Catalyst for the polymerization of alpha-olefins

Details Catalyst for the polymerization of alpha-olefins Catalyst for the polymerization of alpha-olefins

C - Chemistry, Metallurgy

08

F

402/629, 402/630

C08F 4/42 (2006.01) C08F 2/00 (2006.01) C08F 110/00 (2006.01)

Patent

CA 1059977

ABSTRACT OF THE DISCLOSURE: The polymerization of alpha-olefins is improved by carrying the polymerization reaction in the presence of a catalytic system consisting of (a) an aluminum compound represented by the formula AlR3 or AlRxY3-x in which R is an alkyl, aryl or cycloalkyl radical, Y is a halogen or hydrogen and x is a number between 1 and 2, and (b) the combination product of titanium trichloride and an isostructural chloride of another transition metal selected from the group consisting of V, Mn, Co and ??, this product being supported on a carrier having a high superficial area and selected from the oxides of elements belonging to Groups II to IV of the Periodic Table; the weight ratio between components (a) and (b) of the catalytic system ranges from 4 to 7?. The catalytic system of the invention has a high activity and does not require any preliminary treatment of the carrier.

223243

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