| 摘要 |
PURPOSE:To provide a rubber composition having high hardness and high modulus, and useful for tire and industrial product having low heat-generating chracteristics, especially excellent blow-out resistance, by adding sulfur to a mixture of 1,2-polybutadiene and a rubber. CONSTITUTION:The title tubber composition composed of (A) 10-50 parts by weight of a 1,2-polybutadiene having a vinyl content of >=70%, crystallinity of 5-40%, and intrinsic viscosity of >=0.7 (in toluene at 30 deg.C), (B) 90-50 parts by weight of natural rubber, polyisoprene rubber, styrene-butadiene copolymer rubber and/or polybutadiene rubber, and (C) 3-10 parts by weight of sulfur. |
