Polymerization catalyst compositions and processes to...

C - Chemistry – Metallurgy – 08 – F

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C08F 4/6592 (2006.01) C08F 4/646 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2407602

A process to produce a first catalyst composition is provided. The process comprises contacting at least one first organometal compound and at least one activator to produce the first catalyst composition. The activator is selected from the group consisting of aluminoxanes, fluoro-organo borates, and treated solid oxide components in combination with at least one organoa-luminum compound. In another embodiment of this invention, a process to produce a second catalyst composition for producing bimodal polymers is provided. The process comprises contacting at least one first organometal compound, at least one activator, and at least one second organometal compound to produce the second catalyst composition. The first and second catalyst compositions are also provided as well as polymerization processes using these compositions to produce polymers.

L'invention concerne un procédé de production d'une première composition catalytique. Le procédé consiste à mettre en contact au moins un premier composé organométallique et au moins un activateur afin de produire la première composition catalytique. L'activateur est sélectionné dans le groupe constitué d'aluminoxanes, de fluoro-organo borates, et de composants d'oxyde solide traités en combinaison avec au moins un composé organoaluminium. Dans un autre mode de réalisation de l'invention, un procédé destiné à produire une seconde composition catalytique permettant de produire des polymères bimodaux est décrite. Le procédé consiste à mettre en contact au moins un premier composé organométallique, au moins un activateur, et au moins un second composé organométallique afin de produire la seconde composition catalytique. L'invention concerne enfin la première et la seconde composition catalytique, ainsi que le procédé de polymérisation utilisant ces compositions en vue de produire des polymères.

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