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 2032508

According to the present invention, there is the provision of a catalyst component of metal oxide support type which has a high catalytic activity, that is, a little catalyst residue in a polymer, 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 present invention of consists in a catalyst component for the polymerization of olefins, obtained by contacting (a) a metal oxide and (b) a dihydrocarbyl magnesium 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 1 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 halogen-containing alcohol and further with (h) an electron donating compound and (i) titanium compound.

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