Basf Aktiengesellschaft

Basf Se Corporation

Jan Nouwen

Johann-Peter Melder

Arthur H&ouml;hn

Frank Funke

Holger Evers

Thomas Krug

Matthias Frauenkron

Markus Siegert

Joachim Wulff-D&ouml;ring

Roderich Röttger

Wolfgang Siegel

Michael Hesse

Andreas Kramer

Bernd Wenderoth

Stephan Andreas Schunk

Till Gerlach

Gerhard Schulz

Wolfgang Reif

Horst Neuhauser

Knut Oppenl&auml;nder

Ladislaus Meszaros

Christian Miller

Gunther Van Cauwenberge

Knut Eger

Ellen Dahlhoff

Uwe Fidorra

Michael Jödecke

Michael St&ouml;sser

Frank Gutschoven

Philip Buskens

Bayram Aydin

Stefan K&auml;shammer

Philipp Buskens

Till Gerlack

Michael Roida

The present invention relates to a process for improving the color stability by postpurifying piperazine, the steps comprising The invention further provides a rapid test of aging for checking the improvement in the color stability.

Method for improving a piperazine colour stability

Preparation of ethyleneamines by reacting monoethanolamine (MEOA) with ammonia in the presence of a catalyst in a reactor (1) and separating the resulting reaction product, where ethylenediamine (EDA) obtained in the separation is reacted in a separate reactor (2) in the presence of a catalyst to give diethylenetriamine (DETA), and the resulting reaction product is passed to the separation of the reaction product resulting from reactor 1.

Method for producing ethyleneamines

Process for the preparation of ethylenamines, in particular diethylenetriamine (DETA), by continuous reaction of ethylenediamine (EDA) in the presence of a heterogeneous catalyst, where the reaction is carried out in a reaction column.

Method for producing ethylene-amines

Hydraulic fluids, in particular brake fluids for motor vehicles, comprising from 0.01 to 50 wt % of one or more cyclic carboxylates, or cyclic carboxamides, which can carry a linear or branched C -bis C alkyl group on the nitrogen atom.

Hydraulic fluids, containing cyclic carboxylic acid derivatives

Monoisopropylamine is prepared by reacting acetone with ammonia and with hydrogen at elevated temperature and elevated pressure in the presence of a catalyst, wherein the catalytically active mass of the catalyst comprises, after its preparation and before the treatment with hydrogen, from 20 to 90% by weight of aluminum oxide (Al O ), zirconium dioxide (ZrO ), titanium dioxide (TiO ) and/or silicon dioxide (SiO ), from 1 to 70% by weight of oxygen-containing compounds of copper, calculated as CuO, from 1 to 70% by weight of oxygen-containing compounds of nickel, calculated as NiO, and from 1 to 70% by weight of oxygen-containing compounds of cobalt, calculated as CoO.

Process for preparing monoisopropylamine

Process for preparing amines

Preparing amines

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Brecht, Belgium

Jan Nouwen