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| Number | Title | Issue Date |
| 7799724 | Hollow beads of polyethylene The present invention discloses a method for preparing hollow beads of polyethylene of controlled morphology and size. ... | 09/21/2010 |
| 7294601 | Phosphines, transition metal complexes containing the same as the ligand, and process for production of optically active carboxylic acids [PROBLEMS] To provide a method by which desired optically active carboxylic acids may be prepared from a carboxylic acid having a carbon-carbon double bond through asymmetric hydrogenation with a catalyst consisting of a transition metal complex containing a water-s... | 11/13/2007 |
| 7217675 | Catalyst composition This invention relates to transition metal catalyst compounds represented by the formula: LMX2 wherein M is a Group 7 to 11 metal; L is a tridentate or tetradentate neutrally charged ligand that is bonded to M by least three or four nitrogen atoms, and at... | 05/15/2007 |
| 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 metal catalysts which can be used for olefin polymerization or oligo... | 02/13/2007 |
| 7148174 | Non-metallocene catalyst system The present invention describes a novel group of specific transition metal compounds, referred to as nonmetallocene compounds, and catalyst systems prepared therefrom. These catalyst systems which have become obtainable for the first time are suitable for the polyme... | 12/12/2006 |
| 7144839 | Polymerization catalysts A transition metal complex having the following Formula (A): wherein the monovalent groups R1 and R2 are —Ra, —ORb, —NRcRd, and —NHRe; the monovalent groups Ra, Rb | 12/05/2006 |
| 7141687 | N'-substituted N-acylamidine metal transition complexes and their use as catalysts The invention relates to N′-substituted N-acylamidine transition metal complexes of the general formula (I), wherein M represents a transition metal, selected from the group of metals including Ni, Cu, Ru, Rh, Pd, Os, Ir and Pt, X represents Cl, Br, triflate, meth... | 11/28/2006 |
| 7112697 | Methods for formation of aryl-sulfur and aryl-selenium compounds using copper(I) catalysts A mild, palladium-free synthetic protocol for the cross-coupling reaction of vinyl or aryl iodides and thiols or selenols using, in certain embodiments, 10 mol % CuI and 10 mol % neocuproine, with NaOt-Bu as the base, in toluene at 110 ° C. A variety of vinyl/aryl ... | 09/26/2006 |
| 7098166 | Catalyst for preparing fluorine-containing alcohol compound and a process for preparation of fluorine-containing alcohol compound A process for preparing a fluorine-containing alcohol compound, the process comprising the step of reacting water with a halogenated fluorine compound in the presence of a catalyst for preparing a fluorine-containing alcohol compound, the catalyst obtained by suppor... | 08/29/2006 |
| 7060781 | 2,6-dimethyphenol composition A 2,6-dimethylphenol composition having an m-cresol content of from 15 to 700 ppm on a weight basis has effects of drastically improving polymerization activity and particularly, improving the color tone of polyphenylene ethers. Therefore, the composition makes it p... | 06/13/2006 |
| 7008607 | Process for preparing hydrogen peroxide from the elements The present invention relates to a process for the preparation of hydrogen peroxide from oxygen or oxygen-delivering substances and hydrogen or hydrogen-delivering substances in the presence of at least one catalyst containing a metal-organic framework material, whe... | 03/07/2006 |
| 6903043 | Chiral polymeric salen catalyst, and a process for preparing chiral compounds from racemic epoxides by using them The present invention relates to chiral salen catalysts and a process for preparing chiral compounds from racemic epoxides by using them. More particularly, the present invention is to provide a chiral polymeric salen catalyst and its use for producing chiral compou... | 06/07/2005 |
| 6878665 | Diphosphines, their complexes with transisition metals and their use in asymmetric synthesis The invention relates to novel diphosphines, in optically pure or racemic form, of formula (I): in which: R1 and R2 are a (C5-C7)cycloalkyl... | 04/12/2005 |
| 6858559 | Asymmetric copper complex and cyclopropanation reaction using the same Disclosed is an asymmetric copper catalyst composition comprising, as components, (a) an optically active bisoxazoline compound of formula (1): wherein R1 and R2 | 02/22/2005 |
| 6750171 | Synthesis of P-chiral bisphospholane ligands and their transition metal complexes for use as asymmetric hydrogenation catalysts P-chiral bisphospholane ligands and methods for their preparation are described. Use of metal/P-chiral bisphospholane complexes to catalyze asymmetric transformation reactions to provide high enantiomeric excesses of formed compounds is also described. ... | 06/15/2004 |
| 6664350 | Supported polymerisation catalyst The invention relates to supported ligands and catalysts for use in the polymerization of olefinically unsaturated monomers such as vinylic monomers, comprising the use of a compound attached to support, the compound being capable of complexing with a tra... | 12/16/2003 |
| 6642327 | Late transition metal complexes, their use as catalysts and polymers therefrom The invention provides a novel metal complex which, when used with an activating cocatalyst, provides a novel catalyst composition. The invention also provides a polymerization method which utilizes the catalyst composition to produce polymers and copolym... | 11/04/2003 |
| 6608231 | Double-metal cyanide catalysts for producing polyether polyols The invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide co... | 08/19/2003 |
| 6569354 | Composition and method for bleaching a substrate The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air. A method of bleaching a substrate is provided that comprises applying to the substrate, in an aqueous medium, a specified organic subs... | 05/27/2003 |
| 6566295 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aro... | 05/20/2003 |
| 6534657 | Chiral ferrocene phosphines and their use in asymmetric catalytic reactions Ferrocene anchored chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation... | 03/18/2003 |
| 6521735 | Production process of polyphenylene ether A process for producing a polyphenylene ether by oxidative polymerization of a phenol compound using a catalyst and an oxygen-containing gas, wherein said catalyst comprises a copper compound, a bromine compound, a diamine compound of formula (1) as recit... | 02/18/2003 |
| 6506859 | Polymerization using late transition metal catalyst complexes formed in situ The invention is directed towards the formation of polymers and copolymers using late transition metal polymerization catalyst complexes which are formed in situ. In the first process step of the instant invention, a composition having the formula MXZ | 01/14/2003 |
| 6489439 | Production process of polyphenylene ether A process for producing a polyphenylene ether by oxidative polymerization of a phenol compound using a catalyst and an oxygen-containing gas, wherein the catalyst comprises a copper compound, a bromine compound, a diamine compound represented by the follo... | 12/03/2002 |
| 6479425 | Late transition metal complexes, their use as catalysts and polymers therefrom The invention provides a novel metal complex which, when used with an activating cocatalyst, provides a novel catalyst composition. The invention also provides a polymerization method which utilizes the catalyst composition to produce polymers and copolym... | 11/12/2002 |
| 6433130 | Process for preparing polymer by using copper compound The present inventors has its objects to provide a polymerization catalyst component, a copper compound which can easily be synthesized and is stable. The present invention is related to a method of producing a polymer which comprises using a copper compo... | 08/13/2002 |
| 6414099 | Single-site catalysts based on caged diimide ligands Single-site catalysts useful for polymerizing olefins are disclosed. The organometallic catalysts incorporate a Group 3 to 10 transition, lanthanide or actinide metal and a caged diimide ligand. The diimide ligands are made by a tandem Diels-Alder and pho... | 07/02/2002 |
| 6294495 | Tridentate ligand-containing metal catalyst complexes for olefin polymerization An activated tridentate-, monoanionic-ligand-based transition metal catalyst in a reduced oxidation state for olefin polymerization is disclosed. Transition metal catalyst precursors for these catalysts have the formulae: ##STR1## in which M is a tra... | 09/25/2001 |
| 6245707 | Methanol tolerant catalyst material Methanol tolerant catalyst materials and a method of making the same are provided. These novel catalyst materials are obtained by mixing together and heat-treating at least two different transition-metal-containing nitrogen chelates. In preferred embodime... | 06/12/2001 |
| 6184171 | Supported bidentate and tridentate catalyst compositions and olefin polymerization using same A heterogeneous catalyst composition suitable for olefinic polymerization and to methods of forming polyolefinic products using said composition. The catalyst composition comprises an anionic metalloid silane modified inorganic oxide and the cationic remn... | 02/06/2001 |
| 6159891 | Catalyst for bisalkoxycarbonylation of olefins, and method for production of succinate derivatives A catalyst for the bisalkoxycarbonylation of olefins comprising a noble metal compound and a phosphine chalcogenide of the following formula (1): ##STR1## wherein each of R1, R2 and R3 is, independently, an alkyl grou... | 12/12/2000 |
| 6160155 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 12/12/2000 |
| 6160154 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 12/12/2000 |
| 6140294 | Bleach and oxidation catalyst A bleach and oxidation catalyst is provided comprising a catalytically ace iron, manganese or copper complex including a specified pentadentate nitrogen-containing ligand. The metal complex can activate hydrogen peroxide or peroxyacids and provides favou... | 10/31/2000 |
| 6136746 | Poly-oxyanions as anchoring agents for metal complexes A supported catalyst comprising a support, an anchoring agent such as an isopoly-oxymetal anion or oxometal salt thereof, and a metal complex which is useful in a wide variety on organic reactions, especially the hydrogenation of substituted , ... | 10/24/2000 |
| 6077958 | Heteroaromatic diphosphines as chiral ligands Chiral diphosphines are constituted by an aromatic pentatomic biheterocyclic system, suitable to act as chiral ligands and complexes between the diphosphines and transition metals. They may be utilized as chiral catalysts in stereocontrolled reactions, su... | 06/20/2000 |
| 6040263 | Catalytic composition based on transition metal complexes, and a process for the hydrogenation of unsaturated compounds A novel non-aqueous catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is selected from the group consisting of tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexaf... | 03/21/2000 |
| 6037297 | Catalyst complexes and polymers therefrom The invention is directed towards a metal complex having the formula LMX1 X2. L is a bidentate nitrogen-containing ligand with more than two nitrogen atoms. M is copper, silver, or gold. X1 and X2 are independen... | 03/14/2000 |
| 5981782 | Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same The present invention provides a catalyst which exhibits a high catalytic activity and allows asymmetric reaction in a high asymmetric yield to obtain a reaction product having a high optical purity. The present invention also provides a process for the p... | 11/09/1999 |
| 5981424 | Catalysts for hydroxylation and ammination of aromatics using molecular oxygen as the terminal oxidant without coreductant Catalyst compositions are disclosed which are useful for the hydroxylation and the ammination of aromatic hydrocarbons using molecular oxygen as terminal oxidant. The catalysts comprise a support selected from the group consisting of metal oxides, molecul... | 11/09/1999 |
