Basf Se Corporation

Thilo Hahn

Johann-Peter Melder

Alfred Oftring

Randolf Hugo

Katrin Baumann

Kirsten Dahmen

Jan Kurt Eberhardt

Wolfgang Siegel

Ekkehard Schwab

Bernd Stein

Thomas Hill

Volkmar Menger

Gunther Van Cauwenberge

Gerhard Fritz

Jürgen Moors

Tom Fremau

Tobias Staeb

Ulrich Köhler

Wolfgang Mägerlein

Frank Haese

Lucia Königsmann

Mirko Kreitschmann

Germain Kons

Tobias Stäb

Dominik Herbrecht

Jan Eberhardt

Lucia KÖNIGSMANN

A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is &#x3c;20 minutes.

Process for preparing pure triethanolamine (TEOA)

The present invention relates to a process for preparing 3-dimethylaminopropylamine (DMAPA) by reacting 3-dimethylaminopropionitrile (DMAPN) with hydrogen in the presence of a catalyst, wherein the DMAPN used has a content of 2-(dimethylaminomethyl)glutaronitrile (DGN) of 300 ppm by weight or less, based on the DMAPN used. Furthermore, the present invention relates to mixtures of DMAPN and DGN, wherein the weight ratio of DMAPN to DGN is in the range from 1 000 000:5 to 1 000 000:250.

DMAPN having a low DGN content and a process for preparing DMAPA having a low DGN content

Process for isomerizing linear alpha-olefins having from 10 to 25 carbon atoms over a heterogeneous catalyst.

Isomerization of linear alpha-olefins

A process for preparing a diamine from a corresponding aminoalkyl nitrile, which is prepared by reaction of a corresponding monoamine with a corresponding alkenyl nitrile in a continuous mode of operation, comprising the steps: a) introduction of the corresponding monoamine into a continuously conveyed reaction stream; b) introduction of the corresponding alkenyl nitrile into the reaction stream, with this already comprising the aminoalkyl nitrile on addition; c) reaction of the reaction stream in a first reaction region; d) at least partial transfer of the reaction stream into at least one second reaction region for further reaction; e) discharge of the reaction stream from the second reaction region after the reaction; f) introduction of the reaction stream discharged in step (a) into a reduction region; and g) reduction of the aminoalkyl nitrile present in the reaction stream to the corresponding diamine.

Process for preparing aminoalkyl nitriles and diamines from such nitriles

The invention relates to a process for preparing tetraethylenepentamine (TEPA) by hydrogenation of diethylenetriaminediacetonitrile (DETDN) over a catalyst. If appropriate, DETDN can also be present as a constituent of an amino nitrile mixture which additionally comprises diethylenetriaminemonoacetonitrile (DETMN).

Method for producing tetraethylenepentamine

A process for preparing amines of the formula I, by reacting a carbonyl compound of the formula II with an amine of the formula III where

One-stage reductive amination

Diastereoselective conversion of chiral imines of the formula I to amines of the formula II where the Rto Rradicals are each as defined in the description and Rand Rare different than one another, by converting the imine of the formula I in the presence of hydrogen and a heterogeneous copper-containing catalyst.

Process for diastereoselective conversion of chiral imines

The invention relates to a process for preparing triethylenetetramine (TETA), which, comprises the following steps:

Method for producing TETA by means of EDDN

The invention relates to a process for preparing an amino nitrile mixture comprising aminoacetonitrile (AAN) and from 5 to 70% by weight of iminodiacetonitrile (IDAN), which comprises heating crude AAN which is largely free of formaldehyde cyanohydrin (FACH-free) at a temperature of from 50 to 150&#xb0; C.

Method for producing aminonitriles

The present invention relates to a process for preparing an aminoalkyl nitrile by reaction of a corresponding monoamine with a corresponding alkenyl nitrile in a continuous mode of operation, which comprises the steps The invention further relates to a process for preparing a diamine from the aminoalkyl nitrile, suitable apparatuses for carrying out the processes and their corresponding use.

Process for preparing aminoalkylnitriles and diamines from such nitriles

The invention relates to a process for preparing an ethylene amine mixture, which comprises the following steps: Ethylenediamine (EDA) and/or diethylenetriamine (DETA) and also, if appropriate, further ethylene amines can be isolated from the ethylene amine mixtures obtained.

Method for producing ethyleneamines from untreated AAN

The invention relates to a process for preparing triethylenetetramine (TETA), which comprises hydrogenating ethylenediaminediacetonitrile (EDDN) in the presence of a catalyst and a solvent.

Method for producing triethylenetetramine

The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.

Method for producing ethylenediamine

The invention relates to a process for preparing an ethylene amine mixture, which comprises hydrogenating an amino nitrile mixture comprising at least 30% by weight of aminoacetonitrile (AAN) and at least 5% by weight of iminodiacetonitrile (IDAN) in the presence of a catalyst. Ethylenediamine (EDA) and/or diethylenetriamine (DETA) and, if appropriate, further ethylene amines can be isolated from the ethylene amine mixtures obtained.

Growing community of inventors

Kirchheimbolanden, Germany

Thilo Hahn