Patent application number | Description | Published |
20080255393 | Method for Purifying and Concentrating Dinitrogen Monoxide - The present invention relates to a process for purifying a gas mixture comprising dinitrogen monoxide and to the use of a gas mixture purified in this way as an oxidant for olefins. In a further embodiment, the present invention also relates to a process for preparing ketones comprising the oxidation of an olefin with a gas mixture which has been purified in accordance with the invention and comprises dinitrogen monoxide. | 10-16-2008 |
20080274032 | Method for Isolating N2o - The present invention relates to a process for purifying a gas mixture G-0 comprising dinitrogen monoxide, at least comprising the absorption of the gas mixture G-0 in an organic solvent, subsequent desorption of a gas mixture G-1 from the laden organic solvent, absorption of the gas mixture G-1 in water and subsequent desorption of a gas mixture G-2 from the laden water, and also to the use of a purified gas mixture which comprises dinitrogen monoxide and is obtainable by such a process as an oxidizing agent for olefins. | 11-06-2008 |
20080275276 | Method for Producing Cyclododecanone - A process for preparing cyclododecanone by reacting cyclododecene with dinitrogen monoxide, comprising in particular steps (I) and (II):
| 11-06-2008 |
20080306290 | Process for Epoxidizing Propene - The present invention provides a process for the epoxidation of propene which comprises reacting propene with hydrogen peroxide in the presence of methanol as solvent and a titanium zeolite catalyst, the process further comprising separating propylene oxide from the reaction mixture to obtain a mixture comprising methanol, water, at least one carboxylic acid and at least one carbonyl compound, wherein the at least one carboxylic acid is at least partially neutralized, said process optionally comprising a hydrogenation stage. | 12-11-2008 |
20090124827 | Method For Producing Tetracarboxylic Acids - A process for preparing tetracarboxylic acids of the general formula I | 05-14-2009 |
20090149666 | Method for the production of bisepoxides and dithiols - Process for the preparation of bisepoxides, wherein a conjugated diene of the formula I | 06-11-2009 |
20090281357 | METHOD FOR THE PRODUCTION OF CYCLIC KETONES - The present invention relates to a process for preparing a cyclic ketone having from 7 to 16 carbon atoms, which comprises at least the steps
| 11-12-2009 |
20090326276 | METHOD FOR THE PRODUCTION OF CYCLIC KETONES - The present invention relates to a process for preparing a cyclic ketone having from 7 to 16 carbon atoms, which comprises at least the steps | 12-31-2009 |
20100003173 | METHOD FOR PRODUCING PROPYLENE OXIDE - Process for preparing propylene oxide, which comprises at least the steps (i) and (ii):
| 01-07-2010 |
20100018389 | PROCESS FOR ISOLATING N2O - The present invention relates to a process for purifying a gas mixture G-0 comprising dinitrogen monoxide, at least comprising the contacting of the gas mixture G-0 with a solvent mixture (I) at least comprising 50% by weight of water based on the overall solvent mixture (1), the pH of the solvent mixture (I) being in the range from 3.5 to 8.0, the desorption of a gas mixture G-1 from a composition (A), the contacting of the gas mixture G-1 with a solvent mixture (11) at least comprising 50% by weight of water based on the overall solvent mixture (11), the pH of the solvent mixture (11) being in the range from 2.0 to 8.0, and the desorption of a gas mixture G-2 from a composition (B), the pH being based in each case on a measurement with a glass electrode, and to the use of gas mixtures obtainable by a process according to the invention as oxidizing agents for olefins. | 01-28-2010 |
20100179352 | PROCESS FOR THE PREPARATION OF CYCLOPENTANONE - The invention relates to a method for producing cyclopentanone. Said method comprises the step of reacting a mixture (G1), which contains at least cyclopentene, with a mixture (G2), which contains at least dinitrogen monoxide. The reaction is carried out in at least one reactor (R1) having channels with a diameter in the range of 0.1 mm to 50 mm, the reactor comprising at least two zones (Z1) and (Z2) having channels with different diameters and the diameters of the channels of zone (Z1) being smaller than the diameter of the channels of zone (Z2). | 07-15-2010 |
20100180802 | C10 ALKANOIC ACID GLYCIDYL ESTERS AND USE THEREOF - Glycidyl 2-propylheptanoate, glycidyl 4-methyl-2-propylhexanoate or a mixture of these (referred to collectively for short as glycidyl ester). | 07-22-2010 |
20100190869 | PROCESS FOR THE ISOLATION OF DODECATRIENAL AND ITS USE AS AROMA SUBSTANCE - The present invention relates to a process for preparing at least one compound with Z−1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, at least comprising the stages:
| 07-29-2010 |
20100191018 | PROCESS FOR PREPARING PURE CYCLODODECANONE - The present invention relates to a process for preparing at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group, at least comprising the stages:
| 07-29-2010 |
20100305369 | PROCESS FOR THE PREPARATION OF AN OLEFIN OXIDE - The present invention relates to a continuous process for the preparation of an olefin oxide wherein an olefin is reacted with a hydroperoxidein the presence of a catalyst, and wherein the reaction which is carried out in at least three reactors operated in parallel is controlled by specifically adjusting the catalyst loads in the reactors. | 12-02-2010 |
20110004025 | METHOD FOR PRODUCING OLEFINICALLY UNSATURATED CARBONYL COMPOUNDS BY OXIDATIVE DEHYDROGENATION OF ALCOHOLS - A process for preparing olefinically unsaturated carbonyl compounds by oxidative dehydrogenation in an oxygenous atmosphere over a supported catalyst which comprises gold and optionally further noble metals at temperatures in the range from 50 to 240° C. | 01-06-2011 |
20110004032 | METHOD FOR ISOMERIZING OLEFINICALLY UNSATURATED ALCOHOLS - A process for isomerizing olefinically unsaturated alcohols over supported noble metal catalysts with a support based on carbon in an oxygenous atmosphere. | 01-06-2011 |
20110023713 | PROCESS FOR PURIFYING N2O - The present invention relates to a process for purifying a gas mixture comprising dinitrogen monoxide, at least comprising the treatment of a gas mixture G-0 comprising dinitrogen monoxide to obtain a gas mixture G-A, at least comprising the absorption of the gas mixture G-0 in a solvent mixture S-I to obtain an offgas stream and a composition C-A, and the desorption of a gas mixture G-1 from the composition C-A to obtain a solvent mixture S-I′, subsequent condensation of the gas mixture G-A to obtain a liquid composition C-1 comprising dinitrogen monoxide and a gaseous mixture G-K, wherein the gaseous mixture G-K is recycled into the process. | 02-03-2011 |
20110046401 | PROCESS FOR PREPARING GLYCIDYL ESTERS - Process for preparing glycidyl esters, wherein carbonate esters of the formula I | 02-24-2011 |
20110046413 | PROCESS FOR PREPARING 4-PENTENOIC ACID - The present invention relates to a process for preparing 4-pentenoic acid, at least comprising the oxidation of a mixture (G) comprising 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide, and to the use of a mixture (G) comprising 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide for preparing 4-pentenoic acid. In the context of the present invention, the mixture (G) is preferably obtained as a by-product of the oxidation of cyclopentene to cyclopentanone by means of dinitrogen monoxide. | 02-24-2011 |
20110065939 | METHOD FOR THE SEPARATION OF ACETONITRILE FROM WATER - A method for separating acetonitrile from water, comprising (i) providing a stream S1 containing at least 95 wt.-%, based on the total weight of S1, acetonitrile and water, wherein the weight ratio of acetonitrile:water is greater than 1; (ii) adding a stream P, comprising at least 95 wt.-% C3, based on the total weight of stream P, to S1 to obtain a mixed stream S2, C3 being propene optionally admixed with propane with a minimum weight ratio of propene:propane of 7:3; (iii) subjecting S2 to a temperature of 92° C. at most and a pressure of at least 10 bar, obtaining a first liquid phase L1 essentially consisting of C3, acetonitrile, and water, and a second liquid phase L2 essentially consisting of water and acetonitrile wherein the weight ratio of acetonitrile:water in L2 is less than 1; (iv) separating L1 from L2. | 03-17-2011 |
20110152576 | PROCESS FOR PREPARING CYCLIC KETONES - The present invention relates to a process for preparing at least one monocyclic ketone having from 4 to 20 carbon atoms by reacting a mixture G | 06-23-2011 |
20110218323 | PROCESS FOR PREPARING CYCLIC DIAMINES - The present invention relates to a process for preparing a cyclic diamine, comprising the reaction of at least one cyclic alkene with a gas mixture (G) comprising dinitrogen the subsequent conversion of monoxide to give at least one cyclic ketone and then converting the at least one cyclic ketone to a cyclic diamine. The invention also relates to the use of a cyclic diamine with primary and secondary amine functions thus obtained to prepare polyamides and polyurethanes. | 09-08-2011 |
20110269996 | PROCESS FOR PREPARING KETONES BY REACTING 1,1-DISUBSTITUTED OLEFINS WITH N2O - The present invention relates to a process for preparing a ketone, comprising the reaction of a composition (I) at least comprising a 1,1-disubstituted olefin, with a composition comprising dinitrogen monoxide, wherein the reaction is effected in the presence of a solvent which comprises at least one proton-donating functional group. | 11-03-2011 |
20110319657 | Process for the Preparation of Formic Acid - Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid and a tertiary amine (I) in a molar ratio of from 0.5 to 5 is produced by combining tertiary amine (I) and a formic acid source, from 10 to 100% by weight of the secondary components present therein are separated off and formic acid is removed by distillation in a distillation apparatus at a bottom temperature of from 100 to 300° C. and a pressure of from 30 to 3000 hPa abs from the liquid stream obtained, the bottom discharge from the distillation apparatus being separated into two liquid phases and the upper liquid phase being recycled to the formic acid source and the lower liquid phase being recycled for separating off the secondary components and/or to the distillation apparatus. | 12-29-2011 |
20120065413 | PROCESS FOR PRODUCING PROPYLENE OXIDE - A process for producing propylene oxide comprising reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (G1) comprising propylene oxide, unreacted propene, and oxygen; separating propylene oxide from mixture (G1) to give a mixture (GII) comprising propene and oxygen; and adding hydrogen to mixture (GII) and reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising copper in elemental and/or oxidic form on a support, wherein copper is present on the support in an amount of 30 to 80 wt.-% based on the whole catalyst and calculated as CuO. | 03-15-2012 |
20120108779 | METHOD FOR PRODUCING POLYOLS ON THE BASIS OF RENEWABLE RESOURCES - The invention provides a method for producing polyols, comprising the steps of
| 05-03-2012 |