Basell Poliolefine Italia, S.p.a.

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Gianni Vitale

Mario Sacchetti

Olefin polymers produced using components of catalysts obtained by contacting a Ti compound of formula Ti(OR) X , where n is the valence of titanium and y is a number between 1 and n, with a pre-polymer having a porosity higher than 0.3 cc/g and containing from 0.5 to 100 g of polymer per g of solid catalyst component, the pre-polymer being obtained by (co)polymerizing an olefin or a diolefin in the presence of a catalyst comprising a Ti, V, Zr or Hf compound supported on a Mg dihalide having a mean crystallite dimension lower than 30 nm.

Olefins produced from pre-polymerized catalyst component catalysts

Components of catalysts for the polymerization of olefins are obtained by contacting a Ti compound of formula Ti(OR) X , where n is the valence of titanium and y is a number between 1 and n, with a pre-polymer having a porosity higher than 0.3 cc/g and containing from 0.5 to 100 g of polymer per g of solid catalyst component, the pre-polymer being obtained by (co)polymerizing an olefin or a diolefin in the presence of a catalyst comprising a Ti, V, Zr of Hf compound supported on an Mg dihalide having a mean crystallite dimension lower than 30 nm.

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Milan, Italy

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