| abstract |
The present invention provides rubber composition for tire and the pneumatic tire including said composition, the rubber composition can also provide the adhesiveness and electric conductivity to fiber cord simultaneously even if using cheap conductive black, and the balance for being achieved in electric conductivity, control stability, fuel economy, elongation at break, the adhesiveness to fiber cord, processability and tyre last is improved.Relative to the rubber components of 100 mass parts, the composition includes：Calculated with the net sulfur content in sulphur, the iron content of 1.0~3.5 mass parts is below 30ppm sulphur；And 0.5~15 the dibutyl phthalate oil absorptions of mass parts be more than 300ml/100g and conductive black that iron content is more than 60ppm, wherein, relative to the rubber components of 100 mass parts, total net sulfur content of rubber composition is 1.0~6.0 mass parts, and its specific insulation is 1.0 × 10 8 Below Ω cm. |