Rohmax Additives Gmbh

Evonik Rohmax Additives Gmbh

Detlef Bloos

Alexander Dardin

Stephan Massoth

Markus Scherer

Klaus Schimossek

Michael Neusius

Matthias Fischer

Guenther Graeff

Uwe Boehmke

Francois Acker

Jean-Marc Beiner

Alain Roos

Valerie Dittgen

Bernd Amrhein

Volker Stephan

François Acker

Valérie Dittgen

The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.

Process for preparing carboxylic acid derivatives

The invention relates to a method for radical polymerization of one or several ethylenically unsaturated compounds, characterized in that it consists in providing at least 80.8 percent by weight ethylenically unsaturated compounds in relation to the total weight of the ethylenically unsaturated compounds, adding at least one polymerization initiator for radical polymerization in at least two steps, wherein more polymerization initiator is added in the second step than in the first.

Method for free-radical polymerization of ethylenically unsaturated compounds

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Eberbach, Germany

Detlef Bloos