Evonik Roehm Gmbh

Evonik Rohm Gmbh

Enzymicals Ag

Evonik Degussa Gmbh

Harald Trauthwein

Joachim Knebel

Uwe Bornscheuer

Bardo Schmitt

Thorben Schütz

Guido Protzmann

Thorben Schuetz

Thomas Kehr

Gerhard Koelbl

Guenther Lauster

Oliver May

Klaus Gottmann

Christian Maul

Renate Schulze

Gerhard Kölbl

Guenter Westhaeuser

Harald Groeger

Kai Doderer

Ingo Sander

Dominique Böttcher

Dieter Bathen

Anke Hummel

Elke Brüsehaber

Reinhold Martin

Uwe T Bornscheuer

Patrick Lorenz

Günter Westhäuser

Günter Lauster

Günther Lauster

The present invention relates to a process for preparing ethylene glycol dimethacrylate, which comprises transesterification of ethylene glycol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising lithium amide (LiNH) and lithium chloride (LiCl) is used as catalyst. The process of the invention makes it possible to prepare ethylene glycol dimethacrylate particularly inexpensively and in a very high purity.

Method for producing ethylene glycol dimethacrylate

The invention relates to novel mutants of &#x3b3;PLE, to vehicles containing the same and to their use in the production of enantiomer-enriched alcohols, carboxylic acids and esters.

Isoforms of pig liver esterase

The present invention relates to a process for preparing allyl methacrylate, comprising the reaction of allyl alcohol with an ester of methacrylic acid, wherein the reaction is catalyzed by zirconium acetylacetonate. The process according to the invention enables particularly favorable preparation of allyl methacrylate with a very high purity.

Method for synthesizing allyl methacrylate

The present invention relates to a process for preparing (meth)acrylates, which comprises the transesterification of an alcohol with a low-boiling ester of (meth)acrylic acid in the presence of catalysts, with the alcohol liberated from the low-boiling ester of (meth)acrylic acid being separated off by distillation, characterized in that the molar ratio of low-boiling ester of (meth)acrylic acid to starting alcohol present in the reaction mixture is increased during the reaction by addition of low-boiling ester of (meth)acrylic acid. The process of the invention makes a particularly inexpensive preparation of (meth)acrylates having a very high purity possible.

Method for producing (meth)acrylates

The present invention relates to a process for preparing butanediol dimethacrylates, which comprises the transesterification of butanediol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising at least one lithium compound and at least one calcium compound is used as catalyst, at least one of the compounds of lithium and/or of calcium is an oxide, a hydroxide, an alkoxide having from 1 to 4 carbon atoms or a carboxylate having from 1 to 4 carbon atoms and at least part of the reaction is carried out in the presence of an effective amount of water. The process of the invention makes a particularly inexpensive preparation of butanediol dimethacrylates having a very high purity possible.

Method for producing butanediol dimethacrylates

Growing community of inventors

Buerstadt, Germany

Harald Trauthwein