A catalyst system useful for polymerizing olefins is disclosed. It comprises an activator and an organometallic complex. The complex includes a Group 3-10 transition or lanthanide metal and a 1,3-bis(arylimino)isoindoline or 1,3-bis(heteroarylimino)isoindoline ligand. Activities of the Group 8-10 catalyst systems rival or exceed those of late transition metal bis(imines). The resulting polyolefins typically have high molecular weights, broad molecular weight distributions, and a high degree of crystallinity, which makes them valuable for film applications.
本发明揭示了一种用于聚合烯烃的催化剂系统。它包括一个活化剂和一个有机
金属配合物。该配合物包括一个3-10族过渡
金属或
镧系
金属和一个1,3-双(芳基
亚胺)
异吲哚啉或1,3-双(杂芳基
亚胺)
异吲哚啉配体。8-10族催化剂系统的活性可与晚期过渡
金属双
亚胺相媲美甚至超越。由此产生的聚烯烃通常具有高分子量,广泛的分子量分布和高结晶度,这使它们在薄膜应用中非常有价值。