Patent ID: 8367775

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 copolymerizing 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, —CH2NH2, —CH═CH2, —(CH2) 2CONH2, —CH═CHCONH2, —C6H4-CONH2 or-CONH2, X is selected from one of epoxypropoxy group, isocyanate group or 2-(3,4-epoxycyclohexyl group), R2 is selected from one of alkyl group with 2˜3 carbon atoms, R3 is selected from one of alkoxy group with 1˜3 carbon atoms, and R4 is selected from one of alkyl group or alkoxy group with 1˜3 carbon atoms.