Oxeno Olefinchemie Gmbh

Evonik Oxeno Gmbh

Evonik Degussa Gmbh

Axel Tuchlenski

Alfred Kaizik

Dietrich Maschmeyer

Michael Grass

Wilfried Bueschken

Franz Nierlich

Wilfried Büschken

Dieter Reusch

Kurt-Alfred Gaudschun

Frank Brocksien

Burkhard Reeken

Matthias Beller

Ralf Jackstell

Klaus-Diether Wiese

Dirk Roettger

Andreas Beckmann

Udo Peters

Holger Klein

Michael Sakuth

Dirk Röttger

Silvia Santiago Fernandez

Michael Graβ

Rainer Malzkorn

Andreas Beckman

The invention relates to the preparation of alicyclic carboxylic acids or their derivatives by selective hydrogenation of the corresponding aromatic carboxylic acid (derivatives) in at least two series-connected reactors, at least one reactor being operated in loop operating mode. The catalyst volumes in the method are set in such a manner that the catalyst volume required, based on the conversion rate, is as low as possible.

Method for continuous catalytic hydrogenation

The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefore.

Microporous catalyst and method for hydrogenating aromatic compounds

The present invention relates to the preparation of alicyclic polycarboxylic esters by ring-hydrogenation of the corresponding aromatic polycarboxylic esters on a catalyst which comprises at least one metal from the triad iron, cobalt, nickel, and at least one metal of the IInd, IIIrd, IVth, Vth, and/or VIth transition group of the Periodic Table. An alicyclic carboxylic ester mixture with a proportion above 10 mol % of the trans isomers. The use of the alicyclic polycarboxylic ester mixtures. Mixtures made from plastics and from alicyclic polycarboxylic ester mixtures.

Alicyclic polycarboxylic ester mixtures with a high trans proportion and method for the production thereof

The present invention relates to mixtures of alicyclic polycarboxylic esters with high cis content, to a process for their preparation by ring-hydrogenation of the corresponding aromatic polycarboxylic esters, and also to the use of the mixtures.

Mixture of alicyclic polycarboxylic acid esters having high cis isomer content

The invention relates to a process for preparing full esters of alicyclic polycarboxylic acids from partial esters of aromatic polycarboxylic acids by hydrogenation of the partial ester followed by esterification of this compound.

Method for the production of alicyclic polycarboxylic acid esters from partial esters of aromatic polycarboxylic acids

The invention relates to a process for preparing high-purity isobutene from industrial methyl tert-butyl ether (MTBE) and the economical utilization of the secondary streams.

Method for the production of isobutene from commericial methyl tert-butly ether

A method for the continuous preparation of an alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. An article made of a plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A liquid which incorporates the alicycic carboxylic acid or an ester of the alicyclic carboxylic acid.

Method for preparing alicyclic carboxylic acids and their esters

The invention relates to a process 1-olefins by telomerization of compounds having conjugated double bonds with a telogen in the presence of a noble metal telomerization catalyst, hydrogenation of the telomer and cleavage of the hydrogenated intermediate. Use of the 1-olefin as comonomer.

Method for producing 1-olefins using palladium carbene compounds

The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or esters of these, via ring hydrogenation of the corresponding aromatic polycarboxylic acids or esters of these, and also to catalysts suitable for this purpose.

Catalyst and method for hydrogenating aromatic compounds

The invention relates to a process for preparing tert-butanol (TBA) from isobutene-containing mixtures, in which at least part of the conversion is achieved with the aid of a reactive rectification.

Method for producing tert-butanol by means of reactive rectification

The invention relates to a process for preparing 1-octene by reacting 1,3-butadiene with a telogen of the formula H&#x2014;X&#x2014;Y&#x2014;H, where X is O, N, S or P and Y is C, N or Si and X and Y bear, depending on their valence, further substituents, in the presence of a telomerization catalyst to form a telomer of the formula HC&#x2550;CH&#x2014;CH&#x2014;CH&#x2014;CH&#x2014;CH&#x2550;CH&#x2014;CH&#x2014;X&#x2014;Y&#x2014;H, partially hydrogenating the telomer to form a 1-substituted 2-octene of the formula HC&#x2014;CH&#x2014;CH&#x2014;CH&#x2014;CH&#x2014;CH&#x2550;CH&#x2014;CH&#x2014;X&#x2014;Y&#x2014;H and dissociating the 1-substituted 2-octene to give 1-octene.

Method for producing 1-octene

Alkyl tert-alkyl ethers are cleaved into the corresponding isoolefins and alkanols by a process comprising acid-catalyzed reactive distilling an alkyl tert-alkyl ether fed into the reaction zone of a reactive distillation apparatus as an azeotrope of the alkyl tert-alkyl ether and the corresponding alkanol, wherein the reactive distillation apparatus is configured from bottom to top as a bottom zone, at least one distillation zone and a reaction zone. The process is suitable for the cleavage of primary, secondary and tertiary alkyl tert-alkyl ethers, in particular MTBE.

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Weinheim, Germany

Axel Tuchlenski