Olefin polymerization catalyst component, process for...

Details Olefin polymerization catalyst component, process for... Olefin polymerization catalyst component, process for...

C - Chemistry, Metallurgy

08

F

252/109, 402/566

C08F 10/00 (2006.01) C08F 4/645 (2006.01)

Patent

CA 1334841

A catalyst component (X") obtained by treating an olefin polymerization catalyst (X) formed from (A) a solid titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredients, (B) an organoaluminum compound catalyst component, and as required, (C) an electron donor with an alpha-olefin by preliminarily polymerizing the alpha- olefin in an amount of 0.1 to 500 g per gram of the solid titanium catalyst component (A) in the presence of said catalyst (X), and contacting the treated catalyst (X') with at least 0.1 mole, per gram-atom of titanium in the treated catalyst (X'), of oxygen. A process for produc- ing the olefin polymerization catalyst component. A catalyst (Y) for olefin polymerization formed from [I] the above catalyst component (X"), [II] an organoaluminum compound catalyst component and as required [III] an electron donor. Also provided is a process for polymer- izing olefins in the presence of the olefin polymerization catalyst (Y).

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