Olefin polymerization catalyst component

Details Olefin polymerization catalyst component Olefin polymerization catalyst component

C - Chemistry, Metallurgy

08

F

252/52.G

C08F 4/10 (2006.01) C08F 4/658 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2032517

The present invention relates to a catalyst for the polymerization of olefins and provides a catalyst component of magnesium support type which has a high catalytic activity as well as improved catalytic grain strength sufficient for practical use and which hardly deteriorates even after storage for a long time. The feature of the catalyst component consists in that obtained by contacting. (a) metallic magnesium and (b) a hydrocarbon represented by the general formula RX wherein R is a hydrocarbon group of 1 to 20 carbon atoms and X is a halogen atom, then contacting with (c) a compound represented by the general formula X1 nM(OR1)m-n wherein X1 is a hydrogen atom, halogen atom or a hydrocarbon group of 1 to 20 carbon atoms, M is boron, carbon, aluminum, silicon or phosphorus atom, R1 is a hydrocarbon group of l to 20 carbon atoms, m is the atomic valence of M and m > n ~ 0 and (d) a titanium alkoxide represented by the general formula Ti(OR2)4 wherein R2 is a hydrocarbon group of 1 to 12 carbon atoms, and then contacting the resulting solid with (e) an olefin in the presence of (f) an organoaluminum compound, then with (g) a halogencontaining alcohol and further with (h) an electron donating compound and (i) a titanium compound

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