Polymerization catalysts and process for producing bimodal...

Details Polymerization catalysts and process for producing bimodal... Polymerization catalysts and process for producing bimodal...

C - Chemistry, Metallurgy

08

F

C08F 10/02 (2006.01) C08F 4/659 (2006.01)

Patent

CA 2619967

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such catalysts to produce polyolefins are also provided. The compositions and methods disclosed herein provide ethylene polymers having a HLMI of from about 0.5 to about 25, a polymer density of from about 0.920 to about 0.965, and a polydispersity of from about 3.0 to about 30.

L'invention concerne des compositions de catalyseurs renfermant un premier composé de métallocène, un second composé de métallocène, un support d'activateur et un composé d'organo-aluminium. Cette invention a aussi pour objet des procédés de préparation et d'utilisation de tels catalyseurs dans la production de polyoléfines, ainsi que des compositions et des procédés qui engendrent des polymères d'éthylène possédant un HLMI compris entre environ 0,5 et environ 25, une densité polymère allant d'environ 0,920 à environ 0,965, et un degré de polydispersion compris entre environ 3,0 et environ 30.

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