A process for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers using novel catalyst compositions comprising titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, .pi.-bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure, also referred to as constrained geometry complexes, and an activating cocatalyst.
使用新型催化剂组分聚合烯烃、二烯烃和/或
乙炔基不饱和单体的方法,该催化剂组分包括含有一种且仅有一种环状离域、阴离子、π键结合基团的
钛或
锆络合物,其中
金属处于+2形式氧化态且具有桥接
配体结构,也称为约束几何络合物,以及活化协同催化剂。