Catalyst components for the polymerization of olefins and...

Details Catalyst components for the polymerization of olefins and... Catalyst components for the polymerization of olefins and...

C - Chemistry, Metallurgy

08

F

C08F 4/658 (2006.01) C08F 10/00 (2006.01) C08F 110/02 (2006.01)

Patent

CA 2340908

The invention relates to catalyst components, suitable for the preparation of homopolymers and copolymers of ethylene having a broad molecular weight distribution (MWD), which comprise Ti, Mg, Cl, and are characterized by the following properties: surface area, determined by BET method, of lower than 100 m2/g, a total porosity, measured by the mercury method, of higher than 0.25 cm3/g, a pore radius distribution such that at least 45% of the total porosity is due to pores with radius up to 0.1 µm.

Cette invention se rapporte à des composants catalytiques, servant à la préparation d'homopolymères et de copolymères d'éthylène ayant une distribution de poids moléculaire (MWD) large, ces composants comprenant Ti, Mg, Cl et se caractérisant par les propriétés suivantes: une superficie déterminée par le procédé BET inférieure à 100 m?2¿/g, une porosité totale, mesurée par le procédé au mercure, supérieure à 0,25 cm?3¿/g, et une distribution du rayon des pores telle qu'au moins 45 % de la porosité totale est due à des pores ayant un rayon allant jusqu'à 0,1 µm.

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