| 摘要 |
A catalyst system useful for polymerizing olefins is disclosed. It comprises an activator and an organometallic complex. The complex includes a Group 3-1 0 transition or lanthanide metal and a 1,3-bis(arylimino)isoindoline or 1,3- bis(heteroarylimino)isoindoline ligand. Activities of the Group 8-10 catalys t 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.
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