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| Number | Title | Issue Date |
| 7759509 | Highly reactive zinc form, method for the production thereof, and use of the same The invention relates to a highly reactive zinc form, to a method for the production thereof, and to the use of said highly reactive zinc form in synthetic chemistry. ... | 07/20/2010 |
| 7321048 | Organometallic compound purification A method of purifying an organometallic compound by heating the organometallic compound in the presence of a trialkyl aluminum compound and a catalyst. ... | 01/22/2008 |
| 7211235 | Method for producing hydrotalcites A method is described for the manufacture of hydrotalcites by using at least one compound of a bivalent metal (Component A) and at least one compound of a trivalent metal (Component B), wherein at least one of these components is not used in the form of a solution, ... | 05/01/2007 |
| 7202317 | Polymerization of i-butene in hydrocarbon media using bis(borane) co-initiators A method is provided for cationically polymerizing olefin monomer by using a novel coinitiator in the presence of water. More specifically, a method is provided for cationically polymerizing olefin monomer by using a novel coinitiator in an aqueous suspension or aqu... | 04/10/2007 |
| 7112638 | Hetero cyclic metallocene compounds and use thereof in catalyst system for producing olefin polymers A metallocene compound of general formula (I): LGZMXp, wherein L is a divalent group, Z is a moiety of formula (II), wherein R3 and R4 are selected from hydrogen and hydrocarbon groups; A and B are... | 09/26/2006 |
| 7112691 | Purification method for organometallic compounds and organometallic compounds obtained therefrom A method of purifying an organometallic compound comprising distilling the organometallic compound for purification while blowing an inert gas through a vapor of the organopolysiloxane, thereby removing from the organometallic compound an impurity havin... | 09/26/2006 |
| 6906214 | Preparation of aromatic organozinc compounds and composition therefore The invention relates to a technique for preparing aromatic organozinc compounds and to a composition therefore. This composition constitutes a reactant that can be used to carry out the synthesis of organozinc compounds, and comprises a cobalt salt, a zinc salt, a ... | 06/14/2005 |
| 6841638 | Ionic compounds with delocalized anionic charge, and their use as ion conducting components or as catalysts The invention relates to an ionic compound corresponding to the formula [R1X1(Z1)—Q−—X2(Z2)—R2]m Mm+ in which Mm+ is a cation of valency m, each of ... | 01/11/2005 |
| 6790972 | Polymerisation catalysts The invention relates to new compounds having an element of group 12 and having a tridentate ligand, a process for their preparation and their use in particular as a polymerization catalyst. ... | 09/14/2004 |
| 6781007 | Process for preparing partial hydrolysates of organometallic compounds or transition metal catalysts immobilized on inert support materials The invention relates to a process for preparing partial hydrolysates of organometallic compounds and to a process for preparing partial hydrolysates of organometallic compounds, in particular alkylaluminoxanes, or transition metal catalysts immobilized on inert sup... | 08/24/2004 |
| 6770588 | Reduction of carbonyl compounds by a silane in the presence of a zinc catalyst A reductive system including a silane, preferably PMHS, and an active zinc compound, which is monomeric and not a hydride, wherein a reduction of a carbonyl substrate to a corresponding alcohol is achievable. ... | 08/03/2004 |
| 6653515 | Synthesis of , ଲ, ଲ-trifluorostyrene via in-situ formation of trifluorovinyl metal halide ,ଲ,ଲ-Trifluorostyrene and derivatives thereof synthesized in two steps from 1,1,1,2-tetrafluoroethylene. In the first step, 1,1,1,2-tetrafluoroethylene is reacted with a base, a metal salt such as zinc chloride and an optionally amine t... | 11/25/2003 |
| 6521771 | Use of zinc treated with metal hydride in organometallic synthesis The present invention describes the use of zinc treated with metal hydride in organometallic synthesis.... | 02/18/2003 |
| 6517795 | Process for producing hydrotalcites and the metal oxides thereof A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolyzing the resultant alcoholate mixture with water. The correspondi... | 02/11/2003 |
| 6448314 | Use of monohydrate zinc acetylacetonate as halogenated polymer stabilizer and preparation method The subject of the present invention is the use of zinc ateylacetonate comprising at least 4.4% by weight of water as halogenated polymer stabilizer. Its subject is likewise a process for the preparation of zinc acetylacetonate monohydrate, in which a zin... | 09/10/2002 |
| 6420584 | Process for the preparation of ortho-substituted arylmetal compounds and their reaction with electrophilic reagents Ortho-substituted arylmetal compounds are prepared by deprotonation of aromatics which have a hydrogen atom in the ortho position relative to at least one halogen atom, one trifluoromethoxy group, one dialkylamino group, one nitrile group, one alkoxy grou... | 07/16/2002 |
| 6376629 | Single-site catalysts for olefin polymerization A single-site olefin polymerization catalyst and method of making it are disclosed. The catalyst comprises an activator and an organometallic complex. The complex comprises a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ... | 04/23/2002 |
| 6316652 | Drug mitochondrial targeting agents The invention relates to novel targeting drug agents that are targeted for entry into the mitochondria. More specifically, the agents are cisplatin derivatives called mitoplatins which are useful as anti-tumor agents. Mitoplatins are named for their targe... | 11/13/2001 |
| 6313331 | Carbene transition metal catalysts The present invention relates to novel complexes of (transition) metals containing ligands having phosphorus centers supporting a carbene structure or heteroalkane radical bonded to the (transition) metal.... | 11/06/2001 |
| 6258967 | Process for the preparation of an organozinc reagent A process for the preparation of an aromatic organozinc compound is provided. The process comprises reacting a zinc chloride, bromide or iodide and an organometallic compound of another metal comprising an aromatic moiety, producing a reaction product com... | 07/10/2001 |
| 6211380 | Process for the preparation of heteroaryl-zinc halides A process for the preparation of heteroaryl-zinc halides of the formula (II): Het--Zn--X, wherein Het is an optionally substituted 5 or 6 membered aromatic heterocyclic group with one or two heteroatoms selected among nitrogen, oxygen or sulphur; X is a c... | 04/03/2001 |
| 6184404 | Process for the selective alkylation of aldehydes by means of organozinc compounds There is described a process for the enantioselective alkylation of aldehydes by means of organozinc compounds, of which a ligand of the zinc is transferred to the aldehyde, and the other ligand acts as so-called dummy ligand. As novel substances there ar... | 02/06/2001 |
| 6180764 | Process for producing hydrotalcites by hydrolyzing metal alcoholates A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolysing the resultant alcoholate mixture with water. The correspondi... | 01/30/2001 |
| 6146608 | Stable hydride source compositions for manufacture of semiconductor devices and structures A metal hydride derivative wherein at least one hydrogen atom is replaced by deuterium (21 H) or tritium (31 H) isotope. The metal constituent of such metal hydride may be a Group III, IV or V metal or a transit... | 11/14/2000 |
| 6060568 | Carbene transition metal catalysts The present invention relates to novel complexes of (transition) metals containing ligands having phosphorus centers supporting a carbene structure or heteroalkane radical bonded to the (transition) metal.... | 05/09/2000 |
| 5932363 | Electroluminescent devices A luminescent composition containing a mixture of a fluorescent material and a metal chelate compound of the formula Ln --M+n (I) wherein M represents a metal; n is a number of from 1 to 3, and L is a ... | 08/03/1999 |
| 5783717 | Method for purifying organometal compound A method for purifying an organometal compound by removing oxygen atom-containing compounds included in the organometal compound as impurities is herein disclosed. The method comprises the steps of mixing an organometal compound represented by the followi... | 07/21/1998 |
| 5776424 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalen inorganic anions There is provided a method for making a monovalent inorganic anion-intercalated hydrotalcite-like material by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free, aqueous suspension to form a meixnerite ... | 07/07/1998 |
| 5730951 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with polyvalent inorganic anions There is provided a method for making a polyvalent inorganic anion-intercalated hydrotalcite-like material by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free, aqueous suspension to form a meixnerite ... | 03/24/1998 |
| 5728363 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds There is provided an improved method for making synthetic hydrotalcite by first reacting powdered magnesium oxide with a high surface area, transition alumina in a solution or suspension to form a meixnerite-like intermediate. This intermediate is then co... | 03/17/1998 |
| 5728364 | Two powder synthesis of hydrotalcite and hydrotalcite like compounds There is provided an improved method for making synthetic hydrotalcite by first reacting a divalent metal compound with a trivalent metal oxide powder in a carboxylic acid-free, aqueous solution or suspension to form an intermediate. This intermediate is ... | 03/17/1998 |
| 5728365 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with divalent inorganic anions There is provided a method for making a divalent inorganic anion-intercalated hydrotalcite-like material by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free aqueous suspension to form a meixnerite inte... | 03/17/1998 |
| 5728366 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalent organic anions There is provided a method for making monovalent organic anion-intercalated hydrotalcite-like materials by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free, aqueous suspension to form a meixnerite inte... | 03/17/1998 |
| 5693261 | Preparation of pentafluorophenyl compounds Pentafluorophenylmagnesium halides are prepared by a Grignard exchange reaction of hydrocarbylmagnesium halide with pentafluorochlorobenzene. The pentafluorophenylmagnesium halides are converted to pentafluorophenyl metal or metalloid derivatives by react... | 12/02/1997 |
| 5578286 | Two powder synthesis of hydrotalcite-like compounds with divalent or polyvalent organic anions There is provided a method for making a divalent or polyvalent organic anion-intercalated hydrotalcite-like materials by first reacting a magnesium-containing powder and a transition alumina powder in an aqueous suspension to form a meixnerite intermediat... | 11/26/1996 |
| 5380895 | Method for the synthesis of metal alkyls and metal aryls Method for forming metal alkyl compounds by the direct combination of metal halide, lithium metal, and alkyl or aryl halide and for purifying metal alkyl compounds by repeated sublimation/pumping cycles. The method can be used to produce metal alkyl compo... | 01/10/1995 |
| 5281733 | Process for producing MMT A process for the carbonylation of substituted metal coordination compounds in the presence of carbon monoxide at a pressure in excess of 400 psig to produce optionally substituted cyclopentadienyl metallic carbonyls, particularly methylcyclopentadienyl m... | 01/25/1994 |
| 5068113 | Chlorofibers with permanent antiseptic character and process for their production The fibrous polymeric material based on polyvinyl chloride contains at least one antiseptic mercury derivative distributed in its polymeric structure in the form of a substantially molecular and practically non-releasable dispersion. The preferred mercury... | 11/26/1991 |
| 5028725 | Thiolactone metal complexes This invention relates to novel compounds which are precursors for di- and triarylmethane dye precursor compounds possessing a thiolactone, dithiolactone or thioether ring-closing moiety.... | 07/02/1991 |
| 5023213 | Precursors in the preparation of transition metal nitrides and transition metal carbonitrides and their reaction intermediates A process for making ammonolytic precursors to nitride and carbonitride ceramics. Extreme reaction conditions are not required and the precursor is a powder-like substance that produces ceramics of improved purity and morphology upon pyrolysis.... | 06/11/1991 |
