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| Number | Title | Issue Date |
| 8080492 | Hydroconversion multi-metallic catalyst and method for making thereof A catalyst precursor for preparing a bulk multi-metallic catalyst upon sulfidation is provided. The precursor has an essentially monomodal pore volume distribution with at least 90% of the pores being macropores, and a total pore volume of at least 0.08 g/cc. The bu... | 12/20/2011 |
| 7169875 | Organometallic compositions A composition suitable for use as a catalyst for the reaction of an isocyanate compound or prepolymer thereof with an alcohol to form a polyurethane comprises a mixture of (a)an organometallic compound selected from: (i) a compound of formula M(RO)4, wher... | 01/30/2007 |
| 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 carbonyl compound and a cocatalyst metal compound ligated with a lig... | 10/03/2006 |
| 7022800 | Organosiloxane compositions A moisture curable composition capable of cure to an elastomeric body, comprising a polymeric material having not less than two hydroxyl or hydrolyzable groups an alkoxysilane curative and a catalyst comprising: a mixture and/or re... | 04/04/2006 |
| 7001864 | Catalyst composition for production of a polyurethane resin, and method for producing a polyurethane resin A catalyst composition for production of a polyurethane resin, which comprises a metal complex catalyst represented by the following formula (1): M(acac)n (1) wherein M represents Mn, Fe, Co, Ni, Cu, Zn, Zr, Ti, Hf, Al or Th, acac... | 02/21/2006 |
| 6914105 | Continuous process for making polymers in carbon dioxide A method for carrying out the continuous polymerization of a monomer in a carbon dioxide reaction medium comprises the steps of: (a) providing an apparatus including a continuous reaction vessel and a separator; (b) carrying out a polymerization reaction in the reac... | 07/05/2005 |
| 6903044 | One-step production of 1,3-propanediol from ethylene oxide and syngas with a catalyst with a N-heterocyclic ligand Disclosed is a new catalyst composition comprising a bimetallic Co—Ru catalyst complexed with a N-heterocylcic ligand that is effective, economical, and provides improvements in oxidative stability in the one step synthesis of 1,3-propanediol (1,3-PDO) from ethyle... | 06/07/2005 |
| 6900156 | Method for preparing metal cyanide catalysts using zero valent metals Metal cyanide catalyst dispersions in initiator compounds and/or polyether are prepared by reacting an acidic metal cyanide compound a zero valent metal in a medium that is a solvent for the acidic metal cyanide compound. The resulting catalyst slurry may be combine... | 05/31/2005 |
| 6852865 | Catalytic carbonylation of three and four membered heterocycles Epoxides, aziridines, thiiranes, oxetanes, lactones, lactams and analogous compounds are reacted with carbon monoxide in the presence of a catalytically effective amount of catalyst having the general formula [Lewis acid]z+{[QM(CO)x]w− | 02/08/2005 |
| 6852664 | Double metal cyanide catalysts for the preparation of polyether polyols The present invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by a polyaddition reaction between alkylene oxides and starter compounds having active hydrogen atoms, wherein the catalyst contains a) at least one ... | 02/08/2005 |
| 6821920 | Polymerization catalysts and processes therefor Novel catalyst systems which comprise diimine nickel complexes comprising additional ligands selected from the group consisting of acetylacetonate, hexaflourylacetylacetonate, halogens and mixtures thereof can be used with methylaluminoxane in slurry polymerization ... | 11/23/2004 |
| 6800583 | Suspension of multimetal cyanide compounds, their preparation and their use Catalyst suspensions for the ring-opening polymerization of alkylene oxides comprise a) at least one multimetal cyanide compound having a crystalline structure and a content of platelet-shaped particles of at least 30% by weight, based on the multimetal cyani... | 10/05/2004 |
| 6753289 | One-step production of 1,3-propanediol from ethylene oxide and syngas with a catalyst with a phospholanoalkane ligand Disclosed is a novel class of modified ruthenium catalysts useful in the one step synthesis of 1,3-PDO comprising (a) a cobalt component comprising one or more non-ligated cobalt compounds; and (b) a ruthenium component comprising in major part a ruthenium carbonyl ... | 06/22/2004 |
| 6747152 | Catalytic compositions and methods for asymmetric allylic alkylation Complexes of a selected class of chiral ligands with molybdenum, tungsten or chromium, preferably molybdenum, are effective as catalysts in highly enantioselective and regioselective alkylation of allylic substrates. ... | 06/08/2004 |
| 6717018 | Production of oxygenated products A process for producing oxygenated products from an olefinic feedstock, which process includes reacting, in a hydroformylation reaction stage, an olefin feedstock with carbon monoxide and hydrogen at elevated temperature and superatmospheric pressure in the presence... | 04/06/2004 |
| 6706656 | One step process for preparing a 1,3-diol The invention provides a process for an improved oxirane hydroformylation catalyst, the improved oxirane hydroformylation catalyst, and a one step process for preparing a 1,3-diol in the presence of such a catalyst. One process for preparing the hydroformylation cat... | 03/16/2004 |
| 6693219 | Epoxide stabilization of fluorophosphite-metal catalyst system in a hydroformylation process A process for stabilizing a fluorophosphite ligand in a hydroformylation reaction mixture having an -olefin, hydrogen, carbon monoxide and a catalyst composition having a combination of a rhodium containing compound and one or more fluorophosphite ... | 02/17/2004 |
| 6664462 | Metal complex having ଲ-diketonate, process for production thereof, photoelectric conversion element, and photochemical cell A metal complex having a ଲ-diketonate represented by the following formula (1): ##STR1## wherein M represents a metal atom of the VIII group, R1, R2 and R3 represent a group or an atom selected from the group consist... | 12/16/2003 |
| 6555717 | Catalytic dehydroxylation of diols and polyols Secondary alcohols, specifically diols and polyols, are dehydroxylated to the corresponding primary alcohols using a homogeneous organometallic ruthenium complex catalyst.... | 04/29/2003 |
| 6509288 | Polymerization catalysts Catalyst system suitable for preparing substantially terminally unsaturated atactic polymers or copolymers of -olefins having a molecular weight (Mn) in the range 200-500,000. The catalyst system includes a metallocene of the formula: [Rm | 01/21/2003 |
| 6492480 | Method of polymerizing a silalkylenesiloxane Disclosed is a method for the preparation of a linear polysilalkylenesiloxane from four- to seven-membered cyclic silalkylenesiloxane by subjecting the cyclic silalkylenesiloxane to ring opening polymerization by using as a catalyst a polynuclear rut... | 12/10/2002 |
| 6455649 | Catalyst for producing living olefin polymer and process for producing the polymer A catalyst comprising an organoaluminum compound and a vanadium chelate compound having the lability to cause olefins to undergo living coordination polymerization is contacted with a terminal diolefin to obtain a catalyst for living polymer production. W... | 09/24/2002 |
| 6455740 | Process to separate a group 8-10 metal/phosphite ligand complex from an organic liquid Process to separate a group 8-10 metal/phosphite ligand complex from an organic liquid mixture, wherein the following steps are performed (1) contacting the organic liquid with a support having bonded thereto an organophosphine ligand and separating the organi... | 09/24/2002 |
| 6433113 | Ring-opening metathesis polymerization (ROMP) of cyclo-olefins with molybdenum catalysts A polymerization system for ring opening polymerization of cycloolefins, comprising a catalyst [MoOX2 L2 ], a Lewis acid as co-catalyst, and a chain-transfer agent, ##STR1## wherein (1) both X groups are the same halogen atom selecte... | 08/13/2002 |
| 6372879 | Polyester polycondensation with catalyst and a catalyst enhancer The present invention is based upon the discovery that nontitanyl oxalates can enhance the catalytic functionality of titanyl oxalate catalysts. This invention provides a novel catalytic composition containing a titanyl oxalate catalyst and a metallic oxa... | 04/16/2002 |
| 6335304 | Metal salts of phosphoric acid esters as cross linking catalysts A metal (M) alkyl acid phosphate catalyst for the reaction of an epoxy compound with a carboxyl compound to provide a coating formulation that is stable at room temperature; that is humidity resistant, and non-yellowing, wherein the alkyl acid phosphate h... | 01/01/2002 |
| 6258925 | Polyester polycondensation with titanyl oxalate catalyst and a catalyst enhancer The present invention is based upon the discovery that nontitanyl oxalates can enhance the catalytic functionality of titanyl oxalate catalysts. This invention provides a novel catalytic composition containing a titanyl oxalate catalyst and a metallic oxa... | 07/10/2001 |
| 6153167 | Generation of metal-carbonyl standards for the calibration of spectroscopic systems Methods and apparatus for preparing gaseous compositions comprising a metal carbonyl, preferably at ppm concentration, are disclosed. The methods comprise placing metal, preferably in the form of filings, of the metal carbonyl to be produced into a first ... | 11/28/2000 |
| 6075102 | Polymerization catalyst and process for producing polymers The present invention provides a polymerization catalyst comprising (a) a specific transition metal compound, (b) (i) a compound which can form a complex by reaction with the transition metal compound of component (a) or (ii) a specific compound containin... | 06/13/2000 |
| 6071848 | Process for the hydroxylation of aromatic hydrocarbons The invention relates to a process for the hydroxylation of aromatic hydrocarbons by direct oxidation with hydrogen peroxide. The process is carried out in the presence of a catalyst comprising: iron, administered as an inorganic salt; a carboxylic acid of an ... | 06/06/2000 |
| 6037507 | Oxidation process of branched aliphatic hydrocarbons and process for producing the oxide A non-cyclic branched aliphatic hydrocarbon (e.g., isobutane) is oxidized with oxygen in the presence of an oxidation catalyst comprising an imide compound of the following formula (1) (e.g., N-hydroxyphthalimide) or an oxidation catalyst comprising the i... | 03/14/2000 |
| 5958197 | Catalysts for gas diffusion electrodes A gas diffusion electrode comprising an electrically conductive web provided on at least one side thereof with a coating containing a rhodium--rhodium oxide catalyst on a carbon black support and a method for the preparation of the rhodium--rhodium oxide ... | 09/28/1999 |
| 5929289 | Stabilization of phosphite ligands in hydroformylation process The present invention provides a hydroformylation process comprising: (1) forming a reaction mixture containing: (a) an olefinic compound, (b) hydrogen, (c) carbon monoxide, (d) a phosphite in which each phosphorus atom is bonded to three oxygen atoms and... | 07/27/1999 |
| 5916432 | Process for dispersing transition metal catalytic particles in heavy oil A transition metal salt, preferably ammonium heptamolybdate, is dissolved in water to provide a solution containing the dispersed catalyst precursor. The solution is atomized by passing it through an atomizing nozzle submerged in hot oil. The minute atomi... | 06/29/1999 |
| 5900521 | Catalysts for converting methane or purified natural gas, preparation thereof, and process for preparation of ethylene using the catalysts Catalysts for preparing ethylene by conversion of methane or purified natural gas and preparation thereof, and process for preparation of ethylene by direct conversion of methane or purified natural gas using said catalysts. The catalysts have the formula... | 05/04/1999 |
| 5846897 | Zirconium urethane catalysts The present invention is directed to novel metal organocomplexes as catalysts for the reaction of compounds with isocyanate and hydroxy functional groups to form urethane and/or polyurethane and the process employing such catalysts. More particularly, the... | 12/08/1998 |
| 5847204 | Process for producing an iridium solution and use of same as catalyst An iridium-based solution is prepared by contacting components in a liquid phase containing (a) a carbonylated iridium compound, (b) hydriodic acid, a precursor of such an acid, or mixture thereof, and (c) a solvent; under a total pressure of between 1 an... | 12/08/1998 |
| 5789333 | Catalyst system comprising a first catalyst system tethered to a supported catalyst The present invention provides new catalyst formats which comprise a supported catalyst tethered to a second and different catalyst by a suitable tethering ligand. A preferred system comprises a heterogeneous supported metal catalyst tethered to a homogen... | 08/04/1998 |
| 5759941 | Process for the preparation of dialkyltin dialkoxide from alkyl carbamate and alcohol A process for making a catalyst product which comprises reacting dialkyltin oxide with an alcohol and the corresponding alkyl carbamate at a temperature in the range between about 160 to 190° C. and at an autogenous pressure, wherein the catalyst product... | 06/02/1998 |
| 5756855 | Stabilization of phosphite ligands in hydroformylation process The present invention provides a hydroformylation process comprising: (1) forming a reaction mixture containing: (a) an olefinic compound, (b) hydrogen, (c) carbon monoxide, (d) a phosphite in which each phosphorus atom is bonded to three oxygen atoms and... | 05/26/1998 |
