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| Number | Title | Issue Date |
| 8110693 | Method and device for dissolving solids in liquids The invention relates to a method and device for dissolving solid bodies with a liquid, in particular for bringing solid bodies of different shapes and sizes, but mainly very course bodies, in contact with liquids, in order to dissolve them by a chemical reaction or... | 02/07/2012 |
| 7968740 | Process for preparing organically modified layered double hydroxide A process is disclosed for preparing an organically modified layered double hydroxide having a distance between the individual layers of the layered double hydroxide of about 1.5 nm and comprising an organic anion as charge-balancing anion, the process comprising th... | 06/28/2011 |
| 7223878 | Reduction of concentration of inorganic by-products and organometallic by-products in the preparation of metallocenes and economical recovery of the starting materials used A process for separating inorganic and organometallic by-products from a mixture comprising at least one organometallic transition metal compound as product and at least one organometallic by-product and at least one inorganic by-product as by-products comprises the... | 05/29/2007 |
| 7193098 | Process for producing semiconductor nanocrystal cores, core-shell, core-buffer-shell, and multiple layer systems in a non-coordinating solvent utilizing in situ surfactant generation A process for producing semiconductor nanocrystal cores, core-shell, core-buffer-shell, and multiple layer systems is disclosed. The process involves a non-coordinating solvent and in situ surfactant generation. ... | 03/20/2007 |
| 7179931 | High-purity trimethylaluminum and purification method of crude trimethylaluminum High-purity trimethylaluminum has the following impurity contents: organosilicon components≦0.5 ppm, chlorine components≦20 ppm, hydrocarbon components≦1,000 ppm, Ca≦0.05 ppm, Fe≦0.05 ppm, Mg≦0.05 ppm, Na≦0.05 ppm, Si (Si components other than the orga... | 02/20/2007 |
| 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 |
| 7148356 | Process for the catalytic synthesis of biaryls and polymers from aryl compounds A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or heteroaromatic compound is borylated in a reaction comprising a borane or diborane... | 12/12/2006 |
| 7122691 | Process for producing compound, catalyst component for addition polymerization, process for producing catalyst for addition polymerization, and process for producing addition polymer There are provided (1) a process for producing a compound, which comprises the step of contacting a compound (A) defined by the formula, M1L13, a compound (B) defined by the formula, R1t-1TH, and a compound (C) ... | 10/17/2006 |
| 7034173 | Chemical products suited for use as co-catalysts, method for the preparation thereof and their use in catalyst systems for producing polyolefins The invention relates to chemical products which are suited for use as co-catalysts and which can be obtained by reacting a compound of formula (I), M1R1R2(R3)m with a compound of formula (II), (R4X) | 04/25/2006 |
| 6953863 | Alcohol and glycol modified aluminum tri-alkoxide complexes Disclosed is an aluminum tri-alkoxide compound represented by Formula I: Al(X)a(Y)b (I) wherein “X” is an alkoxide moiety of one or more normal or iso-monohydroxy alcohols having from about 6 to 14 carbon atoms, and... | 10/11/2005 |
| 6867302 | Process for the catalytic synthesis of biaryls and polymers from aryl compounds A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or heteroaromatic compound is borylated in a reaction comprising a borane or diborane... | 03/15/2005 |
| 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 |
| 6809211 | Catalysts for polymerization of alkylene oxides The present invention provides new coordinative catalysts for the polymerization of alkylene oxides. ... | 10/26/2004 |
| 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 |
| 6762004 | Charge control agent and toner for developing electrostatic images Charge control agent and toner for developing electrostatic images containing said charge control agent. The active ingredient of the charge control agent is a metal compound obtainable by reacting one or two or more molecules of a compound having a phenolic hydroxy... | 07/13/2004 |
| 6713642 | Method for producing alkali metal monohydridoborates and monohydridoaluminates The invention relates to a method for producing compounds of general formula (A) by reacting an alkali metal hydride with a compound (B) during which the reaction is carried out in the presence of a catalyst that contains boron, whereby: M represents Li, Na, K, Rb o... | 03/30/2004 |
| 6664380 | Perfluorosulfonylmethide compounds; use thereof for carbon-carbon bond formation Free perfluorosulfonylmethide compounds and metal salts thereof show strong catalytic activity in carbon-carbon bond formation reactions, in amounts as low as 0.1 mole %. Fluorous media may be used, especially biphasic fluorous media enabling ready recycl... | 12/16/2003 |
| 6624321 | Process for the preparation of polyether polyols The present invention relates to a process for the preparation of polyether polyols by the reaction of alkylene oxides and compounds containing active hydrogens, in the presence of specific Lewis acid metal compounds as catalysts, novel bis(perfluoroalkyl... | 09/23/2003 |
| 6562991 | Gelatinous compositions formed from hydroxyaluminoxane, solid compositions formed therefrom, and the use of such compositions as catalyst components Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter formed from such gelatinous compositions, are described. The... | 05/13/2003 |
| 6524985 | Catalyst components for polymerization of olefins and use thereof Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: ##STR1## wherein R1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having... | 02/25/2003 |
| 6492292 | Gelatinous compositions formed from hydroxyaluminoxane, solid compositions formed therefrom, and the use of such compositions as catalyst components Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter formed from such gelatinous compositions, are described. The... | 12/10/2002 |
| 6413900 | Metallocene stabilized alumoxane Stabilized alumoxane solutions are provided as well as a method for producing such solutions. The method generally involves the use of metallocene catalyst component(s) that when mixed with alumoxane solutions reduce the tendency for such solutions to for... | 07/02/2002 |
| 6410766 | Emitting materials used for organic EL based on tridentate ligands A series of emitting materials used for organic EL based on tridentate ligands are characterized as Formula 1, Formula 2 and Formula 3, where: the group O-I-N is a bidentate ligand such as 8-hydroxyquinoline and 2-(o-hydroxyphenyl)-benzoxazole, II, III ar... | 06/25/2002 |
| 6372929 | Esterification catalysts An organometallic compound suitable for use as a catalyst for the preparation of an ester comprises the reaction product of an orthoester or condensed orthoester of titanium, zirconium or aluminum, an alcohol containing at least two hydroxyl groups, an or... | 04/16/2002 |
| 6355821 | Preparation of metal alkoxides Methods of forming metal alkoxides and methods of forming precursor solutions of metal alkoxides suitable for the coating of glass in the manufacture of electrochromic devices are disclosed. The method of forming metal alkoxides involves dissolving the me... | 03/12/2002 |
| 6303674 | Aluminium salts of alkylhydroxymethylphosphinic acids Aluminum salts of alkylhydroxymethylphosphinic acids are prepared by reacting phosphonous acids with aluminum hydroxide or paraformaldehyde or trioxane or mixtures thereof in water at 110 to 250° C. under pressure. The resulting aluminumphosphinates are ... | 10/16/2001 |
| 6214760 | Catalyst activator composition A composition comprising a mixture of aluminum containing Lewis acids said mixture corresponding to the formula: (Arf3 Al)(AlQ13)y (--AlQ2 --O--)z where; Arf is a fluorinated ar... | 04/10/2001 |
| 6207845 | Aluminum compounds and use thereof An aluminum compounds represented by the following general formula (1): Al(R1 --SO3)1 (R2)m (R3)n (1) wherein R1 is a hydrocarbon group which may be substituted, R2 is ... | 03/27/2001 |
| 6197985 | Solid aluminoxane for catalyst carrier, process for preparing the same, and uses thereof A low-bulk density solid aluminoxane has an average particle diameter of 210 to 10,000 μm and a bulk density of from 0.01 to 1.0 g/cc. Representative solid aluminoxanes may be prepared from polymethylaluminoxane or mixed alkyl group aluminoxanes. The sol... | 03/06/2001 |
| 6180808 | Metallocene stabilized alumoxane Stabilized alumoxane solutions are provided as well as a method for producing such solutions. The method generally involves the use of metallocene catalyst component(s) that when mixed with alumoxane solutions reduce the tendency for such solutions to for... | 01/30/2001 |
| 6156916 | Volatile organometallic compound containing a divalent metal and a group 13 metal, process for preparing same, and process for preparing a heterometallic oxide film using same A novel organometallic compound of formula M[(μ-OR')2 M'R2 ]2 can be vaporized at a low temperature and advantageously employed in the CVD of a heterometallic oxide film of the MM'2 O4 type, wherein ... | 12/05/2000 |
| 6153550 | Olefin polymerization catalyst based on metallocene complexes and perfluorinated oligoaryl derivatives of aluminates The invention relates to a catalyst composition for olefin polymerization comprising metallocene complexes and novel cocatalysts belonging to the group of perfluorinated oligoarylaluminates, oligoarylthioaluminates and oligoarylaminoaluminates. These coca... | 11/28/2000 |
| 6100415 | Purified alkoxide and process for purifying crude alkoxide A purified alkoxide from which volatile impurities causing polymerization and degradation of the alkoxide are removed to extremely low concentrations. The purified alkoxide can be obtained by distilling a crude alkoxide and stripping the distilled liquid ... | 08/08/2000 |
| 6090950 | Chiral hydride complexes Novel chiral boron and aluminum hydride complexes, compositions comprising the chiral hydride complexes, and methods for their synthesis and use are described. The novel chiral hydride complexes are of the formulas: MBH4-n-a (R*)n (R') | 07/18/2000 |
| 6063951 | Volatile magnesium alkylaluminum alkoxide and deposition of magnesium aluminate film using same Novel magnesium dialkylaluminum alkoxide derivative represented by Mg[(μ--OR')2 AlR2 ]2 wherein R and R' are each a C1-5 alkyl group and R is not the same as R', preferably magnesium dimethylaluminum isopropoxi... | 05/16/2000 |
| 6034024 | Heat treated alumoxanes A process is described which comprises heating a methylalumoxane solution in an aromatic hydrocarbon solvent at a temperature of at least 35° C. for at least 0.5 hour in an inert, dry atmosphere such that the resulting heat-treated composition provides, ... | 03/07/2000 |
| 5998644 | Volatile organometallic compound containing a divalent metal and a group 13 metal, process for preparing same, and process for preparing a heterometallic oxide film using same A novel organometallic compound of formula M[(μ-OR')2 M'R2 ]2 can be vaporized at a low temperature and advantageously employed in the CVD of a heterometallic oxide film of the MM'2 O4 type, wherein ... | 12/07/1999 |
| 5925777 | Schiff base quinone complexes and optical recording materials comprising the same Novel Schiff base quinone complexes are provided. They are useful as anti-fading agents and filter dyes. The anti-fading agents are applicable to heat developable photosensitive materials, silver halide photosensitive materials, and optical recording mate... | 07/20/1999 |
| 5917073 | Organic aluminoxy compound and catalyst for producing polymer An organic aluminoxy compound which shows 27 Al nuclear magnetic resonance spectrum (27 Al-NMR spectrum) having an A1 /A2 ratio of at most 0.1, wherein A1 is area of a region encompassed by a segment ... | 06/29/1999 |
| 5902891 | Aluminoxane process and product An aluminoxane product is prepared by reacting water which contains a stabilizing agent, such as a lithium halide, with a hydrocarbyl aluminum compound, such as tri-methylaluminum, in an organic solvent. The product has increased resistance to gel-formati... | 05/11/1999 |
