| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition by which both steering stability and durability can be obtained when it is applied to the tread rubber of a tire, and to provide a pneumatic tire to which the rubber composition is applied. SOLUTION: The rubber composition comprises 100 pts.mass of a rubber component containing a polyrotaxane or a crosslinked polyrotaxane and 10 to 200 pts.mass of a liquid styrene-butadiene copolymer having an average molecular weight in terms of polystyrene measured by gel permeation chromatography of 5,000 to 200,000. COPYRIGHT: (C)2009,JPO&INPIT
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