Solid alpha-olefin polymerization catalyst components

C - Chemistry – Metallurgy – 08 – F

Patent

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252/109, 252/111

C08F 4/10 (2006.01) C08F 4/16 (2006.01) C08F 10/00 (2006.01) C08F 10/06 (2006.01)

Patent

CA 2016749

A process for preparing a solid catalyst component which comprises halogenating a magnesium compound in the formula MgRR1.nCO2 in which R and R1 are the same or different alkoxy or phenoxy groups and n is a number of from 0 to 2 with a halide of tetravalent titanium in the presence of dialkylester of a dihydric aromatic carboxylic acid and an inert hydrocarbon diluent by reacting at a temperature of from 120 to 136 °C and recovering the solid reaction product from the reaction mixture.

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