C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/636, 402/641
C08F 4/64 (2006.01) C08F 4/76 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1206463
ABSTRACT A catalytic component for polymerizing olefins com- prises a solid support containing magnesium-halogen or manganese-halogen bonds, a transition metal halide of a metal selected from Groups IVB and VB of the periodic table, and electron donors. This catalytic component is obtainable by steps comprising: (a) contacting a mixture comprising a magnesium halide or manganese halide and at least one electron donor with a Ti(OR) 4 compound to form a solution, where R is a hydrocarbyl or halogenated hydrocarbyl moiety contain- ing 1 to 20 carbon atoms or a halogen, and (b) reacting the solution with a reagent com- prising a transition metal halide selected from Groups IVB and VB of the periodic table, whereby, with a suitable cocatalyst, polyolefin is formed with high activity, showing a high Isotactic Index, and with a narrow range of particle size distri- bution.
443443
Gowling Lafleur Henderson Llp
Stauffer Chemical Company
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