Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Bayer Cropscience Ag

Evonik Operations Gmbh

Volker Brehme

Manfred Neumann

Daniel Dembkowski

Rolf Schneider

Matthias Seiler

Michael Keup

Clemens Osterholt

Günther Köhler

Stefanie Rinker

Jörn Rolker

Daniel Witthaut

Jorn Rolker

Christian Funke

Wahed Ahmed Moradi

Albert Schnatterer

Dirk Roettger

Frank Bauer

Benjamin Willy

Taraneh Farida

Udo Knippenberg

Christoph Schwarz

Johannes Ruwwe

Muhammad Irfan

Jochen Niemeyer

Thomas Kübelbäck

Reiner Rosellen

Kai-Martin Krüger

Johanna Elisabeth Bauer

Franz Rudolf Bauer

Elke Fiebig-Bauer

Mirko Michel

Kai-Martin Krueger

Dirk Röttger

In a method of absorbing COfrom a gas mixture the use of an absorption medium comprising water and at least one amine of formula (I) 

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The present invention relates to a multi-stage method for preparing alkali metal salts of specific 4-hydroxy-2-oxo-2,5-dihydrofuran-3-carboxylic esters of the formula (I), in which M and Rare as defined in the description,which proceeds from malonic ester and does not require isolation of intermediates.

Multistage process for preparing alkali metal salts of specific 4-hydroxy-2-oxo-2,5-dihydrofuran-3-carboxylic esters

COis absorbed from a gas mixture by contacting the gas mixture with an absorption medium which comprises at least water as solvent and at least one amine of formula (I) where Ris an aliphatic radical, having 2 to 6 carbon atoms and at least one amino group, and Ris hydrogen, a Calkyl radical or a radical R.

Amine-containing absorption medium, process and apparatus for absorption of acidic gases from gas mixtures

The invention relates to a process for preparing substituted or unsubstituted 1,7-diolefins by hydrodimerizing non-cyclic olefins having at least two conjugated double bonds in the presence of a reducing agent and of a catalyst, wherein the catalyst used is a metal-carbene complex.

Method for producing dienes by hydrodimerization

4-amino-2,2,6,6-tetramethylpiperidine is prepared by reacting 2,2,6,6-tetramethylpiperidine-4-one with ammonia and hydrogen in the presence of nickel and/or cobalt catalyst and water. The main reaction is carried out at a pressure of at most 50 bar and a temperature of at most 120&#xb0; C. up to a conversion of the 2,2,6,6-tetramethylpiperidine-4-one of at least 80%. Then, an after-reaction takes place at a higher temperature and at a higher pressure compared to the pressure and temperature of the main reaction.

Process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidine

The invention relates to a process for preparing an alcoholic solution of an alkali metal alkoxide from alkali metal hydroxide and alcohol in a reaction column, the alcohol and the alkali metal hydroxide being conducted in countercurrent, which is characterized in that a reflux ratio of at least 0.05 is established in the reaction column.

Process for preparing alkali metal alkoxides

A process for preparing diols or triols made up of

Process for preparing alkanediols and alkanetriols having a vicinal diol group

A process for isolating purified 2-methoxypropene from a mixture which comprises 2,2-dimethoxypropane, 2-methoxypropene, methanol, acetone, and optionally other carbonyl group-containing compounds, which process involves subjecting the mixture to distillation, adding 2-aminoethanol and at least one base as assistants in the distillation, and isolating purified 2-methoxypropene.

Process for isolating highly pure 2-methoxypropene

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Nottuln, Germany

Volker Brehme