Components and catalysts for the polymerization of olefins

Details Components and catalysts for the polymerization of olefins Components and catalysts for the polymerization of olefins

C - Chemistry, Metallurgy

08

F

252/111

C08F 4/643 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2033808

"COMPONENTS AND CATALYSTS FOR THE POLYMERIZATION OF OLEFINS" Abstract Disclosed are solid catalyst components for the polymerization of olefins comprising a titanium halide or titanium alkoxy halide, and an electron-donor compound selected from silicon compounds of the formula Image where R1, R2, R3 and R4 are hydrocarbyl radicals, supported on a magnesium halide in active form. Also disclosed are catalysts obtained from said catalyst components and from an Al-alkyl csmpound, as well as catalysts obtained by the reaction of an Al-alkyl compound and a silicon compound of the formula above with a solid catalyst component comprising a titanium halide or halogen alcoholate and an electron-donor compound having specific characteristics of extractability with Al-triethyl, supported on an active magnesium halide. (HM 3983 EST)

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