Polymerisation catalyst

Details Polymerisation catalyst Polymerisation catalyst

B - Operations, Transporting

01

J

402/636, 402/641

B01J 31/26 (2006.01) C08F 4/76 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1168213

ABSTRACT OF THE DISCLOSURE A supported Ziegler catalyst prepared by the following steps: (A) heating together at a temperature in the range 250 to 1100°C a refractory oxide support material having surface hydroxyl groups and one or more halogen-free metal derivatives which are hydrides and/or organic derlvatives of the metal. (B) reacting the product from (A) with one or more organometallic compounds having the feneral formula MRIaQb-a wherein M is a metal atom, R1 is a hydrocarbon group, Q is a halogen or an oxyhdrocarbyl group, b is the valency of M and a is an integer from 1 to b and wherein the metal atom M is aluminium, boron, lithium, zinc or magnesium, (C) impregnating the solid protuct from step (B) with one or more halogen-containing transition metal compounds wherein the transition metal or metals comprise titsnium and/or vanadium and/or zirconium.

395440

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