MODIFIED CONJUGATED DIENE POLYMER, METHOD FOR PREPARING SAME, AND RUBBER COMPOSITION CONTAINING SAME

摘要

Disclosed is a method of preparing a modified conjugated diene-based polymer, including (a) polymerizing a conjugated diene monomer, or a conjugated diene monomer and an aromatic vinyl monomer, using the compound represented by Chemical Formula 1 in the presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end, and (b) coupling or reacting the active polymer with the compound represented by Chemical Formula 2.

主权项

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 with a compound represented by Chemical Formula 1 below using a hydrocarbon solvent, thus forming an active polymer having an alkali metal end; and (b) coupling or reacting the active polymer with a compound represented by Chemical Formula 2 below: in Chemical Formula 1, R is a nitrogen-containing group, X is a hydrocarbon obtained by polymerizing a conjugated diene monomer or an aromatic vinyl monomer, n is an integer of 1 to 10, and M is an alkali metal; and in Chemical Formula 2, R1 is a C1-C8 alkyl group or alkylsilyl group, R2 is a C1-C8 alkylene group, R3 and R4 are each independently a C1-C8 alkyl group, a is an integer of 0 to 2, and n is an integer of 1 to 3.