Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Patent
1995-05-15
1998-01-27
Nagumo, Mark
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
556 43, 526943, 526160, C09F 1700
Patent
active
057124043
ABSTRACT:
In accordance with the present invention there is provided a process for preparing a cyclopentadienyl-type ligand comprising reacting an alkali metal compound and a fulvene-type compound to form a dianion, and then reacting the dianion with water. In accordance with another embodiment of the present invention a process for preparing a metallocene compound is provided comprising reacting an alkali metal compound, a fulvene-type compound, and a transition metal-containing compound. In another embodiment, the metallocene compound and a cocatalyst are combined to form a catalyst system. Other aspects of the invention include the cyclopentadienyl-type ligands, metallocene compounds, and catalyst systems thus produced and polymerization processes employing the catalyst systems.
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Alt Helmut G.
Peifer Bernd
Welch M. Bruce
Corvin Carl D.
Nagumo Mark
Phillips Petroleum Company
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