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US 11,891,464 B2Granted
Alkane-soluble non-metallocene precatalysts
AssigneeDow Global Technologies LLC
InventorsBethany M. Neilson, Roger L. Kuhlman, Ian M. Munro, John F. Szul
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Abstract
A compound of formula (1) as drawn in the description, wherein M is a Group 4 metal, one R is a silicon-containing organic solubilizing group, and the other R is a silicon-containing organic solubilizing group or a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.
Claims15
A compound of formula (1):
- wherein M is Zr or Hf;
- one R independently is an unsubstituted or substituted quaternary-silahydrocarbyl group;
- and the other R is an unsubstituted or substituted quaternary-silahydrocarbyl group or an unsubstituted or substituted (aryl)alkyl group.
A compound of formula (1A):
Dependencies are inferred from the claim text.