Polymerization catalyst systems, their production and use

Details Polymerization catalyst systems, their production and use Polymerization catalyst systems, their production and use

C - Chemistry, Metallurgy

08

F

C08F 4/602 (2006.01) C07F 17/00 (2006.01) C08F 2/04 (2006.01) C08F 2/34 (2006.01) C08F 4/02 (2006.01) C08F 4/615 (2006.01) C08F 4/655 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2193410

This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst system of the invention provides for a supported bulky ligand transition metal catalyst system which when utilized in a polymerization process substantially reduces the reactor fouling and sheeting particularly in a gas phase polymerization process. The method comprises contacting a porous support with a metallocene solution and an activator solution, wherein the total volume of the metallocene solution and the activator solution together is in the range of from less than that at which a slurry is formed to above one time the total pore volume of the porous support.

La présente invention se rapporte généralement à un système catalyseur supporté utile dans la polymérisation d'oléfines. Le procédé de support de ce système catalyseur a recours à un catalyseur à base de métal de transition supporté à ligands en vrac réduisant sensiblement l'encrassement du réacteur et la formation de dépôts dans un processus de polymérisation, notamment en phase gazeuse. Ce procédé consiste à mettre en contact un support poreux avec une solution de métallocène et une solution d'activateur, le volume total de la solution de métallocène et de la solution d'activateur ensemble étant compris entre une valeur inférieure à celle où il se forme une boue et une valeur supérieure au volume total des pores du support poreux.

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