| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for a tire tread, which is capable of decreasing the hardness (Hd) and improving the gripping performance of the tire tread at a low temperature, especially suitable for a racing tread etc. SOLUTION: The rubber composition for the tire tread is obtained by compounding≥80 pts.mass carbon black having an iodine adsorption (IA) of≥120 mg/g and a dibutyl phthalate oil absorption (DBP) of≥100 ml/100 g with 100 pts.mass rubber component containing≥30 pts.mass natural rubber, wherein the natural rubber is obtained by solidifying and drying a natural rubber latex and comprises a viscosity stabilizer. COPYRIGHT: (C)2006,JPO&NCIPI
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