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Basf Se (Ellwanger & Baier Patentanwälte)

Basf Aktiengesellschaft Ludwigshafen

Karlsruhe Institute of Technology

Hermann Luyken

Peter Bassler

Robert Baumann

Johann-Peter Melder

Jens Scheidel

Gerd Haderlein

Michael Bartsch

Tim Jungkamp

Andreas Ansmann

Rolf Hartmuth Fischer

Frank Ohlbach

Guido Voit

Alwin Rehfinger

Rolf-Hartmuth Fischer

Wolfgang Siegel

Martin Merger

Stefan Maixner

Peter Pfab

Christoph Benisch

Boris Buschhaus

Randolf Hugo

Sebastian Ahrens

Jörg Pastre

Thomas Heidemann

Thomas Krug

Klemens Flick

Alfred Oftring

Andreas Deckers

Tom Witzel

Werner Schnurr

Eberhard Fuchs

Dagmar Pascale Kunsmann-Keitel

Boris Breitscheidel

Peter Zehner

Martin Ernst

Harald Rust

Karl-Heinz Ross

Rocco Paciello

Wolfgang Harder

Wilhelm Ruppel

Josef Ritz

Götz-Peter Schindler

Klaus Schubert

Tobias Aechtner

Stephanie Jaegli

Gordon Brasche

Barbara Becker

Andreas Leitner

Peter Baβler

Jens Baldamus

Miquel Angel Flores

Petra Deckert

Eva Koch

Markus Jegelka

Peter Wahl

Gunther Achhammer

Regine Helga Bebensee

Michael Lorenz

G&uuml;nther Achhammer

Andreas Brodhagen

Ansgar Gereon Altenhoff

Gabriele Iffland

Ralf Boehling

Axel Paul

Andrea Haunert

Veronika Wloka

Stefan Birnbach

Thomas Genger

Christian Miller

Anton Negele

Hans-Juergen Gosch

Helmut Winterling

Christian Gruenanger

Helmuth Menig

Thomas Schneider

Volker Vogt

Ferenc Molnar

Nicolas Marion

Claudia Merk

Achim Gritsch

Marek Pazicky

Andreas Glass

Hans-Martin Polka

Manfred Kraut

Verena Weiskopf

Guenther Achhammer

Peter Petersen

Lutz Hilprecht

Günther Achhammer

Jens Kehrer

Heinz Schafer

Miguel Angel Flores

William Todd Owens

Michael Schipper

Alois Wellisch

Albert Steiner

Andreas Bohnsack

Alwan Rehfinger

Gu/ Nther Achhammer

Zeljko Kotanjac

The present invention relates to a process for preparing alkanolamines and ethyleneamines in the liquid phase, by reacting ethylene glycol and/or monoethanolamine with ammonia in the presence of an amination catalyst which is obtained by reducing a catalyst precursor, wherein the preparation of the catalyst precursor comprises a step a) in which a catalyst precursor comprising one or more catalytically active components of Sn, Cu and Ni, and a step b) in which the catalyst precursor prepared in step a) is contacted with a soluble Re compound.

Method for the production of ethyleneamines

A process for continuous production of C-C-monoalkanolamines by reaction of a corresponding C-C-alkylene oxide with a molar excess of ammonia (NH), wherein aqueous ammonia is employed, in the liquid phase and in the presence of an acidic cation exchanger as catalyst which contains a crosslinked copolymer comprising acidic functional groups as the carrier matrix, wherein the cation exchanger has a total exchange capacity of not less than 1.8 eq/L.

Method for producing C-Cmono alkanol amines using an acid cation exchanger as a catalyst

The present invention relates to a process for purifying ethylenediamine, in which a) a mixture comprising water (H2O), ethylenediamine (EDA) and N-methylethylenediamine (NMEDA) is introduced into a rectification column (NMEDA removal column), where the mixture introduced comprises at least the amount of water as required for the formation of a high-boiling azeotrope of EDA and water at the appropriate bottom temperature; and the EDA-comprising bottom product from the NMEDA removal column is introduced into a second rectification column (EDA dewatering column), wherein the pressure at the top of the EDA dewatering column is adjusted such that the boiling temperature of the mixture obtained at the top is 10&#xb0; C. or higher than the bottom temperature of the NMEDA removal column, which comprises (i) partly or fully condensing the vapors from the top of the EDA dewatering column in a condenser which is cooled with a medium which is at least partly evaporated during the condensation and the vapor thus formed is used at least partly to heat the evaporator of the NMEDA removal column; and/or (ii) introducing the vapors from the top of the EDA dewatering column into the NMEDA removal column.

The invention relates to a process for preparing certain amines, wherein, in a first step, a corresponding amino alcohol is reacted with a suitable carbonyl compound and then, in a second step, the intermediate obtained in the first step is reacted with a suitable amine component to form the desired amine.

Method for synthesizing amines

The present invention relates to a process for purifying a mixture comprising MEG, MEA, EDA and DETA, and low boilers having a boiling point not higher than PIP and high boilers having a boiling point not lower than AEEA, wherein the process comprises the following steps:

The present invention relates to a process for removing NMEDA from a mixture comprising water (H2O), ethylenediamine (EDA) and N-methylethylenediamine (NMEDA) by a rectification in a rectification column (NMEDA removal), wherein the rectification is conducted at a bottom temperature Tof 155&#xb0; C. or less and the mixture comprises at least the amount of water as required for the formation of a high-boiling azeotrope of EDA and water at the corresponding bottom temperature.

Separation of n-methylethylenediamine from EDA-containing mixtures

The invention relates to processes for preparing alkanolamines and ethyleneamines in the liquid phase, by reacting ethylene glycol and/or monoethanolamine with ammonia in the presence of an amination catalyst comprising one or more active metals selected from Sn and the elements of groups 8, 9, 10 and 11 of the Periodic Table of the Elements, wherein the amination catalyst is obtained by reductive calcination of a catalyst precursor. The catalyst precursor here is preferably prepared by contacting a conventional or catalytic support material with one or more soluble compounds of the active metals and optionally one or more soluble compounds of added catalyst elements. The present invention further relates to a process for preparing an amination catalyst comprising one or more active metals selected from Sn and the elements of groups 8, 9, 10 and 11 of the Periodic Table of the Elements, the amination catalyst being obtained by reductive calcination of a catalyst precursor, wherein the reactor in which the catalyst precursor is reductively calcined is connected to a denox plant, and to the use of a denox plant in the preparation of amination catalysts.

Method for producing ethyleneamines

The present invention relates to a process for preparing alkanolamines and/or ethyleneamines in the liquid phase, by reacting ethylene glycol and/or monoethanolamine with ammonia in the presence of an amination catalyst comprising Co, Ru and Sn.

The present invention relates to a process for preparing ethyleneamines and/or alkanolamines, comprising the following steps:

The present invention relates to a two-stage hydroformylation process for producing pound of the formula (I) and to a process for producing a compound of the formula (V) comprising the two-stage hydroformylation process for producing a compound of the formula (I) followed by hydrogenation of the compound of the formula (I). 

Hydroformylation process for producing 1,6-hexanediol derivatives

The present invention relates to a process for preparing ethylenediamine (EDA), where the process comprises the steps a) to c). In step a), formaldehyde is reacted with hydrocyanic acid (HCN) to form formaldehyde cyanohydrin (FACH), where the hydrocyanic acid is completely free or largely free of sulfur dioxide (SO). The FACH prepared in this way is reacted with ammonia (NH) to form aminoacetonitrile (AAN) in step b), whereupon a hydrogenation of AAN in the presence of a catalyst to form EDA is carried out in step c).

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A process for the continuous preparation of adiponitrile by hydrocyanation of 3-pentenenitrile is described, wherein

Method for continuous production of adiponitrile

The present invention relates to a process for purifying ethylenediamine (EDA) by distillation, wherein the process comprises the steps a) and b). In step a), a mixture (G1) comprising water, EDA and N-methylethylenediamine (N-MeEDA) is fed into a distillation apparatus (D1), and the major part of the water comprised in the mixture (G1) is separated off overhead at a pressure of greater than 4.8 bara. From the bottom of (D1), the water-enriched mixture (G2) is fed into a distillation apparatus (D2) in step b). At the top of (D2), the major part of the N-MeEDA is distilled off. The stream (S3) obtained from the bottom of (D2) comprises EDA, with the components water and N-MeEDA comprised in the mixture (G1) having been largely or completely removed. Further distillation steps can optionally be carried out in order to obtain pure EDA, for example when diethylenetriamine (DETA) is additionally comprised in the mixture (G1). If ammonia is additionally comprised in the mixture (G1), an ammonia removal is preferably additionally carried out before carrying out the step a) in the process of the invention.

Method for the distillative purification of EDA

The present invention relates to a process for purifying adiponitrile (ADN), wherein crude ADN is introduced into a rectification apparatus (R). The rectification apparatus (R) comprises a first side draw and preferably also a second side draw, the first side draw being disposed below the crude ADN introduction point and the optional second side draw being disposed above the crude ADN introduction point. The first side draw is used to draw off a gaseous stream comprising ADN while the optional second side draw is used to draw off undesired by-products such as 1-amino-2-cyanocyclopentene (ACCP) which are often generated in ADN production and consequently may be present in the crude ADN. The gaseous stream from the first side draw of (R) is introduced into a second rectification apparatus (R). (R) is used to separate off ADN from remaining high boilers and any other by-products present, pure ADN being drawn off from (D) as overhead product. It is preferable when the process according to the invention employs crude ADN from a reaction of butadiene with hydrocyanic acid (HCN).

Method for purifying adipodinitrile (ADN)

A process is described for preparing 3-pentenenitrile, characterized by the following process steps:

Method for producing linear pentenenitrile

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Ludwigshafen, Germany

Hermann Luyken