| 摘要 |
<p>Provided is a polymerization method of a modified copolymer of conjugated diene and vinyl aromatic hydrocarbon. A multi-functional vinyl benzene-based compound is reacted with an organic alkali metal compound to form a star shaped compound with multiple active sites. A conjugated diene monomer, a vinyl aromatic hydrocarbon monomer, and the star shaped compound with multiple active sites are reacted with each other to form a copolymer of conjugated diene and vinyl aromatic hydrocarbon. The copolymer of conjugated diene and vinyl aromatic hydrocarbon is then reacted with a modifier to form the modified copolymer of conjugated diene and vinyl aromatic hydrocarbon. The modifier is represented by formula 1, wherein R1 is a C2-C4 alkylene group; R2 is a group at least consisting of a C2-C4 alkylene group and a C1-C3 alkoxy group; m is an integer of 5 to 30; and n is an integer of 5 to 35.</p> |
