Method of making mixed ziegler-natta/metallocene catalysts

Details Method of making mixed ziegler-natta/metallocene catalysts Method of making mixed ziegler-natta/metallocene catalysts

B - Operations, Transporting

01

J

B01J 31/00 (2006.01) B01J 37/00 (2006.01) C08F 4/02 (2006.01) C08F 4/60 (2006.01) C08F 10/02 (2006.01) C08F 210/16 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2465570

Methods of making mixed Ziegler-Natta/metallocene catalysts are disclosed. The methods include slurrying a dehydrated support in a hydrocarbon solvent, adding a dialkylmagnesium compound, then adding a non-metallocene group 4 or 5 metal compound, followed by adding a metallocene, an alumoxane, and optionally an aklyl aluminum compound and an electron donor compound, followed by drying the product. The alumoxane is added in an aromatic solvent.

L'invention concerne des procédés de préparation de catalyseurs mixtes Ziegler-Natta/métallocène. Ces procédés consistent à mettre en oeuvre une suspension d'un support déshydraté dans un solvant hydrocarboné, à ajouter un composé dialkylmagnésium, à ajouter ensuite un composé métallique non métallocène des groupes 4 ou 5, puis à ajouter un métallocène, un alumoxane, et éventuellement un composé alkylaluminium et un composé donneur d'électrons, et finalement à sécher le produit. L'alumoxane est ajouté dans un solvant aromatique.

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