Patent ID: 8334339

Claim:
A conjugated diene-based polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2), in which at least one end of the polymer is modified with the following compound (G): V 1 -S 1 (11) wherein V 1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S 1 represents a substituted silyl group; V 2 -A 2 (2) wherein V 2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A 2 represents a substituted amino group, or a nitrogen-containing heterocyclic group; Compound (G): at least one kind of compound selected from the compound group consisting of a compound having an amino group optionally having a substituent and a carbonyl group, and a compound having an amino group optionally having a substituent and a thiocarbonyl group.