| abstract |
(57) [Summary] [Problem] When any of carbon black, silica, a combination of silica and carbon black, or a carbon-silica dual phase filler (carbon-silica double phase filler) is blended as a reinforcing agent. Also, when vulcanized to give a vulcanized rubber, it has excellent balance of wet skid characteristics, low hysteresis loss, abrasion resistance and fracture strength, and also has excellent workability, low fuel consumption tire, large size Provided are an oil-extended rubber useful as a tread material for tires and high-performance tires, and a rubber composition containing the same. (A) The content of the bound amino group is 0.0025. Amino group-containing conjugated diolefin-aromatic vinyl compound-based copolymer rubber 10 to 0.20 mmol / g polymer An oil-extended rubber comprising 0 parts by weight and (B) 10 to 100 parts by weight of an extension oil. |