Abstract: This invention relates to late transition metal catalyst precursors and catalysts for olefin dimerizations and oligomerizations, and to methods for making and using these catalysts.

Abstract: A series of novel late transition metal catalysts for olefin oligomerization have been invented. The catalysts demonstrate high activity and selectivity for linear &agr;-olefins.

Abstract: This invention relates to a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, where the polymer has:

Abstract: Embodiments of the present invention relate to article comprising a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g′) of 0.95 or less measured at the Mz of the polymer; and an Mw of 100,000 or less. This invention further relates to a process to produce an olefin polymer comprising: 1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less; 2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 40% or more; 3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, in a reaction zone.

Abstract: A series of soluble &agr;-diimine late transition metal catalysts has been invented comprising a substituted or unsubstituted catecholate ligand. The catalysts demonstrate high activity and selectivity for linear &agr;-olefins. As such, these catalysts conveniently oligomerize ethylene. Typical activators as known to those of ordinary skill in the art are used to activate these transition metal catalysts. These catalysts can be used in a supported or unsupported form.

Abstract: A series of soluble &agr;-diimine late transition metal catalysts has been invented. The catalysts demonstrate high activity and selectivity for linear &agr;-olefins. As such, these catalysts conveniently oligomerize ethylene. Typical activators as known to those of ordinary skill in the art are used to activate these transition metal catalyst. These catalysts can be used in a supported or unsupported form.

Abstract: Described are certain monocyclopentadienyl Group IV B metal compounds, catalyst systems comprising such monocyclopentadienyl metal compounds and an activator, and a process using such catalyst systems for the production of polyolefins, particularly high molecular weight ethylene-&agr;-olefin copolymers having a high level of &agr;-olefin incorporation.

Abstract: The invention is a catalyst system including a monocyclopentadienyl titanium compound and an alumoxane component which is highly productive for polymerizing ethylene and &agr;-olefins to produce a high molecular weight ethylene-&agr;-olefin copolymer having a high content of &agr;-olefin.

Abstract: The invention is a catalyst system including a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer.

Abstract: The invention encompasses a mixed transition metal olefin polymerization catalyst system suitable for the polymerization of olefin monomers comprising one late transition metal catalyst system and at least one different catalyst system selected from the group consisting of late transition metal catalyst systems, transition metal metallocene catalyst systems or Ziegler-Natta catalyst systems. Preferred embodiments include at least one late transition metal catalyst system comprising a Group 9, 10, or 11 metal complex stabilized by a bidentate ligand structure and at least one transition metal metallocene catalyst system comprising a Group 4 metal complex stabilized by at least one ancillary cyclopentadienyl ligand. The polymerization process for olefin monomers comprises contacting one or more olefins with these catalyst systems under polymerization conditions.

Abstract: Described are certain tetramethylcyclopentadienyl titanium compounds, catalyst systems comprising such compounds and an activator, and to a process using such catalyst systems for the production of polyolefins, particularly ethylene-&agr;-olefin copolymers having a high molecular weight and high level of &agr;-olefin incorporation.

Abstract: A catalyst system comprising a Group 4 transition metal cation having bonded thereto (1) a single cyclopentadienyl ligand or polycyclic derivative thereof, (2) a Group 15 or 16 heteroatom ligand, said single cyclopentadienyl ligand or polycyclic derivative and said heteroatom ligand being covalently bound and bridged to each other, and (3) at least one other ligand selected from the group consisting of hydride, hydrocarbyl, substituted hydrocarbyl, and hydrocarbyl substituted organonometalloid radicals; (b) a compatible non-coordinating anion; (c) a Group 13 element, hydrolyzable Lewis acid compound. The catalyst system is useful for polymerizing olefins, diolefins, cyclic olefins or acetylenically unsaturated monomers, either alone or in combination with each other or with other polymerizable monomers.

Abstract: Copolymers, and processes to make them, are provided which are derived from monomers comprising: a) one mono-olefin having a single Ziegler-Natta polymerizable bond; b) a second monomer having at least one Ziegler-Natta polymerizable bond; c) a third monomer having at least two Ziegler-Natta polymerizable bonds such monomer being: i) straight-chained and of less than six or at least seven carbon atoms; ii) other than straight chained; or iii) combinations thereof, such copolymer having: c) at least about one carbon-carbon unsaturated bond per number average molecule; d) viscous energy of activation (Ea) at least 1 kcal/mol greater than a copolymer having a linear backbone derived from same monomers, but excluding species having at least two Ziegler-Natta polymerizable bonds; e) crystallinity level of about 10% to about 50%; and f) Mz/Mw at least about 1.7. Such copolymers show enhanced melt processability and other attributes during end-product fabrication.

Abstract: A process for polymerizing olefins, diolefins, cyclic olefins or acetylenically unsaturated monomers, either alone or in combination with each other or with other polymerizable monomers with a catalyst system comprising a Group 4 transition metal cation having bonded thereto (1) a mono cyclopentadienyl ligand or polycyclic derivative thereof, (2) a Group 15 or 16 heteroatom ligand, said mono cyclopentadienyl ligand or polycyclic derivative and said heteroatom ligand being covalently bound and bridged, and (3) at least one other ligand; (b) a compatible non-coordinating anion; and a (c) a Group 13 element, hydrolyzable Lewis acid compound is disclosed.

Abstract: The invention relates to processes for producing polyolefins at pressures substantially below conventional high pressure conditions in two-phase conditions below the cloud point. The invention can involve a continuous system with optional recycle.

Abstract: The invention encompasses a mixed transition metal olefin polymerization catalyst system suitable for the polymerization of olefin monomers comprising one late transition metal catalyst system and at least one different catalyst system selected from the group consisting of late transition metal catalyst systems, transition metal metallocene catalyst systems or Ziegler-Natta catalyst systems. Preferred embodiments include at least one late transition metal catalyst system comprising a Group 9, 10, or 11 metal complex stabilized by a bidentate ligand structure and at least one transition metal metallocene catalyst system comprising a Group 4 metal complex stabilized by at least one ancillary cyclopentadienyl ligand. The polymerization process for olefin monomers comprises contacting one or more olefins with these catalyst systems under polymerization conditions.

Abstract: Described are certain monocyclopentadienyl Group IV B metal compounds, catalyst systems comprising such monocyclopentadienyl metal compounds and an activator, and a process using such catalyst systems for the production of polyolefins, particularly high molecular weight ethylene-.alpha.-olefin copolymers having a high level of .alpha.-olefin incorporation.

Abstract: The invention encompasses late transition metal catalyst systems and their use in polymerization processes, particularly in solution, 2-phase suspension and super-critical phase polymerization of ethylene-containing polymers. Preferred embodiments include the use of a late transition metal catalyst system comprising a Group 8, 9, 10, or 11 metal complex stabilized by a bidentate ligand structure for polymerization under elevated ethylene pressure, or concentration, conditions.

Abstract: The present invention relates to a gas phase process for the polymerization of monomer(s) utilizing a metallocene catalyst system to produce easy processing polyolefin polymers.

Abstract: Described are certain monocyclopentadienyl Group IV B metal compounds, catalyst systems comprising such monocyclopentadienyl metal compounds and an activator, and a process using such catalyst systems for the production of polyolefins, particularly high molecular weight ethylene-.alpha.-olefin copolymers having a high level of .alpha.-olefin incorporation.