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7572750 |
Catalysts and processes for their preparation
A hybrid homogeneous-heterogeneous catalyst containing catalytic groups, wherein the catalytic activity of the catalyst is largely provided as a result of the interaction of catalytic groups in a...
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7544762 |
Catalyst for preparation of polyester and process for preparing polyester using the catalyst
A polyester having a good color tone (a high L value and a low b value) and a low acetaldehyde content is obtained by using a catalyst containing a reaction product of (A) a titanium compound (1)...
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7514387 |
Reformer and method of making the same
A reformer comprises a housing; a substrate disposed in the housing, wherein the substrate comprises a stabilized aluminate and a stabilized zirconate; and a catalyst disposed on the substrate.
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7488360 |
Catalysts, reactors and methods of producing hydrogen via the water-gas shift reaction
The reaction of carbon monoxide with steam over an alkali-modified ruthenium-on-zirconia catalyst has been found to yield surprisingly high yields of hydrogen gas at relatively low temperatures....
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7442665 |
Preparation and screening of crystalline inorganic materials
Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is...
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7435840 |
Method for producing orthometalated and orthosubstituted metallocenes
The invention relates to compounds having a structural element of formula (I) in an aromatic hydrocarbon ring, wherein: M represents —Li, —MgX 3 , (C 1 -C 18 -Alkyl) 3 Sn—, —ZnX 3 or...
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7390764 |
Organometal catalyst compositions
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for...
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7387979 |
Magnesium compound, solid catalyst component for olefin polymerization, catalyst for olefin polymerization and method for producing polyolefin
A magnesium compound obtained by reacting metallic magnesium having a sphericity (S) of less than 4.00, the sphericity (S) being represented by the following formula (I), an alcohol, and a halogen...
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7351678 |
Catalyst systems for Ziegler-Natta propene polymerisation
The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R...
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7348288 |
Catalyst composition
A process comprises passing a contaminated gaseous stream through a photocatalytic stage and, thereafter, through a catalytic stage.
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7341971 |
Production of olefin polymerization catalysts
The invention provides a process for producing an olefin polymerization catalyst, comprising an organometallic compound of a transition metal or of an actinide or lanthanide, in the form of solid...
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7307035 |
Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom
The present invention relates to an adduct comprising M g Cl 2 , an alcohol (ROH) in which R is a C1-C10 hydrocarbon group, and a compound containing a transition metal M selected from the Groups 3...
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7235510 |
Catalysts
A tethered ligand comprising the reaction product of an organofunctional silica and a ligand containing a functional group capable of reaction with said organofunctional silica, wherein the...
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7223712 |
Catalyst component for the (CO)polymerization of olefins
An internal electron-donor compound selected from the 1,3-diethers of formula (I)
in which R is a C 1 –C 10 alkyl group, R 1 is a linear or branched primary alkyl radical having at least...
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7217676 |
Hydrophobization and silica for supported catalyst
This invention relates to a catalyst support comprising the result of the combination of:
(a) a support comprising hydroxyl groups; (b) a capping agent comprising a boron containing Lewis acid;...
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7214641 |
Catalyst and hydrogenation of carbonyl compounds in the liquid phase using the catalyst
The present invention provides a process for hydrogenating carbonyl compounds, in particular C 4 -dicarboxylic acids to mixtures of tetrahydrofuran and gamma-butyrolactone, over supported rhenium...
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7211538 |
Catalytic systems for the polimerization and copolimerization of alpha-olefins
Catalyst component for the polymerization of alpha-olefins in solution, in suspension, in gas phase at low and high pressure and temperature or in mass at high pressures and high or low...
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7208642 |
Process for preparation of formate esters or methanol and catalyst therefor
A production process and a catalyst are provided, which can be less decreased in activity of the catalyst even when CO 2 , water and the like are present in the starting material and/or the...
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7208436 |
Catalyst components for the polymerization of olefins
Catalyst components for the polymerization of olefins CH 2 ═CHR, wherein R is hydrogen or a hydrocarbon radical having 1–12 carbon atoms, comprising Mg, Ti, Cl, OR groups, where R is a C1–C10...
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7208435 |
Solid catalyst component for olefin polymerization and catalyst
A solid catalyst component for polymerization of olefins prepared by contacting (a) a dialkoxy magnesium compound, (b) a tetra-valent titanium halide, and (c) an electron donor compound of the...
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7199212 |
Polymerization catalyst for polyesters, polyesters produced with the same and process for producing polyesters
A novel polymerization catalyst for polyesters, which does not contain any germanium or antimony compound as the main component; polyesters produced with the catalyst; and a process for producing...
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7189674 |
Supported catalyst composition for polymerization of olefins, method for preparing the same and process for polymerization using the same
Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) an oxygen containing polymer...
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7176158 |
Polymerization catalyst composition
Copolymerization of Ni(H) or Co(II) acenaphthene diimine complexes containing olefinic substituents on aryl groups in the presence of a free radical initiator results in polymerized late transition...
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7172987 |
Bimetallic catalyst, method of polymerization and bimodal polyolefins therefrom
Bimetallic catalysts, and methods of producing a bimetallic catalyst comprising a modified Ziegler-Natta catalyst and a metallocene are provided, in one embodiment the method including combining:...
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7157398 |
Covalently fixed nonmetallocenes, process for preparing them and their use for the polymerization of olefins
The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use thereof for polymerizing olefins.
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7153804 |
Catalyst component for ethylene polymerization, the preparation thereof and catalyst comprising the same
The present invention provides a catalyst component for ethylene polymerization, a process for preparing the same, a catalyst comprising the same, and a process for polymerizing ethylene using the...
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7151071 |
Method for preparation of a solid titanium catalyst for olefin polymerization
The present invention relates to a method for preparing a solid titanium catalyst for olefin polymerization. The method for preparing a solid titanium catalyst for olefin polymerization according...
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7151070 |
Chiral catalyst, process for preparing the same and its use in the oxidate coupling of naphthols
The compound of this invention is a useful catalyst for the oxidative coupling of naphthol. Its originality lies in that it is a novel vanadium complex of Schiff's base formed by a chiral amino...
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7148173 |
Catalytic systems for the polymerization and copolymerization of alpha-olefins
Heterogeneous catalytic compositions obtained by reacting a porous inorganic support with an alumoxane and subsequently supporting at least one metallocene compound thereon. A process for...
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7144614 |
Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester
This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of...
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7128892 |
Process of forming ultrastable porous aluminosilicate structures
Mesoporous hexagonal, cubic, lamellar, wormhole, or cellular foam aluminosilicates, gallosilicates and titanosilicates derived from protozeolitic seeds using an ionic structure directing agent are...
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7126035 |
Catalyst composition for oxychlorination
The present invention relates to a catalyst composition for the oxychlorination of ethylene, comprising a mixture of metal salts on a support, where said metal salts are applied to the support in...
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7125819 |
Catalyst preparation
The invention relates to a process for the preparation of an epoxidation catalyst, which process involves impregnating a silicon containing carrier with a gas stream consisting of titanium halide....
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7122611 |
Catalyst for polymerization of norbornene
This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing...
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7115540 |
Synthesis of aliphatic 1,3-diols utilizing reduced ligand concentration and water extraction
This invention is a process for synthesizing aliphatic 1,3-diols in one step by hydroformylation and hydrogenation of oxirane, carbon monoxide, and hydrogen employing a catalyst comprising a cobalt...
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7097933 |
Catalyst for fuel cell oxygen electrodes
A catalyst having catalytically active material supported on a carrier matrix. The catalytically active material may be a mixed-valence, nanoclustered oxide(s), an organometallic material or a...
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7094725 |
Biphenyldiphosphine compounds
The present invention provides compounds of the formula
wherein
R is optionally substituted lower alkyl, cycloalkyl or aryl; R′ is alkyl or aryl; n is zero or an integer of 1 or 2;
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RE39246 |
Esterification catalysts and processes therefor and therewith
A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, hypophosphorous acid or its metal salt, water and optionally a solvent. The complexing agent...
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7081427 |
Solid catalyst component for olefin polymerization
A solid catalyst component for olefin polymerization comprising titanium, magnesium and a compound of the general formula (I)
wherein R 1 and R 2 are independently a C 3 straight or branched...
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7067451 |
Soluble magnesium complexes useful for the production of polyolefin catalysts and catalysts prepared therewith
A method of forming a polyolefin catalyst component includes halogenating metal complexes. The metal complexes result from reacting a metal alkoxide with an alcohol-ether. A particular non-limiting...
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7045481 |
Nanocatalyst anchored onto acid functionalized solid support and methods of making and using same
Supported catalysts include a solid support such as silica that is functionalized to have inorganic acid functional groups attached thereto. Active catalyst particles are supported on the...
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7033970 |
Process for preparing a diether-based catalyst component
A process for preparing a diether-based catalyst component in which: a) a slurry is obtained by contacting a solid support comprising a magnesium halide or a precursor thereof, one or more...
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7033837 |
Method for combinatorial material development using differential thermal images
A method for the combinatorial development of materials in which heat changes caused by chemical or physical processed with materials of combinatorial libraries are visualized using heat different...
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7022642 |
Electrocatalyst and method of manufacturing the same
An electrocatalyst contains a conductive support which loads a noble metal thereon. In the electrocatalyst of the present invention, the noble metal is formed by adding a reducing agent for an ion...
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6998449 |
Latent metallocene catalyst systems for olefin polymerization
A metallocene catalyst may be temporarily and reversibly passivated by contact with an effective amount of a passivating compound selected from the group of oxygen, oxygen-containing compounds, and...
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6977235 |
Catalyst systems comprising a calcined chromium catalyst and a non-transition metal cyclopentadienyl cocatalyst
According to an embodiment, catalyst systems for polymerizing olefins include a catalyst comprising chromium and a cocatalyst comprising a substituted or unsubstituted non-transition metal...
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6949489 |
Solid supported catalyst usable for the polymerization of conjugated dienes, process for the preparation thereof and a process for the polymerization of conjugated dienes using this catalyst
The present invention relates to a solid supported catalyst usable for the polymerization of conjugated dienes, to a process for the preparation of said catalyst and to a process for the...
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6916761 |
Polymer-supported Lewis acid catalyst
In order to provide a novel Lewis acid catalyst, which shows high reaction activity in aqueous medium, is easily recovered, and is excellent in reusability, a Lewis acid group expressed by the...
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6916758 |
Fibrous catalyst-immobilization systems
The present invention provides a fibrous catalyst-immobilization system that can be employed for immobilizing catalysts that are subject to fluid flow within a chemical production process. The...
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6908875 |
Organometallic compositions and polyisocyanate compositions containing them
An organometallic composition, suitable for use in curing polyisocyanate compositions, includes a complex of at least one metal selected from iron, cobalt and aluminum and at least one...
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