| abstract |
A process for producing a modified polymer that exhibits low rolling resistance, excellent mechanical properties (e.g., tensile strength), high wet-skid resistance, and excellent wear resistance when vulcanized, a modified polymer obtained by the process, and a rubber composition containing the same. The process includes subjecting an alkali metal active end of a conjugated diene polymer to a modification reaction with an alkoxysilane compound, the conjugated diene polymer being produced by subjecting a diene monomer or a diene monomer and a monomer other than the diene monomer to anionic polymerization in a hydrocarbon solvent using an alkali metal initiator, and subjecting the resulting product to a condensation reaction in the presence of a condensation accelerator that includes a compound of at least one element among the elements of the groups 4A (excluding Ti), 2B, 3B, and 5B of the periodic table. |