Groups 2 and 13 based catalyst composition for preparing high-syndiotacticity polystyrene from styrene or other acryl ethylene monomers and process using the same

摘要

A catalyst composition for preparing high-syndiotacticity polystyrene polymers which comprises: (a) a titanium complex represented by the following formula of TiR'₁R'₂R'₃R'₄ or TiR'₁R'₂R'₃, wherein R'₁, R'₂, R'₃, and R'₄ are, independently, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a hydrogen atom, or a halogen atom; (b) a cyclopentadienyl complex represented by the following formula: wherein R₁ - R₁₃ are, independently, alkyl group, aryl group, silyl group, halogen atom, or hydrogen atom; R_a and R_b are, independently, alkyl group, aryl group, alkoxy, aryloxy group, cyclopentadienyl group, hydrogen atom, or halogen atom: and X_a is a Group IIA element and X_b is a Group IIIA element.