| 摘要 |
PURPOSE: Provided is a styrene-based terpolymer comprising a styrene monomer repeat unit, a styrene derivative repeat unit, and a macromonomer repeat unit, which is excellent in fluidity and impact-resistance. CONSTITUTION: The styrene-based terpolymer (formula 1) is produced by copolymerizing the styrene monomer, the styrene derivative, and the macromonomer in the presence of a catalyst comprising a transition metal compound and an alkyl aluminate. The repeat units of the styrene and the styrene derivative have syndiotactic structure. The styrene-based terpolymer (formula 1) has 0.1-50wt. of the macromonomer, a melting point of 150-272deg.C, and a weight average molecular weight of 50,000-5,000,000. In the formula, R1 is halogen atom or C1-C20 alkyl, R2 is C1-20 saturated hydrocarbon, an aromatic or cycloalkyl group, R3 is C1-C10 saturated hydrocarbon, X is an ion-polymerizable monomer used for synthesizing the macromonomer, m is an integer of 400-20,000, n is an integer of 5-200, o is an integer of 1-20, and l is an integer of 10-3000.
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