Alkylation of transition metal coordination catalyst complexes
AssigneeExxonMobil Chemical Patents Inc.
InventorsLubin Luo, Nikola S. Lambic, Jo Ann M. Canich
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Abstract
The alkylation of transition metal coordination catalyst complexes (such as metallocenes and/or post-metallocenes) in non-polar solvents with high conversion to the dialkylated transition metal coordination catalyst complex may be accomplished by reacting (a) a transition metal coordination catalyst complex comprising a transition metal linked to at least one an anionic donor ligand and at least one leaving group having a non-carbon atom directly linked to the transition metal, (b) an aluminum alkyl, and (c) a fluoride salt at 0° C. to 85° C. in a non-polar solvent to yield an alkylated transition metal coordination catalyst complex.
Claims20
A method comprising:
- reacting (a) transition metal coordination catalyst complex comprising a transition metal linked to at least one anionic donor ligand and at least one leaving group having a non-carbon atom directly linked to the transition metal, (b) an aluminum alkyl, and (c) a fluoride salt at 0° C. to 85° C., wherein a molar ratio of aluminum of the aluminum alkyl to fluoride of the fluoride salt is 1:15 to 1:3, in a non-polar solvent to yield an alkylated transition metal coordination catalyst complex.
A method comprising:
- reacting (a) transition metal coordination catalyst complex comprising a transition metal linked to at least one anionic donor ligand and at least one leaving group having a non-carbon atom directly linked to the transition metal, wherein the transition metal coordination catalyst complex is selected from the group consisting of:
- bisphenolate complexes;
- diphenolate complexes;
- oxadiazolylphenolate complexes;
- diethylenetriamine complexes;
- oxybis(ethylamine) complexes;
- pyridyldiamido complexes;
- quinolinyldiamido complexes;
- cyclopentadienyl-amidinate complexes;
- and iron pyridyl bis(imine) complexes;
- or any combination thereof, including any combination with metallocene complexes;
- (b) an aluminum alkyl, and (c) a fluoride salt at 0° C. to 85° C. in a non-polar solvent to yield an alkylated transition metal coordination catalyst complex.
Dependencies are inferred from the claim text.