Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom
AssigneeBasell Poliolefine Italia S.r.l.
InventorsDaniele Evangelisti, Fabiana Fantinel, Benedetta Gaddi, Diego Brita, Gianni Collina
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Abstract
Solid adducts comprising MgCl2, ethanol and water characterized in that the amount of ethanol ranges from 50% to less than 57% by weight, the amount of water is ranges from 0.5 to 5% by weight, the ethanol/water weight ratio is lower than 60 and the porosity determined with Hg method due to pores with radius up to 1 μm and expressed in cm3/g, is lower than 0.2.
Claims5
A catalyst precursor comprising a solid adduct comprising MgCl2, ethanol and water, wherein the amount of ethanol ranges from 52-55% by weight, with respect to the adduct, the amount of water ranges from 0.5-5% by weight, with respect to the adduct, the ethanol/water weight ratio is less than 60 and the porosity of the adduct determined with the Hg method due to pores with radii up to 1 μm and expressed in cm3/g, is lower than 0.1;
- wherein the catalytic precursor has a main melting temperature peak of about 97±1° C. and a highest temperature peak of less than 108° C. as determined using differential scanning calorimetry (DSC).
Dependencies are inferred from the claim text.