Patent ID: 8362152

Claim:
A method for manufacturing a modified conjugated diene-vinyl aromatic copolymer, comprising modifying a conjugated diene-vinyl aromatic copolymer by reacting with a first modifier and then reacting with a second modifier; wherein the conjugated diene-vinyl aromatic copolymer is formed by polymerizing a conjugated diene monomer and a vinyl aromatic hydrocarbon monomer in a solvent containing an organic alkali metal initiator, the first modifier is expressed as chemical formula (I): the second modifier is expressed as chemical formula (II): wherein R1 is selected from one of hydrogen, methyl group or ethyl group, R2 is selected from hydrogen, R3 is selected from one of hydrogen, methyl group or ethyl group, X is selected from one of epoxypropoxy group, isocyanate group or 2-(3,4-epoxycyclohexyl) group, R4 is selected from one of alkyl groups with 2˜3 carbon atoms, R5 is selected from one of alkoxy groups with 1˜3 carbon atoms, and R6 is selected from one of alkyl or alkoxy groups with 1˜3 carbon atoms.