| abstract |
The problem of the present invention is to provide the rubber composition for tire tread for making processability, wet road performance and resistance to abrasion be further increased compared with conventional level.It is characterized in that, relative to including the weight % of natural rubber 10~30, styrene units content is 30~40 weight % weight % of solution polymerization styrene-butadiene rubber 10~30, the weight % of SBR of emulsion polymerization 80~40 parts by weight of diene series rubber 100, coordinate the aromatic modified parts by weight of terpene resin 1~25, the parts by weight of silica 80~150, the parts by weight of carbon black 5~50 and oil component, and coordinate the alkyl triethoxysilane of 0.1~20 weight % of the weight of the above-mentioned silica alkyl with carbon number 3~20, and the oil-filled composition contained by above-mentioned solution polymerization styrene-butadiene rubber and/or SBR of emulsion polymerization, the total amount W of above-mentioned aromatic modified terpene resin and above-mentioned oil component oil With the weight W of above-mentioned natural rubber NR The ratio between (W oil /W NR ) it is 3.0~4.0. |