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AssigneeBasell Poliolefine Italia S.r.l.
InventorsSimona Guidotti, Simona Esposito, Dario Liguori, Giampiero Morini, Fabrizio Piemontesi, Gianni Vitale
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Catalyst components component for the (co)polymerization of olefins CH2═CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, comprising Ti, Mg, Zn, Cl, and an electron donor compound characterized by the fact that more than 50% of the titanium atoms are in the +4 valence state, and that the amount of Zn ranges from 0.1 to 4% by weight based on then total weight of said solid catalyst component.
A catalyst for the (co)polymerization of olefins CH2═CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, having a solid catalyst component having an average diameter of 5-150 μm, wherein the solid catalyst component comprises Ti, a Zn compound, MgCl2, and an electron donor compound, wherein more than 50% of titanium atoms are in a +4 valence state, wherein an amount of Zn ranges from 0.1 to 4% by weight based on a total weight of solid catalyst component, and wherein the Zn compound is selected from Zn halide, Zn carbonate, Zn acetate, Zn nitrate, Zn oxide, Zn sulfate or Zn sulfide.
Dependencies are inferred from the claim text.