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US 10,647,588 B2Granted
Synthesis of magnesium dichloride support for the AST off-line ZN catalyst with a plug flow reactor (PFR)
AssigneeNOVA Chemicals (International) S.A.
InventorsPeter Zoricak, Qinyan Wang, Holly Ann Severin, Mohamed Elamine Aiffa, Kevin Dickinson
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Abstract
The various embodiments of the invention provide, a magnesium dichloride support and the magnesium titanium polymerization procatalyst made therefrom, and methods for making and using the same.
Claims18
A method of making a disordered form of MgCl2 comprising
- combining MgR2 and reactive organic chloride or HCl and a solvent chosen from C5-12 alkanes in a plug flow reactor (PFR), wherein each R is independently chosen from C2-8 alkyl radicals;
- and
- operating the PFR at conditions sufficient to create the disordered form of MgCl2.
A method for making a Ziegler Natta (pro) catalyst comprising
- combining MgR2 and reactive organic chloride or HCl and a solvent chosen from C5-12 alkanes in a PFR reactor, wherein each R is independently chosen from C2-8 alkyl radicals;
- operating the PFR reactor to create a disordered form of MgCl2;
- contacting the disordered form of MgCl2 with iBuAlCl2, TiCl4 and Et2AlOEt to form the (pro)catalyst.
A method for making polyethylene polymers and copolymers comprising
- combining MgR2 and reactive organic chloride or HCl and a solvent selected from C5-12 alkanes in a PFR reactor, wherein each R is independently selected from C2-8 alkyl radicals;
- operating a PFR reactor to create a disordered form of MgCl2;
- contacting the disordered form of MgCl2 with iBuAlCl2, TiCl4 and Et2AlOEt to form the (pro)catalyst;
- contacting the procatalyst of the previous step with ethylene, and optionally an alpha-olefin and operating the reactor to create the desired polyethylene polymers and copolymers.
1 more element
Dependencies are inferred from the claim text.