Evonik Rohm Gmbh

Evonik Roehm Gmbh

Roehm Gmbh & Co Kg

Benedikt Laux

Christian Maul

Dirk Broell

Volker Schleep

Joachim Knebel

Wolfgang Klesse

Bardo Schmitt

Ingo Sander

Guido Protzmann

Gerhard Koelbl

Thomas Kehr

Andrea Wittkowski

Martina Ebert

Dirk Bröll

Patrick Peter

Claus Zimmer

Hans-Gerhard Stadler

The invention relates to a process for preparing N-alkyl(meth)acrylamides by reacting (meth)acrylic anhydride with corresponding alkylamines.

Process for preparing N-alkyl(meth)acrylamides

Process for purifying unsaturated compounds, and a plant for performing the process. Unsaturated compound obtained by the process.

Method and plant for purifying unsaturated compounds

The present invention relates to a process for purifying monomers, by evaporating at least a portion of the monomers present in a starting composition and then condensing it, which is characterized in that at least a portion of the starting composition is evaporated in a short-path evaporator, the mass flow density of the vapors {dot over (m)} being selected according to the relation (I)  A further aspect of the present invention is a plant for performing the process.

Method and system for purifying monomers

The invention relates to a process for continuously preparing N-alkyl(meth)acrylamides by reacting alkyl(meth)acrylates with high-boiling amines. A catalyst activation and specific workup technique achieve product qualities which have not been achieved to date. In addition, very high space-time yields and overall yields can be achieved.

Method for continuously producing alkylamino(meth)acrylamides

A process for purifying an unsaturated compound, where purification is performed in a plant with evaporators.

The present invention relates to a process for preparing an unsaturated carboxylic acid anhydride by reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of a stabilizer and catalyst that contains a metal salt of an anionic organic compound which has at least one carboxyl group.

Process for manufacturing unsaturated carboxylic acid anhydrides

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Monzernheim, Germany

Benedikt Laux