| 摘要 |
Rubber composition comprising 100 parts by weight of a base rubber mixed with 30 to 100 parts by weight of a carbon black, of the hard carbon black category, which has a nitrogen absorption specific surface N2SA of 58 to 139 m<2>/g a DBP absorption value of 90 to 150 ml/100 g and which has selective characteristics such that the intra-aggregate void dimension Dp nm, measured by mercury porosimetry, is equal to or greater than a value calculated by the formula [-0.22 x (N2SA) + 60.8].
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