Basf Aktiengesellschaft

Basf Se Corporation

Basf Akteingesellschaft

Basf Altiengesellschaft

Wolfgang Mackenroth

Ulrich Penzel

Ekkehard Schwab

Eckhard Stroefer

Rainer Becker

Walter Seufert

Hans-Juergen Pallasch

Martin Sohn

Ernst Buschmann

Hartwig Voss

Stefan Maixner

Petr Kubanek

Filip Nevejans

Wolfgang Hoelderich

Wolfgang Krieg

Sven Crone

Filip Deberdt

Peter Zehner

Walter Himmele

Torsten Mattke

Oliver Bey

Hartmut Riechers

Andreas Raichle

Carsten Knoesche

Kai Thiele

Andreas Woelfert

Andreas Brodhagen

Samuel Neto

Heinrich Hermann

Andreas Wölfert

Heinz Eckhardt

Hans Volkmar Schwarz

Joana Coelho Tsou

Jürgen Gebauer

Wolfgang Seppelt

Dominic Vanoppen

Steffen Oehlenschläger

Steffen Oehlenschlaeger

Frederik Van Laar

Johannes Buettner

Peter Van Den Abeel

Ulrich Neumann

Jan D Jacobs

Joachim-Thierry Anders

Bernd Weidner

Konrad Morgenschweis

Karl Hoelemann

Ulrich Klein

Tsung-Chieh Cheng

Johannes Jacobs

Kerstin Heinen

Gunter Georgi

Gregor Schuermann

Guenter Renz

Markus Maurer

Christiane Mackenroth

Wolfgang Voigt

Peter Konieczny

Rene Leuthold

Karl Hölemann

Christiane Brueckner

Jacobus J DeKramer

Roland Milli

Frederick Van Laar

Gerald Molz

Juergen Gebauer

Sven Boehmeke

Johannes Büttner

Myung Un Won

Christian Tragut

Frank Bok

Roland Mueller

Roland MÜLLER

The invention provides a process for preparing aromatic amines by catalytically hydrogenating the corresponding nitro compounds, especially for preparing tolylenediamine by hydrogenating dinitrotoluene, which comprises using hydrogenation catalysts in which the active component present is a mixture of platinum, nickel and an additional metal on a support.

Method for producing amines with a catalyst containing platinum, nickel and an additional metal

The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. Here, the cooling medium surrounds the tubes of the heat exchanger of the apparatus of the invention whereas the reaction takes place in the tubes.

Apparatus and process for the continuous reaction of liquids with gases

A process for the preparation of mononitroaromatics and dinitroaromatics, in which a hydrate melt of at least one metal nitrate M(NO)is used as a nitrating medium, it being possible for M to be the metals Fe, Cr, Y, La, Ce, Al, Bi and In, and the metal nitrate having a water content of from 4 to 9 mol of water per M(NO), leads to simplifications of the process and improved yields.

Process for the preparation of nitrated aromatics and mixtures thereof

The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber () to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice () arranged coaxially to the mixing chamber () and the phosgene being added through feed orifices () in at least two planes () arranged at right angles to the axis () of the mixing chamber (), or the phosgene being added through the orifice () arranged coaxially to the mixing chamber and the amine through the feed orifices () in at least two planes () arranged at right angles to the axis () of the mixing chamber (). At least one plane () is arranged upstream and at least one plane () downstream of the orifice () arranged coaxially to the mixing chamber () in main flow direction of the reaction mixture. The mean residence time of the reaction mixture in the mixing chamber () is not more than 20 ms.

Process for preparing aromatic isocyanates

A process for preparing tolylenediamine by hydrogenating dinitrotoluene with hydrogen in the presence of a suspended catalyst

Method for producing toluylenediamine by hydrogenating dinitrotoluene

The present invention provides a process for preparing dinitrotoluene, comprising the steps of

Method for producing dinitrotoluene

The invention relates to a process for preparing polyisocyanates by reacting organic amines with phosgene, wherein the reaction is carried out in at least three stages, with the first stage being carried out in a mixing apparatus, the second stage in at least one residence apparatus and the third stage in at least one separation apparatus and the pressure in each successive stage being lower than that in the previous stage.

Method for the continuous production of isocyanates

A process for aminating hydrocarbons with ammonia, wherein the Ncontent in the mixture at the reactor exit is less than 0.1% by volume based on the total volume of the mixture at the reactor exit.

Direct amination of hydrocarbons

A process for aminating hydrocarbons with ammonia in the presence of catalyst (i) which catalyzes the amination, which comprises supplying oxidizing agent to the reaction mixture and reacting the oxidizing agent with hydrogen which is formed in the amination in the presence of a catalyst (ii) which catalyzes this reaction with hydrogen.

The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.

Separation of a substance mixture consisting of hydrogen chloride and phosgene

The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.

Method for separating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent

The present invention provides a process for hydrogenating aromatic nitro compounds to the corresponding amines in the presence of hydrogenation catalysts, which comprises using hydrogenation catalysts in which nickel and platinum are present on a support in the form of an alloy having an atomic ratio of nickel to platinum in the alloy of between 30:70 and 70:30.

Method for the production of amines

The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region (), a lower combined column region (), a feed section () having a rectifying section () and stripping section (), and also a withdrawal section () having a rectifying section () and stripping section (), which comprises the following steps:

Method for the distillative recovery of toluylenediamine

The invention provides a process for preparing amines by catalytic hydrogenation of nitroaromatics and subsequent removal of the catalysts from the reaction mixture, which contains at least one aromatic amine and water, which comprises carrying out the removal of the catalysts by means of membrane filtration, which is carried out at a pressure on the suspension side of from 5 to 50 bar, a pressure difference between the suspension side and the permeate side of at least 0.3 bar and a flux rate on the suspension side of from 1 to 6 m/s.

A process for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id),

Preparation, intermediates for the preparation and the use of a mixture

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Bad Duerkheim, Germany

Wolfgang Mackenroth