| abstract |
A modified conjugated diene-based polymer containing:having a weight average molecular weight of 20×104 or more and 300×104 or less,having a star-branched structure with a conjugated diene-based polymer chain bonded to a modifier residue,wherein the modifier residue has at least 4 silicon atoms, and alkoxy groups and/or hydroxyl groups andthe conjugated diene-based polymer chain is bonded to the silicon atom,wherein the number of alkoxy groups and/or hydroxyl groups in the modifier residue is larger than the number of the silicon atoms on average. |