Symrise Gmbh & Co Kg

Bayer Aktiengesellschaft

Bayer Materialscience Ag

Matthias Brandt

Thomas Turek

Stephan Klein

Ingo Wöhrle

Peter Esser

Aurélia Reckziegel

Gerhard Wegener

Peter Lehner

Susanne Buchholz

Stephen Klein

The invention describes a process for the production of aromatic amines by the catalytic hydrogenation of aromatic nitro compounds, with the process being characterized by at least one catalytic hydrogenation step and the catalyst consists at least of a monolithic support and a catalytically active coating.

Process for the production of aromatic amines by heterogeneously catalysed hydrogenation

The present invention relates to supported catalysts based on ReO/(&#x2014;AlOfor use in the preparation of cycloalkadienes in a metathesis reaction, a process for preparing cycloalkadienes in the presence of these supported catalysts and also the use of the resulting cycloalkadienes for preparing fragrances.

Metathesis catalysts

The present invention relates to a process for preparing cycloalkadienes using supported catalysts based on ReO/&#x3b3;-AlOand also to the use of the resulting cycloalkadienes for the preparation of fragrances.

Process for preparing cycloalkadienes

The present invention relates to a process for the production of a dinitronaphthalene isomer mixture, in which naphthalene and/or 1-nitronaphthalene is reacted with nitric acid in the presence of a zeolite.

Process for the production of a dinitronaphthalene isomer mixture with a high proportion of 1,5-dinitronaphthalene

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Düsseldorf, Germany

Matthias Brandt