RUBBER COMPOSITION FOR TIRES AND PNEUMATIC TIRE
Abstract:
Provided is a pneumatic tire that provides a balanced improvement of tensile strength and fuel economy. Included is a rubber composition for tires containing: a rubber component including an aromatic vinyl-conjugated diene copolymer that contains aromatic vinyl units derived from an aromatic vinyl compound and conjugated diene units derived from a conjugated diene compound; carbon black; and silica, the copolymer containing at least 80% of isolated aromatic vinyl units based on the total aromatic vinyl units, the copolymer having a ΔTg of more than 10° C. but less than 20° C. as determined by DSC, the rubber component including, based on 100% by mass thereof, 10% by mass or more of the copolymer, the rubber composition containing 10 parts by mass or more of the silica per 100 parts by mass of the rubber component.
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