Olefin polymerization catalyst compositions and...

C - Chemistry – Metallurgy – 08 – F

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C08F 10/00 (2006.01) C08F 4/60 (2006.01) C08F 4/64 (2006.01) C08F 10/04 (2006.01)

Patent

CA 1227785

A B S T R A C T OLEFIN POLYMERIZATION CATALYST COMPOSITIONS AND POLYMERIZATION PROCESS A highly active and stereoselective olefin polymerization catalyst component is obtained by halogenating a magnesium compound of the formula MgRIR'' wherein R' is an alkoxide or aryloxide group and R" is an alkoxide or aryloxide group or halogen, with a halide of tetravalent titanium in the presence of a halohydrocabon, and contacting the halogenated product with an acid halide and a tetravalent titanium compound.

462644

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