Benzoindenoindolyl metal catalysts for olefin polymerization
OwnerSandor Nagy, Barbara M. Tsuie +2inventors
InventorsSandor Nagy, Barbara M. Tsuie, Alexandr M. Genaev, Vyacheslav G. Shubin
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Abstract
Catalyst systems that have a benzoindenoindolyl ligand are disclosed. The catalysts are useful for olefin polymerizations. They have high activity and are less susceptible to decreased activity with changes in activator level or changes in polymerization temperature. The resultant polymers have low polydispersity. A new method of preparing N-alkyldihydroindenoindoles is also disclosed. N-alkyldihydroindenoindoles are useful precursors for the benzoindenoindolyl ligand.
Claims17
A catalyst which comprises:
- (a) an activator;
- and
- (b) an organometallic complex comprising a Group 3 to 10 transition metal, M, and at least one benzoindenoindolyl ligand that is bonded to M.
A method which comprises reacting a synthetic equivalent of a benzoindenoindolyl anion with a Group 3 to 10 transition metal source to produce an organometallic complex comprising the metal, M, and at least one benzoindenoindolyl ligand that is bonded to M.
A method of preparing an N-alkyldihydroindenoindole by alkylating an aryl hydrazine to produce a 1-alkylarylhydrazine, followed by condensation of the 1-alkylarylhydrazine with an indanone compound.
A method which comprises preparing 6,7-benzoindan-1-one by reacting naphthalene and acryloyl chloride in the presence of aluminum chloride.
Dependencies are inferred from the claim text.