Activator compositions, their preparation, and their use in catalysis
AssigneeAlbemarle Corporation
InventorLubin Luo
Life of this patent
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Abstract
This invention provides activator precursor compositions and activator compositions. The activator precursor compositions are formed from a support material, an organoaluminum compound, and polyfunctional compounds having at least two aromatic groups in which at least two of said aromatic groups each has at least one polar moiety thereon. The activator compositions are formed from a support material, an organoaluminum compound, an aluminoxane, and a polyfunctional compound having at least two aromatic groups in which at least two of said aromatic groups each has at least one polar moiety thereon. Also provided are catalyst compositions, processes for forming catalyst compositions, and polymerization processes utilizing the catalyst compositions of this invention.
Claims18
An activator precursor composition which comprises
- i) a support material in contact with an organoaluminum compound, and
- ii) a polyfunctional compound which has at least two aromatic groups in which at least two of said aromatic groups each has at least one polar monoprotic group thereon.
A process for forming an activator precursor composition, which process comprises bringing together, in an inert, anhydrous environment,
- i) a support material in contact with an organoaluminum compound, and
- ii) a polyfunctional compound which has at least two aromatic groups in which at least two of said aromatic groups each has at least one polar monoprotic group thereon,
- such that an activator precursor composition is formed.
A process for forming an activator composition, which process comprises, in an inert, anhydrous environment,
- i) forming an organoaluminum-treated support by contacting a support material and an organoaluminum compound,
- ii) contacting said organoaluminum-treated support either
- a) with a polyfunctional compound which has at least two aromatic groups in which at least two of said aromatic groups each has at least one polar monoprotic group thereon, forming a mixture, and then contacting said mixture with an aluminoxane, or
- b) with an aluminoxane, forming a mixture, and then contacting said mixture with a polyfunctional compound which has at least two aromatic groups in which at least two of said aromatic groups each has at least one polar monoprotic group thereon, or
- c) with a portion of a polyfunctional compound, forming a first mixture, contacting said first mixture with the aluminoxane, forming a second mixture, and contacting said second mixture with more polyfunctional compound,
- wherein said polyfunctional compound has at least two aromatic groups in which at least two of said aromatic groups each has at least one polar monoprotic group thereon,
- such that an activator composition is formed.
Dependencies are inferred from the claim text.