Class / Patent application number | Description | Number of patent applications / Date published |
564448000 | Forming amine group of alicyclic ring containing compound directly by reduction | 11 |
20090048466 | PROCESS FOR PREPARING AMINES BY CONDITIONING THE CATALYST WITH AMMONIA - The invention relates to a process for preparing amines by conditioning the catalyst with ammonia. | 02-19-2009 |
20090253937 | ELECTROCHEMICAL PRODUCTION OF STERICALLY HINDERED AMINES - The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) | 10-08-2009 |
20100036168 | CONTINUOUS PROCESS FOR THE HYDROGENATION OF 3-CYANO-3,5,5-TRIMETHYL-CYCLOHEXYLIMINE - The present invention relates to a continuous process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine by reacting a feed stream comprising 3-cyano-3,5,5-trimethylcyclohexylimine with hydrogen and ammonia over hydrogenation catalysts, wherein the basicity of the reaction mixture is increased during the reaction by bringing the reaction mixture into contact with a basic compound which is not ammonia and/or a basic catalyst after part of the 3-cyano-3,5,5-trimethylcyclohexylimine has been reacted. | 02-11-2010 |
20120245389 | PROCESS FOR HYDROGENATING NITRILES - The present invention relates to a process for hydrogenating organic nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the shaped body catalyst is arranged in a fixed bed, wherein the shaped body in the shape of spheres or rods has in each case a diameter 3 mm or less, in the shape of tablets a height of 4 mm or less, and in the case of all other geometries in each case has an equivalent diameter L=1/a′ of 0.70 mm or less, where a′ is the external surface area per unit volume (mm | 09-27-2012 |
20120245390 | PROCESS FOR HYDROGENATING NITRILES - The present invention relates to a process for hydrogenating nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the catalyst is arranged in a fixed bed, wherein the cross-sectional loading in the reactor is in the range from 5 kg/(m | 09-27-2012 |
20120245391 | METHOD OF PREPARING NERAMEXANE OR A SALT THEREOF - Method of preparing 1-amino-1,3,3,5,5-pentamethylcyclohexane or a pharmaceutically acceptable salt thereof (Neramexane), comprising step (iv):
| 09-27-2012 |
20130172622 | PROCESS FOR MAKING TERTIARY AMINOALCOHOL COMPOUNDS - Provided is a process for making a tertiary aminoalcohol compound. The process comprises using an excess amount of a carbonyl compound in a condensation step between the carbonyl compound and a nitroalkane, and conducting a hydrogenation/alkylation step to produce the tertiary aminoalcohol. The process uses fewer steps than conventional processes. | 07-04-2013 |
20130197269 | METHOD FOR PRODUCING BIS(AMINOMETHYL)CYCLOHEXANES - A method for producing bis(aminomethyl)cyclohexanes includes a nuclear hydrogenation step of producing hydrogenated phthalic acids or phthalic acid derivatives by nuclear hydrogenation of phthalic acids or phthalic acid derivatives of at least one selected from the group consisting of phthalic acids, phthalic acid esters, and phthalic acid amides; a cyanation step of treating the hydrogenated phthalic acids or phthalic acid derivatives obtained in the nuclear hydrogenation step with ammonia, thereby producing dicyanocyclohexanes; and an aminomethylation step of treating the dicyanocyclohexanes obtained in the cyanation step with hydrogen, thereby producing bis(aminomethyl)cyclohexanes. In the cyanation step, metal oxide is used as a catalyst, and the obtained dicyanocyclohexanes have a metal content of 3000 ppm or less. | 08-01-2013 |
20130197270 | METHOD FOR PRODUCING TRANS-1,4-BIS(AMINOMETHYL) CYCLOHEXANE - A method for producing trans-1,4-bis(aminomethyl)cyclohexane includes a nuclear hydrogenation step of producing a hydrogenated terephthalic acid or terephthalic acid derivative by nuclear hydrogenation of a terephthalic acid or terephthalic acid derivative, the terephthalic acid or terephthalic acid derivative being at least one selected from the group consisting of terephthalic acid, terephthalic acid ester, and terephthalic acid amide; a cyanation step of treating the hydrogenated terephthalic acid or terephthalic acid derivative with ammonia, thereby producing 1,4-dicyanocyclohexane, and producing trans-1,4-dicyanocyclohexane from the obtained 1,4-dicyanocyclohexane; and an aminomethylation step of treating the trans-1,4-dicyanocyclohexane with hydrogen, thereby producing trans-1,4-bis(aminomethyl)cyclohexane. | 08-01-2013 |
20130261341 | PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE - The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or IPDA for short, by means of catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminating hydrogenation) of | 10-03-2013 |
20150315133 | Method For Preparing 3-Aminomethyl-3,5,5-Trimethyl Cyclohexylamine - The present invention provides a method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine. The method comprises: a) reacting 3-cyano-3,5,5-trimethyl cyclohexanone with excess primary amine as well as removing the water generated from the reaction, so that IPN is substantially converted into imine compounds; b) in the presence of an ammonolysis catalyst, mixing the product of step a) with liquid ammonia, making the imine compound perform ammonolysis reaction to generate 3-cyano-3,5,5-trimethyl cyclohexylimine and the primary amine; and c) in the presence of hydrogen and a hydrogenation catalyst, hydrogenating 3-cyano-3,5,5-trimethyl cyclohexylimine obtained in step b) to obtain 3-aminomethyl-3,5,5-trimethyl cyclohexylamine. The method of the present invention avoids the generation of 3,5,5-trimethyl cyclohexanol and 3-aminomethyl-3,5,5-trimethyl cyclohexanol as the major by-products in the prior art, thereby improving the yield of 3-aminomethyl-3,5,5-trimethyl cyclohexylamine. | 11-05-2015 |