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

252/56, 252/52.G

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

Patent

CA 1057273

ABSTRACT OF THE DISCLOSURE: The polymerization of alpha-olefins is improved by carry- ing 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 cyclo- alkyl 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 Fe, this product being supported on a carrier having at high superficial area and selected among rare earth oxides; the weight ratio between components (a) and (b) of the catalytic system ranges from 4 to 17. The catalytic system of the invention has a high activity and does not require any preliminary treatment of the carrier.

223382

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