Evonik Roehm Gmbh

Evonik Rohmax Additives Gmbh

Guenther Graeff

Joachim Knebel

Bardo Schmitt

Klaus Schimossek

Thorben Schuetz

Alexander Dardin

Michael Neusius

Matthias Fischer

Stephan Massoth

Uwe Boehmke

Detlef Bloos

Thomas Ohl

Volker Stephan

Process for preparing bicyclic or tricyclic (meth)acrylates by reacting (meth)acrylic acid with a bicyclic or tricyclic hydrocarbon which contains at least one double bond using montmorillonite as catalyst.

Method for producing bicyclic or tricyclic (meth)acrylates

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 process for purifying (meth)acrylates.

Method of purifying (meth) acrylates

Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where Ris H or CHand Ris an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.

Process for the preparation of (meth)acrylates of tetra- or polyhydric alcohols

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Alsbach-Haehnlein, Germany

Guenther Graeff