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

252/105

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

Patent

CA 1211099

A B S T R A C T Catalysts for the polymerization of alpha-olefins, which comprise the product of the reaction between: a) a metallorganic compound of Al; b) an electron-donor compound reactive towards MgC12 but which results not to be completely complexed with AlEt3 at the equivalent point of a potentio metric titration under standard conditions; c) a solid comprising a halogenated Ti compound and an electron-donor compound, both supported on a Mg dihalide, the electron-donor belonging to particu- lar classes of compounds and being extractable with AlEt3 for at least 70% by mols from the solid, the surface area of which after extraction is higher than 20 m2/g.

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