Roehm Gmbh

Rohmax Additives Gmbh

Evonik Rohmax Additives Gmbh

Uwe Boehmke

Michael Neusius

Clemens Auschra

Horst Pennewiss

Klaus Schimossek

Alexander Dardin

Matthias Fischer

Stephan Massoth

Guenther Graeff

Detlef Bloos

Volker Stephan

Joachim Vetter

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 copolymer consisting of the following monomer components: a) 48-98 wt. % of compounds of formula (I), b) 2-30 wt. % of one or several oxygen-containing methacrylates of formula (II) and c) 0-30 wt. % of a methacrylate of formula (III) of styrol, the quantities a)-c) totalling 100 wt. %. The inventive copolymer is suitable as a an additive for diesel fuels and biodiesel.

Additive for biodiesel and biofuel oils

Demulsifiers

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Darmstadt, Germany

Uwe Boehmke