Patent ID: 8124704

Claim:
A conjugated diene polymer comprising: a conjugated diene-based constituent unit; and a group represented by Formula (I) at both termini of a polymer chain; wherein R 1 denotes a hydrogen atom, a hydrocarbyl group having 1 to 20 carbons, or a substituted hydrocarbyl group having 1 to 20 carbons, X 1 , X 2 , and X 3 independently denote a group represented by Formula (II), a hydroxy group, a hydrocarbyl group, or a substituted hydrocarbyl group, and at least one selected from among X 1 , X 2 , and X 3 is a group represented by Formula (II) or a hydroxy group, wherein R 2 and R 3 independently denote a hydrocarbyl group having 1 to 6 carbons, a substituted hydrocarbyl group having 1 to 6 carbons, a silyl group, or a substituted silyl group, and R 2 and R 3 may be bonded so as to form, together with the N atom, a ring structure.