Supported olefin polymerization catalyst, its preparation...

Details Supported olefin polymerization catalyst, its preparation... Supported olefin polymerization catalyst, its preparation...

C - Chemistry, Metallurgy

08

F

C08F 4/602 (2006.01) C08F 4/02 (2006.01) C08F 10/00 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01) C08F 110/02 (2006.01)

Patent

CA 2175702

Until now, olefin polymerization catalysts based on a metallocene, an alumoxane and a support have been highly uneven in quality. A new process had now been developed for the preparation of a supported olefin polymerization catalyst, wherein (a) a metallocene/activator reaction product, a solvent capable of dissolving it, and a porous support are brought into mutual contact, and (b) the solvent is removed, and wherein step (a) is carried out so that the porous support is impregnated with an amount at maximum its pore volume of the metallocene/activator reaction product and solvent.

Les catalyseurs de polymérisaton d'oléfines, du type contenant un métallocène, un alumoxane et un support, se sont révélés jusqu'ici de qualité très inégale. Un nouveau procédé a à présent été développé pour la préparation d'un catalyseur de polymérisation d'oléfines sur support, selon lequel (a) on met en contact réciproque un produit de réaction métallocène/activateur, un solvant apte à dissoudre de produit, ainsi qu'un support poreux, et (b) on enlève le solvant. L'étape (a) est exécutée de façon que le support poreux soit imprégné du produit de réaction métallocène/activateur et du solvant à un niveau correspondant à son volume poreux maximum.

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