Soluble magnesium complexes useful for the production of polyolefin catalysts and catalysts prepared therewith
AssigneeFina Technology, Inc.
InventorsTim J. Coffy, Steven D. Gray
Life of this patent
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Abstract
A method of forming a polyolefin catalyst component includes halogenating metal complexes. The metal complexes result from reacting a metal alkoxide with an alcohol-ether. A particular non-limiting example is a magnesium complex formed by reacting magnesium alkoxide with an ethylene alcohol-ether, and then chlorinating the magnesium complex. Catalyst components, catalysts, catalyst systems, polyolefin polymers and methods of making each are disclosed.
Claims27
A process for making a catalyst precursor comprising contacting a metal compound of the formula M(OR)2 with alcohol-ethers of the formula HOCR1R2CR3R4OR5 to form a three- or four-coordinate catalyst precursor having the general formula:
- where M is a metal from Group IIA of the Periodic Table, n=1 or 2, R is a hydrocarbyl having from 1 to 20 carbon atoms;
- R1, R2, R3, R4 and R5 are the same or different;
- and R1, R2, R3, R4 and R5 are a substituted or unsubstituted alkyl or aryl moiety having from about 1 to about 20 carbons atoms or hydrogen.
A process for olefin polymerization, the process comprising contacting one or more olefin monomers together in the presence of a catalyst under polymerization conditions, wherein the catalyst is produced by a process comprising contacting a metal compound of the formula M(OR)2 with alcohol-ethers of the formula HOCR1R2CR3R4OR5 to form a three- or four-coordinate catalyst precursor having the general formula:
- where M is a metal from Group IIA of the Periodic Table, n=1 or 2, R is a hydrocarbyl having from 1 to 20 carbon atoms;
- R1, R2, R3, R4 and R5 are the same or different;
- and R1, R2, R3, R4 and R5 are a substituted or unsubstituted alkyl or aryl moiety having from about 1 to about 20 carbons atoms or hydrogen.
A catalyst produced by a process comprising contacting a metal compound of the formula M(OR)2 with alcohol-ethers of the formula HOCR1R2CR3R4OR5 to form a three- or four-coordinate catalyst precursor having the general formula:
- where M is a metal from Group IIA of the Periodic Table, n=1 or 2, R is a hydrocarbyl having from 1 to 20 carbon atoms;
- R1, R2, R3, R4 and R5 are the same or different;
- and R1, R2, R3, R4 and R5 are a substituted or unsubstituted alkyl or aryl moiety having from about 1 to about 20 carbons atoms or hydrogen.
Dependencies are inferred from the claim text.