutadiene rubber of 80% by mass or more, the terpene-based resin having a softening point of 70-150°C, an α-pinene unit content of 65-100% by mass, a β-pinene unit content of 0-35% by mass, and a limonene unit content of 10% by mass or lower, the rubber composition containing, per 100 parts by mass of the rubber component, 0-500 parts by mass of silica and 0.1-100 parts by mass of the terpene-based resin.
RUBBER COMPOSITION FOR TIRES AND PNEUMATIC TIRE
KAUTSCHUKZUSAMMENSETZUNG FÜR REIFEN UND LUFTREIFEN
COMPOSITION DE CAOUTCHOUC POUR PNEUS ET PNEU
2021-02-17
Patent
Electronic Resource
English
IPC: | C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / B60C VEHICLE TYRES , Fahrzeugreifen / 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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