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7615637 |
Transition metal complexes with (pyridyl)imidazole ligands
Novel transition metal complexes of iron, cobalt, ruthenium, osmium, and vanadium are described. The transition metal complexes can be used as redox mediators in enzyme-based electrochemical...
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7612009 |
Process for homo-or copolymerization of conjugated olefines
Metal complexes, catalyst compositions containing the metal complexes, and processes for making the metal complexes and the catalyst compositions are described for the manufacture of polymers from...
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7612008 |
Metathesis catalysts
The invention relates to polymeric transition metal catalysts, to processes for preparing them, to intermediates and also to the use of the transition metal catalysts as catalysts in organic...
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7605105 |
Transition metal polymerization catalysts, their synthesis and use in olefin polymerization
A transition metal ligand complex has the following formula:
wherein R 1 and R 2 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R...
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7601667 |
Sulfonate catalyst and method of producing alcohol compound using the same
A sulfonate catalyst represented by the formula below and a ketone compound are placed in a solvent, and the ketone compound is hydrogenated by mixing in the presence of hydrogen to produce an...
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7598200 |
Ionic liquids for heterogenising metallocene catalysts
The present invention discloses a method for preparing an heterogeniseded catalyst component comprising the steps of: a) providing a halogenated precursor component of formula (I) —X—[—CH 2...
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7597872 |
Process for treating a gas containing hydrogen sulphide and sulphur dioxide
A process for treating a gas containing hydrogen sulphide (H 2 S) and sulphur dioxide, contacting the gas
at a suitable temperature with an organic solvent containing at least a soluble...
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7591942 |
Bulk bi-metallic catalysts made from precursors containing an organic agent
Bulk bi-metallic catalysts for use in the hydroprocessing of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor containing an...
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7582586 |
Supported catalysts with controlled metal cluster size
There is disclosed a process for producing a catalyst. The process includes the steps of: a) combining a dendrimer polymer and metal salt in solution forming a metal ion complex; b) exposing the...
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7566677 |
De-foaming spray dried catalyst slurries
A method for preparing a spray dried catalyst and a low viscosity, low foam spray dried catalyst system for olefin polymerization are provided. In one aspect, the method includes preparing a...
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7547783 |
Transition metal complexes
A transition metal complex which is a bis-arylimine pyridine MX n complex or a [bis-arylimine pyridine MXp+][NC−]q complex comprising a bis-arylimine pyridine ligand and M is a transition metal...
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7544632 |
Bulk Ni-Mo-W catalysts made from precursors containing an organic agent
Novel bulk tri-metallic catalysts for use in the hydroprocessing of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor...
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7541481 |
Monocyclopentadienyl complex
Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst...
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7541413 |
Olefin polymerization catalysts, their synthesis and use
A catalyst system for the polymerization or copolymerization of α-olefins comprises a bis(imino)pyridyl complex of a transition metal on a support having an aluminum halide and/or an alkylaluminum...
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7541307 |
Method for manufacturing an optically active hydroxymethylated compound and a catalyst therefore
A silicon enolate represented by the following formula (Formula 1)
(in the formula, R 5 to R 7 represent hydrogen atoms, aliphatic hydrocarbon groups, monocyclic or polycyclic alicyclic...
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7538235 |
Process for preparing a catalyst, the catalyst, and a use of the catalyst
A process for preparing an epoxidation catalyst comprising silver and a high-selectivity dopant on a support, which process comprises
depositing a base having a pK b of at most 3.5 when...
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7538061 |
One-step production of 1,3-propanediol from ethylene oxide and syngas with a cobalt-iron catalyst
Disclosed is a new catalyst composition comprising a bimetallic Co—Fe catalyst, optionally complexed with a ligand selected from a N-heterocycle, phosphine, or porphorine ligand, that provides a...
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7531602 |
Polymer blends
A blend of polymers comprising from 5 to 95 weight % of a polymer having a high molecular weight made using a single site type catalyst and from 95 to 5 weight % of a polymer having a lower...
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7507782 |
Transition-metal complexes with tridentate, nitrogen-containing ligands
Transition metal complexes with tridentate, nitrogen-containing, uncharged ligand systems, a catalyst system comprising at least one of the transition metal complexes, the use of the catalyst...
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7501373 |
Polymerization catalyst for polyester production, polyester, and process for producing polyester
Embodiments of the present invention are directed to a polymerization catalyst used to produce polyester. The catalyst comprises at least one metal-containing component, excluding antimony or...
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7498390 |
Chromium complexes and their use in olefin polymerization
A composition having the formula I
where R 1 and R 2 are independently hydrogen, C 1 to C 12 linear and branched alkyl, C 3 to C 12 cycloalkyl, aryl, C 1 to C 12 alkoxy, F, Cl, SO 3 , C...
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7495134 |
Carbonylation method by adding secondary sterically hindered amines
The invention relates to a process for reaction of a carbonylatable compound using a metal complex catalyst comprising a metal of transition group VIII and an organophosphorus ligand and in the...
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7495131 |
Blowing catalyst compositions containing hydroxyl and surface active groups for the production of polyurethane foams
Tertiary amines useful as catalysts for preparing polyurethane foams are provided. Tertiary amines are employed to catalyze the trimerization reaction of isocyanates and the reaction between...
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7482451 |
Organic light emitting materials with anionic ligand
Emissive phosphorescent organometallic compounds that produce electroluminescence and organic light emitting devices employing such emissive phosphorescent organometallic compounds are provided....
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7482414 |
Transition metal complex ligand and olefin polymerization catalyst containing transition metal complex
The invention provides a transition metal complex of formula (3) below:
wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are the same or different and each independently...
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7479531 |
Olefin polymerization catalyst system useful for polar monomers
This invention relates to copolymers produced by a polymerization method comprising contacting at least one olefin monomer, at least one polar monomer, an optional activator, and a catalyst...
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7479529 |
Fluoralcohol leaving group for non-metallocene olefin polymerization catalysts
A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula α a β b γ g MX n wherein M is a metal; X is a...
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7465796 |
Transition metal complexes with (pyridyl)imidazole ligands
Novel transition metal complexes of iron, cobalt, ruthenium, osmium, and vanadium are described. The transition metal complexes can be used as redox mediators in enzyme-based electrochemical...
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7465688 |
Process for the isomerization of metallocene compounds
An isomerization process comprising the step of contacting a slurry or a solution comprising the meso or meso-like form of one or more bridged metallocene compounds of group 4 of the Periodic Table...
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7462731 |
Processes for the preparation of heterocyclic hydroxyamines and intermediates and catalysts for use therein
A process for the preparation of a compound of Formula (1):
wherein: X is S, O or NR 3 , wherein R 3 is H or an organic group; R is H or an organic group; R 1 and R 2 each independently are...
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7446214 |
Method for purifying oxybisphthalic anhydrides
A method for purifying dianhydrides is provided. In one aspect, purified oxybisphthalic anhydrides, intermediates useful in the preparation of polyetherimides are provided. In one embodiment, a...
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7442819 |
Catalysts for olefin polymerization or oligomerization
Novel iron and cobalt complexes of certain novel tricyclic ligands containing a “pyridine” ring and substituted with two imino groups are polymerization and/or oligomerization catalysts for...
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7442750 |
Supported olefin polymerization catalyst
Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a...
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7439379 |
Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same
The present invention relates to a transition metal complex represented by the formula (I):
wherein M represents a Group 4 transition metal;
—Y— represents (a): —C(R 1 )(R 20 )-A-,...
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7439205 |
Tridentate metal catalyst for olefin polymerization
In accordance with the present invention, there is provided a transition metal olefin polymerization catalyst component characterized by the formula:
where, M is a Group IV or a Group IV...
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7435701 |
Catalytic composition and its preparation and use for preparing polymers from ethylenically unsaturated monomers
A catalytic composition, including a neutral metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using...
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7431793 |
Process for bonding substrates or parts and system including cyanoacrylate adhesive and accelerator composition
An activator composition for accelerating hardening and achieving cure-through-volume of cyanoacrylate adhesives) comprising; (a) one or more compounds selected from the group consisting of :(i)...
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7429684 |
Process for oligomerization of ethylene to linear α-olefins
A process for preparing α-olefins from ethylene wherein the α-olefins are substantially free of olefins having greater than 12 carbon atoms comprises contacting ethylene under oligomerization...
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7423101 |
Catalyst composition and use thereof
The present invention is directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, mono- or di-anionic tridentate nitrogen/oxygen based ligands that are...
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7420058 |
Compound for molecular electronic device having thiol anchoring group, method of synthesizing the compound, and molecular electronic device having molecular active layer obtained from the compound
Provided are a compound for a molecular electronic device which includes a terpyridine-ruthenium organic metal compound including a thiol anchoring group of the formula below, a method of...
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7417006 |
Catalyst system for the polymerization of olefins
A salt of formula (I)
[HE o R 1 3 ] + [T 1 T 2 ] − (I)
wherein E o is a...
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7410927 |
Catalysts for olefin polymerization
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a...
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7410926 |
Polymerization process using a supported, treated catalyst system
The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system...
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7399874 |
Catalyst compound containing divalent tridentate ligand
This invention relates to a catalyst compound represented by the formula:
wherein:
M is a Group 3 to 12 transition metal; each R a is, independently, a hydrogen, a hydrocarbyl group, a...
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7390868 |
Catalyst for polycarbonate production and process for producing polycarbonate
Provided are a catalyst for producing polycarbonate comprising a reaction product obtained by reacting (a) a catalyst carrier containing nitrogen or phosphorus with (b) a palladium compound and (c)...
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7390861 |
Cationic group-3 catalyst system
A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by an anionic multidentate ancillary ligand and two...
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7390765 |
Catalyst of reaction product of polyisocyanate and tertiary amino group-containing amine, alcohol or polyol
Low-cure powder coating compositions are disclosed. The compositions comprise a polyepoxide and a material having the structure
wherein R 1 is an organic radical having 6 to 25 carbon atoms; R...
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7388062 |
Group IIIb metal complexes with “constrained geometry” fluorenyl based ligands
The present invention discloses a metallocene catalyst component based on a Group IIIb metal of the periodic Table and a bridged heteroatom-fluorenyl ligand. It also discloses its method of...
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7387980 |
Methods of using heterocycle-amine ligands, compositions, complexes, and catalysts
Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations such as the polymerization of...
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7384886 |
Methods of preparation of an olefin oligomerization catalyst
A method of making a catalyst for use in oligomerizing an olefin comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and...
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