Supported olefin polymerization catalysts

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 10/00 (2006.01) C08F 4/64 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2456133

A supported olefin polymerization catalyst system and a method of making it are disclosed. The catalyst system comprises: (a) a support having mean particle size less than about 30 microns chemically treated with alumoxane; (b) an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is .pi.-bonded to M; and (c) an activator. Chemical treatment with alumoxane and support mean particle size less than 30 microns are key to making supported indenoindolyl containing catalysts having high activity.

L'invention concerne un système catalyseur sur support de polymérisation d'oléfine ainsi que son procédé de production. Ledit système catalyseur comprend : a) un support, présentant une taille moyenne de particules inférieure à environ 30 microns, qui est traité chimiquement à l'alumoxane ; b) un complexe organométallique comprenant un métal de transition ou lanthanide de groupe 3 à 10, appelé M, et au moins un ligand indéno-indolyle rattaché à M par liaison .pi., et c) un activateur. Un traitement chimique à l'alumoxane et un support présentant une taille moyenne de particules inférieure à 30 microns sont nécessaires pour la production de catalyseurs sur support contenant de l'indéno-indolyle à activité élevée.

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