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| Number | Title | Issue Date |
| 7390869 | Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species A process for removing metal species from a composition comprising contacting: a. an oligomer mixture stream comprising the monomers of a partially aromatic polyester polymer and at least one metal species, or b. a... | 06/24/2008 |
| 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 |
| 7138552 | Method for producing C-alcohol mixtures The present invention relates to a process for preparing a C13-alcohol mixture which is suitable, in particular, as precursor for the preparation of compounds having surfactant properties and of plasticizers. ... | 11/21/2006 |
| 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 |
| 7067615 | Hydrotreating polyester precursors A process comprising contacting a liquid polyester stream with hydrogen in the presence of a hydrogenation catalyst comprising a metal supported on the surface of silicon carbide at a metal dispersion of at least 0.5% or graphite at a metal dispersion of at least 10... | 06/27/2006 |
| 7060861 | Method for hydrating poly-or monomethylol alkanals In a process for the catalytic hydrogenation of a polymethylolalkanal or a monomethylolalkanal of the formula (I) where R may be identical or different and are each a substituted or unsubstituted aliphatic hydroc... | 06/13/2006 |
| 7026008 | Stable sugar-based hard candy having high index of whiteness A stable hard-boiled candy prepared with sucrose, hydrogenated starch hydrolysate (HSH) and optionally 42 DE corn syrup. It is a preferred embodiment of the invention that the candy be produced without the use of a vacuum. The candy exhibits good stability character... | 04/11/2006 |
| 7022824 | Method for the production of sorbit A process is described for preparing sorbitol by catalytic hydrogenation of a monosaccharide forming sorbitol on hydrogenation in the liquid phase, which comprises the catalyst being obtainable by: i) single or multiple treatment o... | 04/04/2006 |
| 6995107 | Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst made... | 02/07/2006 |
| 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 |
| 6953873 | Low-temperature hydrocarbon production from oxygenated hydrocarbons Disclosed is a method of producing hydrocarbons from oxygenated hydrocarbon reactants, such as glycerol, glucose, or sorbitol. The method can take place in the vapor phase or in the condensed liquid phase (preferably in the condensed liquid phase). The method includ... | 10/11/2005 |
| 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 |
| 6900361 | Process for lactose conversion to polyols A process for converting lactose into polyols that includes (a) hydrolyzing lactose to produce a hydrolyzate that includes at least one monosaccharide, (b) subsequently hydrogenating the hydrolyzate to produce an alditol-containing intermediate composition, and (c) ... | 05/31/2005 |
| 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 |
| 6894160 | Catalytic process for the modification of carbohydrates, alcohols, aldehydes or polyhydroxy compounds The invention relates to the industrial conversion of carbohydrates, alcohols, aldehydes or polyhydroxy compounds in aqueous phase. According to the invention a catalytic method is used for the conversion, using a metal catalyst consisting of polymer-stabilized nano... | 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 |
| 6841085 | Hydrogenolysis of 6-carbon sugars and other organic compounds Methods for hydrogenolysis are described which use a Re-containing multimetallic catalyst for hydrogenolysis of both C—O and C—C bonds. Methods and compositions for reactions of hydrogen over a Re-containing catalyst with compositions containing a 6-carbon sugar... | 01/11/2005 |
| 6811604 | Additives for mineral binders, based on a product of internal dehydration of a hydrogenated sugar, mineral binders with additives and method of preparing same The subject matter of the invention is a new additive for mineral binders comprising a composition containing at least one product of internal dehydration of a hydrogenated sugar which can especially be a dehydrated hexitol such as isosorbide, isomannide, sorbitan o... | 11/02/2004 |
| 6809224 | Method for the separation of formaldehyde from a reaction mixture containing polyols by the addition of solvents before and/or during the distillation Formaldehyde is removed by distillation from reaction solutions containing a methlolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic hydrogen atom α to the carbonyl function or from the reaction of a 2-... | 10/26/2004 |
| 6787677 | Hydrogenation of carbonyl compounds In a process for the catalytic hydrogenation of a carbonyl compound or a mixture of two or more carbonyl compounds in the presence of catalyst tablets which comprise an inorganic, TiO2-containing support and, as active component, copper or a mixture of co... | 09/07/2004 |
| 6670300 | Textured catalysts, methods of making textured catalysts, and methods of catalyzing reactions conducted in hydrothermal conditions A textured catalyst having a hydrothermally-stable support, a metal oxide and a catalyst component is described. Methods of conducting aqueous phase reactions that are catalyzed by a textured catalyst are also described. The invention also provides method... | 12/30/2003 |
| 6593502 | Process for the preparation of polyols The invention relates to a process for the preparation of polyols having 3 or 4 hydroxyl groups, from an aldehyde and formaldehyde in the presence of water, followed by hydrogenation of the aldolisation product in the presence of a hydrogenation catalyst ... | 07/15/2003 |
| 6586642 | Color number improvement in polyhydric alcohols by hydrogenation A process for greatly improving the color index of polyhydric alcohols, especially trimethylolpropane, by hydrogenation comprises using, in the hydrogenation, an alcohol which has already been purified by distillation. The catalysts used are those convent... | 07/01/2003 |
| 6570043 | Converting sugars to sugar alcohols by aqueous phase catalytic hydrogenation The present invention provides a method of converting sugars to their corresponding sugar alcohols by catalytic hydrogenation in the aqueous phase. It has been found that surprisingly superior results can be obtained by utilizing a relatively low temperat... | 05/27/2003 |
| 6486366 | Method for producing alcohols by hydrogenation of carbonyl compounds A method for preparation of alcohols by catalytic hydrogenation of carbonyl compounds with hydrogen or hydrogen-containing gases in the presence of a hydrogenation catalyst of Raney type, where the catalyst is used in the form of hollow bodies, Preferred ... | 11/26/2002 |
| 6482972 | Isomeric nonanols and decanols, their preparation, phthalic esters obtained therefrom and their use as plasticizers Mixtures of isomeric nonanols and decanols are obtained by joint aldol condensation of n-butanal and pentanals, and up to 1% by weight of 3-methylbutanal, hydrogenation of the aldol condensation product to the corresponding saturated alcohols, and separat... | 11/19/2002 |
| 6479713 | Hydrogenolysis of 5-carbon sugars, sugar alcohols, and other methods and compositions for reactions involving hydrogen 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-containi... | 11/12/2002 |
| 6414201 | Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst ... | 07/02/2002 |
| 6326519 | Diallylic sulfides and processes for preparing the same Diallylic sulfides represented by Formula I ##STR1## wherein: R1 and R2 are independently chosen from the group consisting of --CHO, --CH2 Cl, --CH2 Br, --CH2 I, --CH2 OH, CH2 OS... | 12/04/2001 |
| 6297409 | Continuous process for the preparation of a high-purity hydrogenated ose by catalytic hydrogenation The invention relates to a continuous process for the preparation of a high-purity hydrogenated ose by catalytic hydrogenation of the corresponding ose in falling film reactors, wherein the hydrogenation is carried out in a series of fixed beds of rutheni... | 10/02/2001 |
| 6291725 | Catalysts and process for hydrogenolysis of sugar alcohols to polyols The present invention provides a process for preparation of low molecular weight polyols from high molecular weight polyols in a hydrogenolysis reaction under elevated temperature and hydrogen pressure. The process comprises providing in a reaction mixtur... | 09/18/2001 |
| 6274727 | Method for producing shaped and unshaped polyol masses The invention relates to a composition, comprising one or more polyols, which has prolonged deformability and can be processed to give tablets, compacts or boiled sweets having improved properties.... | 08/14/2001 |
| 6262318 | Method of producing polyols from arabinoxylan-containing material The invention relates to a method of producing xylitol and erythritol from arabinoxylan-containing material. According to the invention, the arabinoxylan-containing material is hydrolyzed and xylose and arabinose are separated from the obtained hydrolysat... | 07/17/2001 |
| 6255541 | Process for the preparation of polyvalent alcohols The invention relates to a process for the preparation of polyvalent alcohols by hydrogenation of an aldehyde. According to the invention said aldehyde is obtained by aldolisation reaction of an aldehyde containing an hydrogen atom and having the ... | 07/03/2001 |
| 6235797 | Ruthenium on rutile catalyst, catalytic system, and method for aqueous phase hydrogenations An essentially nickel- and rhenium-free catalyst is described comprising ruthenium on a titania support where the titania is greater than 75% rutile. A catalytic system containing a nickel-free catalyst comprising ruthenium on a titania support where the ... | 05/22/2001 |
| 6232512 | Method for reducing the content of acetals or ketals in alcohol-containing reaction mixtures Reduction in the content of acetals or ketone acetals in a reaction mixture containing at least 10 moles alcohol per mole acetal or ketone acetal can be achieved hydrogenolytically when the reaction mixture is hydrogenated at 80° to 250° C. at a hydroge... | 05/15/2001 |
| 6207865 | Method for the hydrogenation of carbonyl compounds A carbonyl compound or a mixture of two or more carbonyl compounds is catalytically hydrogenated in the presence of a Raney copper catalyst in the form of nuggets.... | 03/27/2001 |
| 6204378 | Method for producing palatinitol A novel method for making palatinitol comprising a first step of epimerising isomaltose under conditions enabling a mixture of -D-glucopyranosyl-(1.fwdarw.6)-D-mannose and isomaltose to be achieved, a second step of catalytically hydrogenating the ... | 03/20/2001 |
| 6177598 | Preparation of sugar alcohols A process for the hydrogenation of a sugar or a mixture of two or more thereof comprises the following step: Bringing the sugar or the mixture of two or more thereof into contact with hydrogen in the presence of specific catalysts to give a sugar alcohol or ... | 01/23/2001 |
| 6124443 | Process for the hydrogenation of sugars Epimer-free sugar alcohols can be prepared from the corresponding sugars by catalytic hydrogenation with hydrogen in aqueous solution, the hydrogenation being carried out continuously at a hydrogen pressure of 100 to 400 bar and a reaction temperature of ... | 09/26/2000 |
