| 摘要 |
PURPOSE:To obtain a rubber composition having excellent impact resilience, abrasion resistance and tensile strength and useful for tire tread, tire sidewall, etc., by compounding a natural rubber and/or synthetic rubber with a specific carbon black. CONSTITUTION:The objective rubber composition can be produced by compounding (A) 100pts.wt. of a natural rubber and/or synthetic rubber (e.g. styrene-butadiene copolymer rubber, polybutadiene rubber, etc.) with (B) 20-200 pts.wt. of carbon black having an iodine absorption (IA) of 60-70, a ratio of nitrogen specific surface area (N2SA) to IA (N2SA/IA) of 1.18-1.4 an a half value width D50(Dst) of particle size distribution of 70-130mmu and, if necessary, (C) a vulcanization agent (e.g. sulfur), a vulcanization accelerator, a filler, etc.
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