Process for production of modified conjugated diene polymers, modified conjugated diene polymers produced by the process, rubber compositions, and tires

摘要: The invention provides a process for producing modified conjugated diene based polymer which attains favorable interaction between rubber component and carbon black and/or silica, thereby improving dispersibility of the fillers, exhibits excellent properties such as heat-buildup-suppressing performance, fracture characteristics, wear resistance; produced through process; composition containing polymer; tire from exhibiting above properties. includes step (a) reacting silicon compound with having an active end so that reaction takes place at end, protected primary amino group in molecule thereof bi-functional atom to hydrocarbyloxy reactive are bonded, modify (b) performing condensation involves atom, presence titanium serving titanium-based condensation-accelerating agent.