Basf Aktiengesellschaft

Basf Se Corporation

Basf Aktiengesekkschaft

Thomas Preiss

Jochem Henkelmann

Randolf Hugo

Kirsten Wenz

Sabine Jourdan

Rolf Pinkos

Alexander Weck

Arnd B&ouml;ttcher

Thomas Ruhl

Rudolf Erich Lorenz

Susanne Stutz

Joaquim Henrique Teles

Joachim Wulff-Doring

Thomas Genger

Johann-Peter Melder

Rainer Blum

Volker Schehlmann

Horst Westenfelder

Harald Keller

Alois Kindler

Boris Aleksandrovich Trofimov

Holger Friedrich

Marc Heider

Arthur Hohn

Peter Keller

Sabine Weiguny

Melanie Brunner

Holger Evers

Heinz Rutter

Martin Schafer

Arnd Bottcher

Beatrice Röβler

Harald Meissner

Beatrice Rössler

Rolf Wambsganβ

Rolf Gleiter

Christel De Backer

Alexander M Vasiltsov

Albina Mikhaleva

Beatrice Rößler

A process for preparing cyclododecanone by reacting cyclododecene with dinitrogen monoxide, comprising in particular steps (I) and (II):

Process for the preparation of cyclododecanone

The invention relates to a process for preparing &#x3b2;-aminopropionic acid derivatives by reacting a primary or secondary amine with an acrylic acid derivative, wherein comprises

Method for the production of &#x3b2;-aminopropionic acid derivatives

A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile, by contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent (quench), and hydrogenating the phthalonitrile in the resulting quench solution or suspension, wherein the organic solvent is N-methyl-2-pyrrolidone (NMP).

Method for producing xylylenediamine (XDA)

A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile and hydrogenating the phthalonitrile, which comprises contacting the vaporus product of the ammoxidation stage directly with a liquid organic solvent or with molten phthalonitrile (quench), partly or fully removing components having a boiling point lower than phthalonitrile (low boilers) from the resulting quench solution or suspention or phthalonitrile melt and, before the hydrogenation, of the phthalonitrile, not removing any products having a boiling point higher than phthalonitrile (high boilers).

A process for preparing a ketone, in particular cyclododecanone, by reacting cyclododecatriene with dinitrogen monoxide to obtain cyclododecadienone and hydrogenating the resulting cyclododecadienone, in particular to give cyclododecanone.

Method for producing a ketone

A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile and hydrogenating the phthalonitrile, which comprises contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent or with molten phthalonitrile (quench), partly or fully removing components having a boiling point lower than phthalonitrile (low boilers) from the resulting quench solution or suspension or phthalonitrile melt and, after the low boiler removal and before the hydrogenation, removing products having a boiling point higher than phthalonitrile (high boilers).

Preparation of xylylenediamine (XDA)

A process for preparing xylylenediamine by continuously hydrogenating liquid phthalonitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, which comprises mixing a stream of a phthalonitrile melt in liquid form by means of a mixer unit with a stream of liquid ammonia and conducting the liquid mixture into the hydrogenation reactor.

Method for the production of diaminoxylene by continuous hydrogenation of liquid phthalonitrile

A process for preparing xylylenediamine by continuously hydrogenating liquid phthalonitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, in which a portion of the reactor effluent is recycled as a liquid circulation stream continuously to the reactor inlet (circulation mode), in which a stream of a phthalonitrile melt in liquid form is conducted by means of a mixer unit into the circulation stream around the hydrogenation reactor, the phthalonitrile conversion in the reactor on single pass being greater than 99%, and the circulation stream consisting to an extent of greater than 93% by weight of liquid ammonia and xylylenediamine and not comprising any further solvent for phthalonitrile.

A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile by contacting the vaporous product of this ammoxidation stage directly with a liquid organic solvent (quench), removing products having a boiling point higher than phthalonitrile (high boilers) from the resulting quench solution or suspension and hydrogenating the phthalonitrile, wherein the organic solvent used for the quench is N-methyl-2-pyrrolidone (NMP), after the removal of the high boilers and before the hydrogenation, there is a partial or complete removal of the NMP and/or of products having a boiling point lower than phthalonitrile (low boilers) and the phthalonitrile for the hydrogenation step is dissolved or suspended in an organic solvent or in liquid ammon.

Method for the production of N-alkenyl-amides

Stabilized composition of O- and N-vinyl compounds and use of ammonium salts as stabilizers

Method for producing N-alkenyl amides

Preparation of vinylphosphonic acid compounds

In the process for the preparation of vinylsilanes by reacting acetylenic hydrocarbons with silanes which have at least one silicon-bonded hydrogen atom in the liquid phase in the presence of a catalyst, the silane is added to the liquid phase. In particular, the reaction is carried out at superatmospheric pressure, and the spent acetylenic hydrocarbon is replenished during the reaction while maintaining a pressure which is constant during the entire reaction.

Preparation of vinylsilanes

Preparation of alkynediols

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Weisenheim am Sand, Germany

Thomas Preiss