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| Number | Title | Issue Date |
| 8178734 | Processes for producing ethylene glycol from oxalate(s) Provided are processes for producing ethylene glycol from oxalate(s), wherein two or more reaction zones in series are used, and oxalate feedstock is fed stagewise, or hydrogen feedstock and optionally a solvent are fed stagewise. The present processes achieve highe... | 05/15/2012 |
| 7777085 | Method for conversion of oil-containing algae to 1,3-propanediol The present invention relates to a process for oxidizing renewable polyunsaturated fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) to a malonic acid intermediate which is subsequently reduced to 1,3 propanediol (PDO). ... | 08/17/2010 |
| 7642386 | Method for producing alcohol The invention relates to a process for producing an alcohol from fats and oils, including: step 1 of reacting starting fats and oils with water to produce a reaction product containing a glycerin unit, and step 2 o... | 01/05/2010 |
| 7615671 | Hydrogenation process for the preparation of 1,2-diols Disclosed is a process for the preparation of 1,2-glycols by hydrogenation of 1,2-dioxygenated organic compounds in the presence of a catalyst composition comprising a ruthenium compound, a trivalent phosphorus compound selected from 1,1,1-tris(diarylphosphinomethyl... | 11/10/2009 |
| 7579508 | Process for producing alcohol The invention provides a process for producing an alcohol, including the step of hydrogenating a glyceride in the presence of a catalyst, adding water, or a process for producing an alcohol, including the step of hydrogenating a glyceride in the presence of a cataly... | 08/25/2009 |
| 7449609 | Method for production of 1,6-hexanediol with a purity in excess of 99.5% The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by a) freeing resulting the es... | 11/11/2008 |
| 7335799 | Hydroxyl compounds and compositions for cholesterol management and related uses The present invention relates to novel hydroxyl compounds, compositions comprising hydroxyl compounds, and methods useful for treating and preventing a variety of diseases and conditions such as, but not limited to aging, Alzheimer's Disease, cancer, cardiovascular ... | 02/26/2008 |
| 7329330 | Method and device for the distillative processing of 1,6-hexanediol, 1,5-pentanediol and caprolactone A process for working up by distillation the crude products obtained in the process according to DE-A 196 07 954 and containing 1,6-hexanediol (HDO), 1,5-pentanediol (PDO) or caprolactone (CLO) in order to obtain the corresponding pure products, the working-up by di... | 02/12/2008 |
| 7307194 | Method for producing 1, 6 hexane diol The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product in the oxidation of cyclohexane to cyclo... | 12/11/2007 |
| 7271299 | Two-stage method for producing butanediol with intermediated separation of succinic anhydride Optionally alkyl-substituted 1,4-butanediol is prepared from C4-dicarboxylic acids and/or of derivatives thereof by: a) a gas stream of the C4-dicarboxylic acid or the derivative thereof in a first reactor in ... | 09/18/2007 |
| 7265184 | Polymer hydrogenation process A process for hydrogenating unsaturations in polymers, the process comprising contacting at least one polymer having unsaturations with a catalyst comprising at least one Group Ia, Ib, IIb, VIb, VIIb or VIII metal on a support of an alkaline earth metal silicate hav... | 09/04/2007 |
| RE39794 | Process for the simultaneous production of maleic anhydride and its hydrogenated derivatives A process is described for the co-production of maleic anhydride and at least one C4 compound selected from butane-1,4-diol, γ-butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a hydrocarbon feedstock select... | 08/21/2007 |
| 7259129 | Silver-containing catalysts, the manufacture of such silver-containing catalysts, and the use thereof A high activity and high selectivity silver catalyst comprising silver and, optionally, one or more promoters supported on a suitable support material having the form of a shaped agglomerate. The structure of the shaped agglomerate is that of a hollow cylinder havin... | 08/21/2007 |
| 7247600 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 07/24/2007 |
| 7232786 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7232918 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7230144 | Methods of making intermediates from polyhydroxyalkanoates Methods of forming intermediates from PHAs are disclosed. ... | 06/12/2007 |
| 7179388 | Method for removing formic acid from aqueous solutions Formic acid is at least partly removed from an aqueous solution comprising formic acid, cyclohexanone and cyclohexanol by decomposition over certain decomposition catalysts. The method is preferably used for processing reaction products from the oxidation of ... | 02/20/2007 |
| 7172989 | Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, pl... | 02/06/2007 |
| 7169958 | Method for the production of 1,4- butane-diol by combined gas-phase and liquid-phase hydrogenation The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C4-dicarboxylic acids and/or of derivatives thereof having the following steps: a) i... | 01/30/2007 |
| 7154011 | Method for the production of 1,4- butanediol The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C4-dicarboxylic acids and/or of derivatives thereof having the following steps: a) i... | 12/26/2006 |
| 7119237 | Process and catalyst for preparing alcohols Alcohols prepared by reacting carboxylic acids and/or carboxylic esters with hydrogen in the presence of a special catalyst. ... | 10/10/2006 |
| 7084312 | Catalyst and method for hydrogenating carbonyl compounds A process for the hydrogenation of an organic compound containing at least one carbonyl group comprises bringing the organic compound in the presence of hydrogen into contact with a shaped body which can be produced by a process in which ... | 08/01/2006 |
| 7084313 | Three stage processes for the separation of supercritical or near-critical mixtures Processes for separating supercritical or near-critical mixtures containing hydrogen, a solvent gas, methanol and a fatty alcohol under an initial pressure of from 100 to 300 bar are described, wherein the processes comprise: (a) reducing the pressure of such a mixt... | 08/01/2006 |
| 7064239 | Preparation of 1,6-hexanediol The present invention provides a process for preparing 1,6-hexanediol having a purity of ≧99.5% by weight by catalytically dimerizing acrylic esters and catalytically hydrogenating the hexenedioic diesters obtained in this way to 1,6-hexanediol by a) ... | 06/20/2006 |
| 7038094 | Hydrogenolysis of 5-carbon sugars, sugar alcohols, and methods of making propylene glycol Methods and compositions for reactions of hydrogen over a Re-containing catalyst with compositions containing a 5-carbon sugar, sugar alcohol, or lactic acid are described. It has been surprisingly discovered that reaction with hydrogen over a Re-containing multimet... | 05/02/2006 |
| 7037877 | Process for the preparation of copper chromite catalyst The present invention provides a process for the preparation of an improved copper chromite catalyst for the hydrogenation of diethyl maleate to tetrahydrofuran with very high selectivity. This invention particularly relates to a process for the preparation of an im... | 05/02/2006 |
| 7030034 | Methods of etching silicon nitride substantially selectively relative to an oxide of aluminum A method of etching silicon nitride substantially selectively relative to an oxide of aluminum includes providing a substrate comprising silicon nitride and an oxide of aluminum. The silicon nitride and the oxide is exposed to an etching solution comprising HF and a... | 04/18/2006 |
| 7030053 | Catalyst composition comprising ruthenium and a treated silica support component and processes therefor and therewith for preparing high molecular weight hydrocarbons such as polymethylene A catalyst composition and a process of using a catalyst composition for preparing high molecular weight hydrocarbons, such as polymethylene, from a fluid containing hydrogen and carbon monoxide are disclosed. The catalyst composition contains ruthenium and a treate... | 04/18/2006 |
| 7005495 | Polycarbonate diol having high proportion of primary terminal OH Disclosed is a polycarbonate diol having diol monomer units and carbonate monomer units, wherein the amount of at least one diol monomer unit selected from the group consisting of a 1,5-pentanediol unit and a 1,6-hexanediol unit is from 50 to 100% by mole, based on ... | 02/28/2006 |
| 6982357 | PROCESS FOR THE PREPARATION OF PROPANE-1,3-DIOL BY VAPOR PHASE HYDROGENATION OF 3-HYDROXYPROPANAL, BETA-PROPIOLACTONE, OLIGOMERS OF BETA-PROPIOLACTONE, ESTERS OF 3-HYDROXYPROPANOIC ACID OR MIXTURES THEREOF A process is described for the production of propane-1,3-diol. The process comprises subjecting a vaporous feed mixture comprising a hydrogen-containing gas and a feedstock selected from 3-hydroxypropanal, β-propiolactone, oligomers of β-propiolactone, esters of 3... | 01/03/2006 |
| 6949684 | Process for preparing 1,2,4-butanetriol An object of the present invention is to provide a process wherein 1,2,4-butanetriol can be obtained safely, easily and inexpensively without causing problems concerning wastewater. A malic diester, 3-hydroxy-γ-butyrolactone or 3,4-dihydroxybutanoate represented by... | 09/27/2005 |
| 6919489 | Process for a cyclohexanedimethanol using raney metal catalysts Disclosed is a process for a cyclohexanedimethanol by hydrogenation of a cyclohexane-dicarboxylate ester in the presence of a Raney metal catalyst doped with rhenium. The process is useful for the reparation of 1,4-cyclohexanedimethanol from dialkyl esters of 1,4-cy... | 07/19/2005 |
| 6911565 | Process for the production of xylitol The present invention relates to a process for the production of xylitol. The process utilises ribulose for the preparation of xylitol and involves several different conversion reactions, such as reduction, epimerisation and/or isomerisation. The present invention a... | 06/28/2005 |
| 6906228 | Method for catalytic hydrogenation on rhenium-containing active carbon carrier catalysts In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, pl... | 06/14/2005 |
| 6900360 | High-purity 1,3-butylen glycol, process for producing 1,3-butylene glycol, and process for producing by-product butanol and butyl acetate A method is provided for the preparation of high-purity 1,3-butylene glycol from acetaldehyde. In the method, acetaldehyde is condensed in the presence of base to form a mixture of acetaldols, and the acetaldols are then converted to 1,3-butylene glycol by hydrogena... | 05/31/2005 |
| 6894199 | Process for the production of xylitol The present invention relates to the production of xylitol. In particular, processes utilising L-xylose as an intermediate for xylitol production are described. The present invention also relates to process for the preparation or L-xylose, as an intermediate, by-pro... | 05/17/2005 |
| 6878852 | Process for hydrogenation of carbonyl and iminocarbonyl compounds using ruthenium catalysts comprising tetradentate diimino-diphosphine ligands A process for the hydrogenation, using molecular hydrogen (H2) of a catalytic system, wherein the catalytic system includes a base and a complex of formula (II): Ru(P2N2)Y2 (II) wherein Y represent... | 04/12/2005 |
| 6765118 | Method for the production of alcohols on rhenium-containing activated charcoal supported catalysts In a process for the preparation of alcohols by catalytic hydrogenation of carbonyl compounds, the catalyst used is 0.01 to 50% by weight of rhenium and 0 to 20% by weight, in each case based on the total weight of the catalyst, of at least one further metal chosen ... | 07/20/2004 |
| 6727395 | Method for producing hexanediol A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water ex... | 04/27/2004 |
