Catalyst compositions, methods of polymerization, and...

C - Chemistry – Metallurgy – 08 – F

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C08F 10/02 (2006.01) C08F 4/64 (2006.01) C08F 4/6592 (2006.01) C08L 23/06 (2006.01)

Patent

CA 2388137

The present invention provides catalyst compositions useful in polymerization processes, including a Group 15 containing metal compound, mixed catalyst compositions including the Group 15 containing metal compound and a second metal compound which is preferably a bulky ligand metallocene catalyst, supported and unsupported catalyst systems thereof, and a process for polymerizing olefin(s) utilizing them. The invention also discloses a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymer, and its use in various end-use applications such as film, molding and pipe.

La présente invention concerne des compositions catalytiques utilisées dans les processus de polymérisation, qui comprennent un composé métallique contenant un métal du groupe 15, des compositions catalytiques mixtes renfermant le composé métallique contenant un métal du groupe 15 précité et un second composé métallique qui est de préférence un catalyseur métallocène à ligands volumineux, les systèmes catalytiques supportés et non supportés de ces dernières, et un processus de polymérisation d'oléfine(s) faisant appel à ceux-ci. L'invention concerne également une nouvelle polyoléfine, en général du polyéthylène, en particulier un polymère multimodal et plus spécifiquement, un polymère bimodal, et son utilisation dans diverses applications d'utilisation finale telle que dans les pellicules, les moulages et les tuyaux.

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