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| Number | Title | Issue Date |
| 7803968 | Method for making carboxylic acids The present invention relates to a process for producing carboxylic acids. It relates more particularly to a process for producing carboxylic acids by oxidation of a hydrocarbon with oxygen or a gas containing oxygen, and even more particularly to the oxidation of c... | 09/28/2010 |
| 7705179 | Method for oxidising hydrocarbons, alcohols and/or ketones The present invention relates to the oxidation with oxygen, or a gas containing it, of hydrocarbons to the corresponding carboxylic acids, alcohols and/or ketones or of alcohols and/or ketones to the corresponding carboxylic acids. More specifically, the inve... | 04/27/2010 |
| 7361622 | Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alk... | 04/22/2008 |
| 7253312 | Process for producing carboxylic acids The present invention relates to a process for producing carboxylic acids. It relates more particularly to a process for producing carboxylic acids by oxidation of a hydrocarbon with oxygen or a gas containing oxygen, and even more particularly to the oxidation of c... | 08/07/2007 |
| 7081549 | Process for the production of acetic acid A process for the production of acetic acid, which process comprises contacting ethane and/or ethylene with a molecular oxygen-containing gas in a fluid bed reactor in the presence of a microspheroidal fluidised particulate solid oxidation catalyst, wherein at least... | 07/25/2006 |
| 7045667 | Process for producing cycloalkanol and/or cycloalkanone A process for producing a cycloalkanol and/or a cycloalkanone is provided, the process comprising the step of oxidizing cycloalkane with molecular oxygen in the presence of a mixture of metal oxides and/or a composite metal oxide, each containing cerium and zirconiu... | 05/16/2006 |
| 7041848 | Method for oxidizing hydrocarbons into acids The present invention relates to a process for oxidizing hydrocarbons, in particular branched or unbranched saturated aliphatic hydrocarbons, cycloaliphatic or alkylaromatic hydrocarbons to acidic or polyacidic compounds. The invention relates more particular... | 05/09/2006 |
| 7015355 | Method for the selective production of acetic acid by catalytic oxidation of ethane and/or ethylene A method for the selective production of acetic acid from a gas-phase feed of ethane, ethylene, or mixtures thereof and oxygen at elevated temperatures. The gas-phase feed is brought into contact with a catalyst, containing the elements Mo, Pd, X and Y in the gram a... | 03/21/2006 |
| 7015356 | Process for producing dicarboxylic acids A carboxylic acid is produced by oxidative cleavage of a cycloalkane with oxygen and performs a reaction in the presence of a catalyst including an imide compound and a metallic compound, the imide compound having a cyclic imide skeleton represented by the following... | 03/21/2006 |
| 7012155 | Process for the production of carboxylic acids Aliphatic carboxylic acids of formulae (Ib) R1—COOH(Ia) and R2—COOH wherein R1 is tertiary C4-20-alkyl and R2 together are —(CH2)n— with n=3 to 10, are produced by oxidizing an alip... | 03/14/2006 |
| 6958414 | Preparation of at least one organic compound by heterogeneously catalyzed partial gas-phase oxidation Organic compounds are prepared by heterogeneously catalyzed partial gas-phase oxidation of precursor compounds by a process in which a portion of the reaction gas starting mixture is brought from a low initial pressure to a higher final pressure by means of a radial... | 10/25/2005 |
| 6933407 | Method for producing methacrylic acid from isobutane A process prepares methacrylic acid from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and charging an oxidation zone with the isobutenic product gas mixture after the components other than isobutane and isobutene have bee... | 08/23/2005 |
| 6927311 | Method for oxidizing cycloalkane compound A method for producing an oxygenated compound from a cycloalkane compound which method is characterized in that a cycloalkane compound is contacted with oxygen in the presence of a cobalt compound and a ruthenium compound. ... | 08/09/2005 |
| 6927307 | Method for reactivating catalyst for methacrylic acid preparation This invention provides a method of reactivating a catalyst for methacrylic acid production, which catalyst is used in production of methacrylic acid through vapor-phase oxidation of methacrolein or vapor-phase oxidative dehydrogenation of isobutyric acid, contains ... | 08/09/2005 |
| 6858754 | Method for the production of acrylic acid by heterogeneously catalyzed partial propane oxidation Acrylic acid is prepared by heterogeneously catalyzed partial oxidation of propane by a process in which the steam content of the reaction gas starting mixture is reduced in the course of the process. ... | 02/22/2005 |
| 6833473 | Kits for quantifying oxidation parameters of low density lipoproteins and uses thereof Kits are provided for use in the screening of the risk for, the diagnosis, management and research of atherosclerosis and coronary heart disease comprising means for isolating LDL from a serum or plasma sample for the preparation of a LDL fraction, and means for sep... | 12/21/2004 |
| 6787669 | Method for separating and purifying adipic acid The present invention relates to the treatment of the reaction mixtures resulting from an oxidation reaction of cyclohexane to adipic acid and more particlarly to the separation of the various constituents of the said mixtures and to the purification of the adipic a... | 09/07/2004 |
| 6762319 | Hydrocarbon, alcohol and/or ketone oxidation method The present invention relates to the oxidation, by means of oxygen or a gas containing it, of hydrocarbons to the corresponding carboxylic acids, alcohols and/or ketones or of alcohols and/or ketones to the corresponding carboxylic acids. It consists more precisely ... | 07/13/2004 |
| 6563001 | Method for separating and purifying carboxylic acid derived from the direct oxidation of a hydrocarbon The present invention relates to an improved process for processing the reaction mixture from the direct oxidation of hydrocarbon into carboxylic acid, using molecular oxygen or a gas containing it, in the liquid phase, in a solvent and in the presence of... | 05/13/2003 |
| 6521788 | Process for the preparation of 1-aminomethyl-1-cyclohexaneacetic acid A process for the preparation of gabapentin of formula (I) ##STR1## which comprises: a) reduction of (1-nitromethyl-cyclohexyl)acetonitrile of formula (II) ##STR2## to give 3-imino-2-aza-spiro[4.5]decan-2-ol of formula (III) ##STR3## b) transformation of... | 02/18/2003 |
| 6521789 | Process for the preparation of adipic acid The present invention relates to an improved process for the preparation of adipic acid. More particularly, the present invention relates to an environmental-friendly, clean process for the preparation of adipic acid through oxidation of cyclohexanol, cyc... | 02/18/2003 |
| 6515172 | Process for the preparation of perfluorocarboxylic acids Process for the preparation of perfluorocarboxylic acids of the formula RF --COOH, salts thereof and esters thereof from perfluoroalkyl iodides of the formula RF '--I, in which RF and RF ' are cyclic, branched o... | 02/04/2003 |
| 6433221 | Methods of separating catalyst in solution from a reaction mixture produced by oxidation of cyclohexane to adipic acid This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by separating the catalyst from the reaction mixture, outside the reaction zone. Substantially all the unreacted cycl... | 08/13/2002 |
| 6433220 | Methods of extracting catalyst from a reaction mixture in the oxidation of cyclohexane to adipic acid This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by extracting the catalyst from the reaction mixture, outside the reaction zone. Substantially all the unreacted cycl... | 08/13/2002 |
| 6392093 | Process for the oxidation of cyclohexane to adipic acid The present invention relates to an improved process for the oxidation of cyclohexane to adipic acid using air as an oxidant and a solid organotransition metal complex as a catalyst. The process comprises comprises reacting cyclohexane with air in the pre... | 05/21/2002 |
| 6359173 | Methods and devices for oxidizing a hydrocarbon to form an acid Methods and devices for controlling the reaction of a hydrocarbon to an acid by making phase-related adjustments are disclosed. In order to improve reaction rate and reactivity of the oxidation, a single phase at the operating temperature is attained and ... | 03/19/2002 |
| 6307100 | Catalytic oxidation of hydrocarbons Disclosed are catalysts useful for catalyzing the synthesis of adipic acid from cyclohexane and oxygen. Also disclosed are methods of making the catalysts, methods of using the catalysts to catalyze the production of adipic acid from cyclohexane and oxyge... | 10/23/2001 |
| 6288274 | Methods and devices for controlling the reaction rate and/or reactivity of hydrocarbon to an intermediate oxidation product by adjusting the oxidant consumption rate Methods and devices for controlling the reaction rate and/or reactivity of a hydrocarbon to an intermediate oxidation product, such as an acid, within predetermined limits, are disclosed. Control of the reaction rate and/or reactivity within predetermined... | 09/11/2001 |
| 6288270 | Methods for controlling the reaction rate of a hydrocarbon to an acid by making phase-related adjustments Methods for controlling the reaction rate of a hydrocarbon to an acid by making phase-related adjustments are disclosed. In order to improve reaction rate of the oxidation, a single phase at the operating temperature is attained and maintained by adjustin... | 09/11/2001 |
| 6258981 | Catalytic oxidation of hydrocarbons Disclosed are catalysts useful for catalyzing the synthesis of adipic acid from cyclohexane and oxygen. Also disclosed are methods of making the catalysts, methods of using the catalysts to catalyze the production of adipic acid from cyclohexane and oxyge... | 07/10/2001 |
| 6235932 | Process for preparation of adipic acid The present invention relates to one-step oxidation process for preparation of cyclohexane to adipic acid, using molecular oxygen, in liquid phase, in the presence of catalyst, containing either cobalt or cobalt and iron. The catalyst is activated outside... | 05/22/2001 |
| 6232495 | Methods for treating cobalt catalyst in oxidation mixtures resulting from oxidation of hydrocarbons to dibasic acids This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a cobalt catalyst and a monobasic acid, such as acetic acid, by treating the catalyst from the reaction mixture, outsi... | 05/15/2001 |
| 6218573 | Methods of recovering catalyst in solution in the oxidation of cyclohexane to adipic acid This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by removing the catalyst from the reaction mixture, outside the reaction zone. Substantially all the unreacted cycloh... | 04/17/2001 |
| 6147256 | Co/Cr catalyzyed oxidation of cyclohexane Carboxylic acids, e.g., adipic acid, are more selectively prepared by oxidizing cyclohexane with oxygen or an oxygen-containing gas, in liquid phase, in a solvent reaction medium which comprises a polar protic or aprotic solvent, and also in the presence ... | 11/14/2000 |
| 6129875 | Process of separating catalyst from oxidation mixtures This invention relates to methods for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxidation zone, after the oxidation has t... | 10/10/2000 |
| 6114274 | Preparation of aliphatic carboxylic acids in the presence of heteropolyacid catalysts The aliphatic carboxylic acids, e.g., acetic acid, are selectively prepared, even on an industrial scale, by controlledly oxidizing the corresponding alkanes, e.g., ethane, with a source of oxygen, in the presence of a catalytically effective amount of an... | 09/05/2000 |
| 6063958 | Method of recovering adipic acid and 6-hydroxycaproic acid from waste solution of alkali metal salts of organic acids coming from the process of cyclohexane oxidation A method of recovering adipic acid and 6-hydroxycaproic acid from the waste solution of alkali metal salts of organic acids coming from the process of cyclohexane oxidation, which comprises: (i) basifying the reaction mixture coming from cyclohexane oxidation ... | 05/16/2000 |
| 6039902 | Methods of recycling catalyst in oxidations of hydrocarbons This invention relates to methods of recycling catalyst in oxidations of hydrocarbons, such as cyclohexane for example, to respective intermediate oxidation products, such as adipic acid for example, by a direct process. The catalyst remains in solution d... | 03/21/2000 |
| 6037491 | Methods and devices for controlling hydrocarbon oxidations to respective acids by adjusting the solvent to hydrocarbon ratio This invention relates to methods and devices of preparing acids, such as adipic acid for example, by oxidizing a hydrocarbon, such as cyclohexane for example, with a gas containing an oxidant, preferably oxygen. A respective hydrocarbon is reacted, prefe... | 03/14/2000 |
| 6028110 | Succinyl hydroxamic acid, N-formyl-N-hydroxy amino carboxylic acid and succinic acid amide derivatives as metalloprotease inhibitors A pharmaceutical or veterinary composition comprising a compound of formula I ##STR1## wherein X is a --CO2 H group and R1, R2, R3, R4, R5 are as defined in the specification, or a sal... | 02/22/2000 |
