| 摘要 |
<p>An oil-extended rubber which comprises a conjugated diene rubber having a specific amount of isoprene units and an extender oil incorporated in the rubber, characterized in that the rubber is one obtained by polymerizing a monomer mixture comprising 1,3-butadiene and an aromatic vinyl monomer in a hydrocarbon solvent with the aid of an organic active metal as an initiator, subsequently adding isoprene thereto, polymerizing the resultant mixture to obtain a polymer having an active end, and reacting the polymer with a coupling agent; and a rubber composition containing the oil-extended rubber. The composition is suitable for use as the tread of a fuel-saving tire.</p> |
