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US 8,940,653 B2Granted
Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom
AssigneeBasell Poliolefine Italia S.r.l.
InventorsGianni Collina, Daniele Evangelisti, Benedetta Gaddi, Anna Fait
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Abstract
Adducts comprising a MgCl2, an alcohol ROH in which R is a C1-C10 hydrocarbon group, present in a molar ratio with MgCl2 ranging from 0.5 to 5 and less than 15% wt, based on the total weight of the adduct, of a metal salt of an aliphatic carboxylic acid having from 8 to 22 carbon atoms.
Claims15
A solid adduct comprising:
- MgCl2,
- an alcohol ROH in which R is a C1-C10 hydrocarbon group, present in a molar ratio with MgCl2 ranging from 0.5 to 5, and
- an aliphatic carboxylic acid having from 8 to 22 carbon atoms or its metal salt present in an amount of less than 15 wt %, based on the total weight of the adduct.
A process for the preparation of solid adducts comprising MgCl2 and an alcohol ROH in which R is a C1l-C10 hydrocarbon group, present in a molar ratio with MgCl2 ranging from 0.5 to 5, comprising:
- contacting MgCl2, the alcohol ROH and an aliphatic carboxylic acid having from 8 to 22 carbon atoms or its metal salt in an amount of less than 15% based on the total weight of MgCl2 and ROH and said acid or salt;
- heating the system at a temperature such that a liquid phase is obtained comprising MgCl2, alcohol and said acid or metal salt;
- emulsifying said liquid phase in a liquid medium which is immiscible with the liquid phase;
- quenching the so obtained emulsion by contacting it with an inert cooling liquid thereby solidifying the emulsified phase into spherical particles.
1 more element
Dependencies are inferred from the claim text.