Method of producing a modified conjugated diene polymer, the tire comprising the composition and the composition containing the polymer

摘要

The present invention provides a time one subjected to vulcanization treatment to a vulcanized rubber, the wet skid properties, low hysteresis loss property, abrasion resistance, breaking strength and useful conjugated diene-based polymer as the material for the tread of the excellent Thai balance of rigidity, and a method of producing and that one of the objectives. According to the invention, by a method for producing a modified conjugated diene-based polymer having a shift converter in the molecule, using an alkali metal-based initiator or an alkaline earth metal-based initiator in a hydrocarbon solvent, and a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound the step of obtaining a conjugated diene-based polymer and, with the active terminal of the polymer, the modifying agent as a glycidyl having glycidyl group bonded to the tertiary amino group in the 2 or more and the group of three or more in a molecule dill amino group-containing low molecular weight compound, and the a step of reacting at least dimeric oligomers of low molecular weight compound, 75 to 95% by mass of the low molecular weight compound with respect to the amount of the modifying agent, the modified conjugated diene polymer which comprises the step of reacting by using the oligomer of 25 to 5% by weight It provides a method of manufacturing. ; Modified conjugated diene polymer, a shift converter, a glycidyl group-containing low molecular weight compound, a vulcanized rubber