| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber composition having excellent low-exothermic property and high strength together, and a pneumatic tire produced using the rubber composition. Ž<P>SOLUTION: The rubber composition contains a rubber component and 10-150 pts.mass of silica per 100 pts.mass of the rubber component, and the rubber component contains a butadiene rubber modified by a compound represented by formula (1): wherein, R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP>are the same or different and represent alkyl, alkoxy, silyloxy, acetal, carboxy, mercapto, or a derivative thereof; R<SP>4</SP>and R<SP>5</SP>are the same or different and represent hydrogen or alkyl; and n represents an integer. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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