| 摘要 |
PURPOSE: A catalyst composition including a metallocene catalyst is provided to use the composition for synthesizing a polyethylene polymer with long-chain branches. CONSTITUTION: A catalyst composition including a metallocene catalyst is marked with chemical formula 1. In the chemical formula 1, Ra is a hydrogen element, an alkyl group with 1~20 carbons, its derivative, or a fused ring structure. Rb is Rc or TRcj. Rd or R` are selected from the group consisting of the hydrogen element, the alkyl group with 1~20 carbons, a C2~20 alkenyl group, a C6~20 aryl group, a C7~40 alkylaryl group, and a C8~40 aryl alkenyl group. |
