Patent ID: 9365703
Filing Date: 2016-06-14
CPC Classification: B60C,C08K,C08L

Claim Text:
1. A rubber composition for a tread, which comprises, based on 100% by mass of a rubber component, 40 to 75% by mass of butadiene rubber comprising at least one member selected from the group consisting of a butadiene rubber synthesized with a rare earth catalyst and a modified butadiene rubber for silica, and 25 to 55% by mass of styrene butadiene rubber which includes a modified styrene butadiene rubber for silica; and comprises, per 100 parts by mass of the rubber component, 40 to 120 parts by mass of a silica having a nitrogen adsorption specific surface area of 160 to 270 m and where the modified styrene butadiene rubber for silica has been modified with a compound represented by formula (1):  wherein R