Patent ID: 9056925
Filing Date: 2015-06-16
Classification: B60C,C08C,C08K,C08L

Abstract:
1. A process for producing a modified conjugated diene based polymer, the process comprising a step (a) of reacting a silicon compound with a conjugated diene based polymer having an active end so that the reaction takes places at the active end, the silicon compound having a protected primary amino group in the molecule thereof and a silicon atom to which a hydrocarbyloxy group and a reactive group are bonded, to thereby modify the active end, and a step (b) of performing condensation reaction which involves the group derived from the silicon compound and bonded to the active end of the conjugated diene based polymer, in the presence of a titanium compound serving as a titanium-based condensation-accelerating agent, wherein the protected amino group is capable of being deprotected by hydrolysis to be a primary amino group, and wherein the titanium compound is at least one selected from the group consisting of tetrakis(2-ethyl-1,3-hexanediolato)titanium and titanium di-n-butoxide bis(2,4-pentanedionate).