Olefin polymerization process using activated lewis acid-base complexes
AssigneeUnivation Technologies, LLC
InventorMatthew W. Holtcamp
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Abstract
This description addresses a process for the preparation of polyolefins from one or more olefinic monomers comprising combining said olefins under olefin polymerization conditions with i) a transition metal organometallic catalyst compound, ii) a Lewis acid-base complex where the Lewis acid group is an aluminum or boron compound having at least one halogenated aryl ligand and the Lewis base group is an amine or ether compound, said combining being conducted in the presence of a tri-n-alkyl aluminum or gallium compound.
Claims7
A process for the preparation of polyolefins from one or more olefinic monomers comprising combining said olefins with i) at least one transition metal organometallic catalyst compound, ii) a Lewis acid-base complex comprising a Lewis acid group and a Lewis base group wherein the Lewis acid group is a Group 13 compound having at least one halogenated aryl ligand and the Lewis base group is an amine or ether compound, said combining being conducted in the presence of at least one tri-n-alkyl aluminum compound, wherein the Lewis base group inhibits the reaction of the Lewis acid group having at least one halogenated aryl ligand with the transition metal organometallic catalyst compound until compound with the tri-n-alkyl aluminum compound.
A process for preparing polyolefins from one or more olefinic monomers utilizing a catalyst system comprising combining said olefinic monomer(s) with a i) transition metal organometallic catalyst compound and ii) a Lewis acid-base complex comprising a Lewis acid group and a Lewis base group wherein the Lewis acid group is a Group 13 compound having at least one halogenated aryl ligand, said combining being conducted in the presence of at least one tri-n-alkyl aluminum compound, wherein the Lewis base group inhibits the reaction of the Lewis acid group having at least one halogenated aryl ligand with the transition metal organometallic catalyst compound until compound with the tri-n-alkyl aluminum compound.
Dependencies are inferred from the claim text.