| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for a tread capable of improving high mileage, wet grip performance and wear resistance, and a pneumatic tire using the composition.SOLUTION: The rubber composition for a tread comprises a rubber component, silica, and a polyalkylene glycol having a branched structure. In 100 mass% of the rubber component, the following conjugate diene polymer is included by 5 mass% or more: the conjugate diene polymer has a monomer unit based on a conjugate diene, a monomer unit based on a compound expressed by a formula (1), and a monomer unit based on a compound expressed by a formula (2), and is modified with a compound (G). The composition contains, with respect to 100 parts by mass of the rubber composition, 5 to 150 parts by mass of the silica, and 0.1 to 10 parts by mass of the polyalkylene glycol having a branched structure. The compound (G) is at least one compound selected from a compound group consisting of compounds having an amino group and a carbonyl group which may have a substituent and compounds having an amino group and a thiocarbonyl group which may have a substituent. |
