Patent ID: 9695256
Date: 2017-07-04
CPC Classifications: B60C,C07F,C08C,C08F,C08K,C08L

Claim:
1. A method of preparing a modified conjugated diene-based polymer, comprising: (a) polymerizing a conjugated diene monomer, or a conjugated diene monomer and an aromatic vinyl monomer, using a compound represented by Chemical Formula 1 below, in presence of a solvent, thus obtaining an active polymer having a metal end; and (b) modifying the active polymer with any one of compounds represented by Chemical Formula 3 to 6 below: in Chemical Formula 1, R is a nitrogen-containing group, X is a hydrocarbon obtained by polymerization of the conjugated diene monomer or the aromatic vinyl monomer, n is an integer of 1˜10, and M is an alkali metal; and in Chemical Formulas 3 and 4, a and c are each independently 1, or 2,