| 摘要 |
The present application relates to processes for polymerizing one or more olefins, comprising contacting under polymerization conditions one or more olefin monomers with a catalyst system comprising a transition metal compound and an activator having the following formula (2):
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ [R n AH] + [Y] - ,€ƒ€ƒ€ƒ€ƒ€ƒ(2)
wherein [Y] - is a non-coordinating anion (NCA), A is nitrogen, phosphorus or oxygen, n is 3 if A is nitrogen or phosphorus, and n is 2 if A is oxygen, and the groups R are identical or different and are a C 1 to C 3 alkyl group, wherein at a given reaction temperature the weight average molecular weight (Mw) of the polymer formed increases or at least does not substantially decrease with increasing monomer conversion. |
