To provide a rubber composition for a tire, the rubber composition reduces rolling resistance of a pneumatic tire and enhances wet grip performance, performance on snow, and processability equal to or beyond conventional levels. The rubber composition includes a total of 45 to 65 parts by mass of an aromatic modified terpene resin having a softening point of 100°C or higher and an oil per 100 parts by mass of a rubber component formed from 20 to 40 mass% of a butadiene rubber and from 80 to 60 mass% of another diene rubber containing an emulsion-polymerized styrene-butadiene rubber E-SBR1 having a bonded styrene content of 30 mass% or less and an emulsion-polymerized styrene-butadiene rubber E-SBR2 having a bonded styrene content of 35 mass% or greater; an amount of the E-SBR1 being from 85 to 92 mass% per 100 mass% of the emulsion-polymerized styrene-butadiene rubber; and a ratio (WB/WT) of the compounded amount of the butadiene rubber (WB) to the compounded amount of the aromatic modified terpene resin (WT) being from 0.5 to 3.0.
RUBBER COMPOSITION FOR TIRES
KAUTSCHUKZUSAMMENSETZUNG FÜR REIFEN
COMPOSITION DE CAOUTCHOUC POUR PNEUS
2020-09-23
Patent
Electronic Resource
English
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
RUBBER COMPOSITION FOR TIRES, VULCANIZED RUBBER COMPOSITION FOR TIRES, AND TIRE
European Patent Office | 2023
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