Patent application number | Description | Published |
20090318715 | Method for the Production of D,L-2-Hydroxy-4-Alkylthio Butyric Acid - The present invention relates to a process for preparing compounds of the formula (I) | 12-24-2009 |
20100204438 | METHOD FOR PRODUCING TEDA DERIVATIVES - The present invention relates to a process for preparing triethylenediamine (TEDA) derivatives, comprising the following steps:
| 08-12-2010 |
20110218270 | USE OF LINEAR TRIETHYLENTETRAMINE AS CURING AGENT FOR EPOXY RESINS - The present invention relates to an amine composition comprising linear triethylene-tetramine and one or more amine compounds selected from the group consisting of tertiary amines derived from the condensation of ethylenediamine and methyl-substituted compounds derived from linear triethylenetetramine as well as a method of production for said composition. | 09-08-2011 |
20110294977 | POLYALKYLENEPOLYAMINES BY HOMOGENEOUSLY CATALYZED ALCOHOL AMINATION - The invention relates to a process for the preparation of polyalkylenepolyamines by catalyzed alcohol amination, in which | 12-01-2011 |
20120101303 | METHYL-SUBSTITUTED TETA COMPOUNDS - The invention relates to a process for preparing triethylenetetramine substituted by at least one methyl group (Me-TETA or methyl-substituted TETA compounds). Me-TETA is prepared by hydrogenating biscyanomethylimidazolidine (BCMI) in the presence of a catalyst. The present invention further relates to methyl-substituted TETA compounds as such. The present invention further relates to the use of methyl-substituted TETA compounds as a reactant or intermediate in the production of, for example, coatings or adhesives. | 04-26-2012 |
20120232292 | PROCESS FOR THE PREPARATION OF PRIMARY AMINES BY HOMOGENEOUSLY CATALYZED ALCOHOL AMINATION - Process for the preparation of primary amines which have at least one functional group of the formula (—CH | 09-13-2012 |
20120232293 | PROCESS FOR PREPARING DI-, TRI- AND POLYAMINES BY HOMOGENEOUSLY CATALYZED ALCOHOL AMINATION - Process for preparing primary amines which have at least one functional group of the formula (—CH | 09-13-2012 |
20120232294 | PROCESS FOR PREPARING ALKANOLAMINES BY HOMOGENEOUSLY CATALYZED ALCOHOL AMINATION - Process for preparing alkanolamines which have a primary amino group (—NH | 09-13-2012 |
20120232309 | PROCESS FOR THE PREPARATION OF PRIMARY AMINES BY HOMOGENEOUSLY CATALYZED ALCOHOL AMINATION - Preparing a primary amine by alcohol amination of alcohol with ammonia and elimination of water includes reacting, in a homogeneously catalyzed reaction, a mixture of alcohol, ammonia, nonpolar solvent, and catalyst, in a liquid phase, to obtain a product mixture. The process then includes phase separating the product mixture into a polar product phase and a nonpolar product phase, and separating off the nonpolar product phase. At least some of the nonpolar phase returns to the homogenously catalyzed reaction. The process further includes separating off amination product from the polar product phase. At least some of the catalyst is in the nonpolar phase, and the catalyst accumulates in the nonpolar phase. | 09-13-2012 |
20130053536 | PROCESS FOR PREPARING EDDN AND/OR EDMN AND A PROCESS FOR PREPARING DETA AND/OR TETA - A process for preparing EDDN and/or EDMN by
| 02-28-2013 |
20130053537 | PROCESS FOR REGENERATING RANEY CATALYSTS - A process for regenerating Raney catalysts by treating the catalyst with liquid ammonia with a water content of less than 5% by weight and with hydrogen having a partial pressure of 0.1 to 40 MPa in the temperature range from 50 to 350° C. for at least 0.1 hour. | 02-28-2013 |
20130053538 | PROCESS FOR PREPARING EDFA AND/OR EDMFA AND DETA AND/OR TETA - A process for reacting ethylenediamine (EDA) with formaldehyde to give ethylenediamine-formaldehyde adduct (EDFA) and/or ethylenediamine-monoformaldehyde adduct (EDMFA), which comprises performing the reaction of FA with EDA at a temperature in the range from 20 to 70° C. | 02-28-2013 |
20130053539 | PROCESS FOR PREPARING EDDN AND/OR EDMN AND PROCESS FOR PREPARING DETA AND/OR TETA - A process for preparing EDDN and/or EDMN by conversion of FA, HCN and EDA, the reaction being effected in the presence of water, wherein the reaction mixture from the conversion of EDA, HCN and FA is cooled after leaving the reactor. | 02-28-2013 |
20130053540 | PROCESS FOR PREPARING TETA - A process for preparing TETA and/or DETA by the action of EDDN and/or EDMN with hydrogen in the presence of a catalyst, wherein the catalyst used is a catalyst of the Raney type and the pressure in the course of hydrogenation is in the range from 170 to 240 bar. | 02-28-2013 |
20130053584 | PROCESS FOR PREPARING EDDN AND/OR EDMN BY REACTING EDFA AND/OR EDMFA WITH HCN - A process for reacting ethylenediamine-formaldehyde adduct (EDFA) and/or ethylene-diamine-monoformaldehyde adduct (EDMFA) with hydrogen cyanide (HCN) in a reactor with limited backmixing at a temperature in the range from 20 to 120° C., wherein the residence time in the reactor is 300 seconds or less. | 02-28-2013 |
20130053597 | PROCESS FOR PREPARING EDDN, EDMN, TETA AND DETA - A process for preparing ethylenediaminediacetonitrile (EDDN) and/or ethylenediamine-monoacetonitrile (EDMN) by conversion of formaldehyde (FA), hydrogen cyanide (HCN) and ethylenediamine (EDA), which comprises using stabilizer-free HCN, or HCN which has been stabilized with an organic acid, in the process. | 02-28-2013 |
20130060002 | PROCESS FOR WORKING UP REACTION OUTPUTS FROM THE HYDROGENATION OF EDDN OR EDMN - A process is disclosed for separating the output from the reaction of EDDN or EDMN with hydrogen in the presence of THF, a catalyst, TETA or DETA, water, and optionally organic compounds having higher and lower boiling points than TETA or DETA. Hydrogen is removed, and the output is supplied to a distillation column DK1 in which an azeotrope, optionally comprising organic compounds with a boiling point lower than TETA or DETA, is removed from the top. A product comprising TETA or DETA is removed from the bottom and passed cinto a distillation column DK2, removing THF. A stream comprising TETA or DETA passes from the bottom of DK2. The DK1 azeotrope is condensed. Phase separation is induced by the addition of an organic solvent essentially immiscible with water, and the mixture is separated. The organic phase is recycled into DK1 and the water phase is discharged. | 03-07-2013 |
20130079492 | PROCESS FOR PREPARING EDDN AND EDMN - A process for preparing EDDN and/or EDMN by conversion of FA, HCN and EDA, the reaction being effected in the presence of water, and, after the conversion, water being depleted from the reaction mixture in a distillation column, which comprises performing the distillation in the presence of an organic solvent which has a boiling point between water and EDDN and/or EDMN at the distillation pressure existing in the column or which forms a low-boiling azeotrope with water. | 03-28-2013 |
20130085286 | Unknown - A process for preparing amines of the formula (II) | 04-04-2013 |
20130090452 | PROCESS FOR PREPARING EDDN AND/OR EDMN BY CONVERSION OF FACH AND EDA - A process for reacting formaldehyde cyanohydrin (FACH) with ethylenediamine (EDA) in a reactor with limited backmixing at a temperature in the range from 20 to 120° C., wherein the residence time in the reactor is 300 seconds or less. | 04-11-2013 |
20130090453 | Process for preparing TETA and DETA - A process for preparing TETA and/or DETA by hydrogenating EDDN and/or EDMN with hydrogen in the presence of a catalyst, which comprises preparing EDDN and/or EDMN from FA, HCN and EDA in the presence of toluene as a solvent and performing the hydrogenation in suspension mode in the presence of THF. | 04-11-2013 |
20150018457 | USE OF LINEAR TRIETHYLENTETRAMINE AS CURING AGENT FOR EPOXY RESINS - The present invention relates to an amine composition comprising linear triethylenetetramine and one or more amine compounds selected from the group consisting of tertiary amines derived from the condensation of ethylenediamine and methyl-substituted compounds derived from linear triethylenetetramine as well as a method of production for said composition. | 01-15-2015 |