| 摘要 |
PROBLEM TO BE SOLVED: To provide: a method for producing a conjugated diene-based rubber for providing a rubber crosslinked product having low heat build-up property and excellent wet grip performance; and a tire using the same.SOLUTION: There is provided a method for producing a conjugated diene-based rubber, which comprises the steps of: polymerizing a monomer mixture containing an isoprene monomer or isoprene and an aromatic vinyl monomer by using a polymerization initiator in an inert solvent to form a polymer block (A) having an active terminal; mixing the polymer block (A) having an active terminal with a monomer mixture containing 1,3-butadiene or 1,3-butadiene and an aromatic vinyl monomer, followed by continuing the polymerization to obtain a conjugated diene-based block copolymer chain having an active terminal which has the polymer block (A) and a polymer block (B); and reacting the active terminal of the conjugated diene-based block copolymer chain having an active terminal with a compound containing an alkoxysilyl group and/or a halogenated silyl group and hetero atoms (N, O, S and Si).SELECTED DRAWING: None |
