The present invention relates, inter alia, to methodologies for the synthesis, screening and characterization of organometallic compounds and catalysts (e.g., homogeneous catalysts). The methods of the present invention provide for the combinatorial synthesis, screening and characterization of libraries of supported and unsupported organometallic compounds and catalysts (e.g., homogeneous catalysts). The methods of the present invention can be applied to the preparation and screening of large numbers of organometallic compounds which can be used not only as catalysts (e.g., homogeneous catalysts), but also as additives and therapeutic agents.

Combinatorial Synthesis and Analysis of Organometallic Compounds and Catalysts

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefms is also provided.

Polymerization catalysts and process for producing bimodal polymers in a single reactor

This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging η 5 -cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-bridging η 5 -cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with a bimodal molecular weight distribution.

Dual metallocene catalysts for polymerization of bimodal polymers

Group 4 metal complexes of the constrained geometry type, catalysts derived therefrom and polymerization processes using the same, characterized by a nitrogen containing aliphatic or cycloaliphatic moiety that is substituted with one or more aryl groups, an aryl-substituted silane bridging group, or one or more Group 14 organometalloid substituted hydrocarbyl substituents on the metal.

Substituted group 4 metal complexes, catalysts and olefin polymerization process

This invention relates to heteroatom substituted cyclopentadienyl-containing ligands, metal complexes containing these ligands, catalyst systems prepared from catalyst components comprising these metal complexes. The metal complexes contain a 'a' heteroatom-Cp bond or a ring heteroatom-Cp bond in the 3-position of the Cp. In preferred metal complexes the ligand is a 3-heteroatom substituted indenyl group. The catalyst systems for olefin polymerization may be used at high temperatures, are highly active and produce high molecular weight polymer.

3-heteroatom substituted cyclopentadienyl-containing metal complexes and olefin polymerization process

The invention relates to a new catalyst composition which is suitable for the polymerization of an olefin and which comprises a reduced transition metal complex and a co-catalyst. The invention is characterized in that the transition metal complex consists of a reduced transition metal, chosen from groups 4-6 of the Periodic Table of the Elements, with a multidentate monoanionic ligand and with two monoanionic ligands. In particular the reduced transition metal is titanium (Ti).

Catalyst composition and process for the polymerization of an olefin

The invention relates to an indenyl compound of the general formula: R'Ind-M-(Cp)Qk in which the symbols have the following meanings: Ind: an indenyl group, R': a substituent, other than hydrogen, to the Ind group, Cp: a cyclopendadienyl group, M: a transition metal from group 3, 4, 5 or 6 of the Periodic System of Elements, Q: a ligand to M and k is an integer linked to the valence of M The invention is characterized in that the R' group is bound to the Ind group at the 2-position The indenyl compound is a catalyst component for the polymerization of olefins The invention also relates to polymers obtainable with such indenyl compounds

Indenyl compounds and catalyst components for the polymerization of olefins.

The invention relates to a process for the preparation of a polymer comprising at least one aliphatic or aromatic hydrocarbyl C 2-20 olefin in the presence of an ionic catalyst comprising an organometallic compound and an activator, and optionally a scavenger, characterized in that the organometallic compound is a compound according to formula (1): where: M is a metal of group 3, 4, 5, 6 or 7, or the lanthanide series, and p is the valency of the metal M, A represents a neutral or anionic spectator ligand whose valency v is 0, 1 or 2, and q is an integer denoting the number of spectator ligands A, Z is an optional bridging moiety, n is the integer number of parallel bridging moieties Z, Y is an amidine-containing spectator ligand represented by formula (2): wherein the amidine-containing ligand is covalently bonded to the metal M via the imine nitrogen atom, Sub 1 is a substituent, which comprises a group 14 atom through which Sub 1 is bonded to the imine carbon atom. Sub 2 is a substituent, which comprises a heteroatom of group 15-16, through which Sub 2 is bonded to the imine carbon atom, r is an integer >0, L is an optional neutral Lewis basic ligand, j is an integer denoting the number of neutral ligands L, and X is an anionic ligand. The invention further relates to a organometallic compound according to formula (1) and a process for the preparation of this compound as well as to a UHMWPE having a weight average molecular weight of at least 4.000 kg/mol and a molecular weight distribution M w /M n of less than 2.6.

Polymerization Catalyst Comprising Amidine Ligand

The invention relates to a new catalyst component for the polymerization of olefins comprising a compound of formula CyLMZp, wherein M is a Group 4-6 metal, Z is an anionic ligand, p is the number of anionic ligands, Cy is a mono- or polysubstituted cyclopentadienyl-type ligand and L is a guanidinate ligand of the formula wherein: each A is independently selected from nitrogen or phosphorus and R, R1, R2 and R3 are independently selected from the group consisting of hydrogen, hydrocarbyl, silyl and germyl residues, substituted or not with one or more halogen, amido, phosphido, alkoxy, or aryloxy radicals. The invention also relates to a catalyst system for the polymerization of olefins and a process for the polymerization of at least one olefin having 2 to 20 carbon atoms.

Catalyst component for the polymerization of olefins having a guanidinate ligand

The invention relates to a catalyst system for the polymerization of olefins comprising a metal complex of formula CyLMD and an activating cocatalyst, wherein: - M is titanium; - Cy is a cyclopentadienyl-type ligand; - D is a diene; - L is an amidinate-containing ligand of formula (1), wherein the amidinate-containing ligand is covalently bonded to the titanium via the imine nitrogen atom, Sub1 is a substituent, which comprises a group 14 atom through which Sub1 is bonded to the imine carbon atom, Sub2 is a substituent, which comprises a nitrogen atom, through which Sub2 is bonded to the imine carbon atom, and the activating cocatalyst is a boron compound represented by the general formula BR1R2R3, wherein B is a boron atom in the trivalent valence state and R1, R2 and R3 are individually selected from the group consisting of halogen atom, hydrocarbyl, halogenated hydrocarbyl, substituted silyl, alkoxy or di-substituted amino residue. The invention further relates to a process for the preparation of a polymer comprising at least one aliphatic or aromatic hydrocarbyl C2-20 olefin wherein the at least one aliphatic or aromatic olefin is contacted with the catalyst system of the present invention.

Gerardus Henricus Josephus Van Doremaele

Papers

Catalyst composition and process for the polymerization of an olefin

Indenyl compounds and catalyst components for the polymerization of olefins.

Polymerization Catalyst Comprising Amidine Ligand

Catalyst component for the polymerization of olefins having a guanidinate ligand

Borane activated ti catalyst system comprising amidine and diene ligand