Olefin polymerization catalyst
AssigneeW.R. Grace & Co.-Conn.
InventorsVladimir P. Marin, Ahmed Hintolay, Neil J. O'Reilly
Life of this patent
Estimating the term…
Abstract
A process for preparing a solid pre-catalyst component for use in olefinic polymerization includes dissolving a magnesium chloride in an alcohol and optionally adding water to form a first solution having a water content of about 0.5 mmol water per mol MgCl2 to about 100 mmol water per mol MgCl2; contacting the first solution with a first titanium compound to form the solid pre-catalyst component; and treating the solid pre-catalyst component with a hydrocarbon or halogenated hydrocarbon solvent, optionally containing a second titanium compound.
Claims19
A process for preparing a solid pre-catalyst component for use in olefinic polymerization, the process comprising:
- dissolving anhydrous magnesium chloride in an alcohol to form a complex of formula [Mg(alcohol)n]Cl2, where n is 2, 3, 4, 5, or 6;
- and
- adding water to form a first solution having a water content of about 0.5 mmol water per mol MgCl2 to about 100 mmol water per mol MgCl2;
- contacting the first solution with a first titanium compound to form the solid pre-catalyst component;
- and
- treating the solid pre-catalyst component with a hydrocarbon or halogenated hydrocarbon solvent, optionally containing a second titanium compound.
Dependencies are inferred from the claim text.