| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for bead apex, improving processability and velocity dependence of steering stability, and reducing a cost while maintaining hardness and the steering stability. SOLUTION: The rubber composition for the bead apex contains 40-140 pts.wt. calcium carbonate based on 100 pts.wt. rubber component. The tire having the bead apex using the composition is also provided. COPYRIGHT: (C)2008,JPO&INPIT
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