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AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsRobert Charles Job, Walter Thomas Reichle
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A solid self-supported cycloalkadienyl catalyst component is disclosed that includes: (i) a mixed metal alkoxide complex which is the reaction product of a magnesium alkoxide or aryloxide and at least one group IVB metal-containing alkoxide or aryloxide; and (ii) Cp, where Cp is a cyclic or polycyclic hydrocarbon having from 3-30 carbon atoms. A self-supported hybrid catalyst also is disclosed which contains the above components (i) and (ii), as well as (iii) a Ziegler-Natta catalyst species. A method of making the self-supported cycloalkadienyl catalyst and the self-supported hybrid catalyst and a method of polymerizing olefins using the catalysts also are disclosed. The catalysts are capable of producing polyolefins in high yield having a broad molecular weight distribution, or a bimodal distribution.
A catalyst composition for the polymerization of olefin monomers consisting essentially of the reaction product or mixture resulting by combining a mixed metal Ziegler-Natta catalyst component precursor comprising magnesium moieties, Group IVB metal moieties, alkoxide or aryloxide moieties, and a cycloalkadienyl group, Cp, having from 3-30 carbon atoms;
A catalyst composition for the polymerization of olefin monomers consisting of the reaction product or mixture resulting by combining a mixed metal Ziegler-Natta catalyst component precursor comprising magnesium moieties, Group IVB metal moieties, alkoxide or aryloxide moieties and a cycloalkadienyl group, Cp, having from 3-30 carbon atoms;
Dependencies are inferred from the claim text.