Oxeno Olefinchemie Gmbh

Evonik Oxeno Gmbh

Evonik Degussa Gmbh

Degussa-huels Aktiengesellschaft

Oxeno Olefinchemie Gmbh & Co. Kg

Evonik Oxenc Gmbh

Klaus-Diether Wiese

Dieter Hess

Wilfried Bueschken

Cornelia Borgmann

Alfred Kaizik

Detlef Selent

Dirk Fridag

Dagmara Ortmann

Guido Protzmann

Ralf Jackstell

Dirk Roettger

Armin Boerner

Holger Klein

Oliver Moeller

Dietrich Maschmeyer

Franz Nierlich

Matthias Beller

Michael Grass

Franz-Felix Kuppinger

Hans-Gerd Lueken

Dirk R&ouml;ttger

Renat Kadyrov

Walter Kaminsky

Markus Priske

Wilfried Büschken

Martin Trocha

Goetz Baumgarten

Burkard Kreidler

Udo Lenz

Paul Olbrich

Dirk Röttger

Silvia Santiago Fernandez

Wilfried B&uuml;schken

Juergen Koch

Armin B&ouml;rner

Christine Kunze

Stefanie Derlin

Patrick Muhlack

Antje Jakob

Reinhard Schmutzler

Robert Franke

Guido Stochniol

Armin Börner

Wilhelm Droste

Bernhard Scholz

Axel Tuchlenski

Uwe Ernst

Kurt-Alfred Gaudschun

Jörg Sauer

Soenke Broecker

Markus Rudek

Detlef Heller

Wilfried Buschken

Frank Hoeper

Hermann-Josef Schulte-Althoff

Hans-Gerd Lüken

Hans-Joachim Drexler

Ion Neda

Walter Tötsch

Oliver Möller

Götz Baumgarten

Juergen Gabriel

Dirk R&ouml;ettger

Walter T&ouml;etsch

Frank Höper

Christoph Patalong

Sönke BRÖCKER

Oliver MÖLLER

Armin Prof Börner

Alfred Kaizig

The present invention relates to a method and a device for controlling the viscosity of reaction solutions in the hydroformylation of olefin-containing mixtures.

Control of the viscosity of reaction solutions in hydroformylation processes

The invention relates to a method for enriching a homogenous catalyst from a process flow comprising said homogenous catalyst as a component, wherein the process flow is conducted over at least one membrane and wherein the membrane wholly or partially comprises a polymer that has planar polymer units connected to one another via a rigid link and wherein the linker is contorted, such that at least one planar polymer unit is connected to at least one second planar polymer unit via the link, in a non-co-planar arrangement. The invention furthermore relates to a method for producing tridecanal.

Method for enriching a homogeneous catalyst from a process flow

A process for preparing a Caldehyde mixture from a hydrocarbon mixture comprising at least one linear butene by terminal hydroformylation under isomerizing conditions, using a catalyst system comprising rhodium, a bisphosphite ligand, and an amine.

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The invention relates to a method for separating 1-butene from C-containing hydrocarbon mixtures, comprising isobutene and 1-butene, by hydroformylation, wherein the catalytic system used is made of one of the transition metals of the group 8 to 10, preferably rhodium, and a bisphosphite ligand of the formula (I), where X is a divalent substituted or unsubstituted bisalkylene or bisarylene group having one or more heteroatom(s), Y is a divalent substituted or unsubstituted bisarylene or bisalkylene group having one or more heteroatom(s), Z is oxygen or NR, and R, R, R, Rare identical or different, substituted or unsubstituted, linked, unlinked or condensed aryl or heteroaryl groups, and Ris hydrogen or a substituted or unsubstituted alkyl or aryl group having one or more heteroatom(s), wherein the bisphosphite ligand of the formula (I) is used in an excess of a molar ratio of 100:1 to 1:1 to the transition metal, and that with a 1-butene conversion of more than 95% less than 5% of the present isobutene is reacted method for separating 1-butene from c-containing hydrocarbon streams by hydroformylation.

Process for separating a dissolved complex catalyst of a metal of group 4, 5, 6, 7, 8, 9 or 10 of the Periodic Table of the Elements and/or any free organophosphorus ligand present from a nonaqueous hydroformylation reaction mixture which contains an aldehyde product and an organic solvent at least one membrane which is more permeable to the hydroformylation product than to the organophosphorus ligand, the separation being carried out under a carbon monoxide partial vapor pressure of more than 200 kPa.

Method for separating organic transition metal complex catalysts

The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group.

Process for preparing polymers from 3-methylbut-1-ene

The present invention relates to the preparation of 3-methylbut-1-ene from a hydrocarbon stream I comprising isobutene by feeding a hydrocarbon stream II which comprises at least 70% by mass of isobutene in relation to the olefins present in the hydrocarbon stream and which has been obtained from hydrocarbon stream I or is identical to it to a process step for hydroformylation in which isobutene is hydroformylated in the presence of a rhodium catalyst, hydrogenating the aldehyde obtained from the hydroformylation of isobutene to the corresponding alcohol and preparing 3-methylbut-1-ene by water elimination from the alcohol.

Process for preparing 3-methylbut-1-ene

The invention relates to a bisphosphite of the formula I where X=a divalent substituted or unsubstituted bisalkylene or bisarylene radical, Y=a divalent substituted or unsubstituted bisarylene or bisalkylene radical, Z=oxygen or NR, and R, R, R, Rare identical or different, substituted or unsubstituted, linked, unlinked or fused aryl or heteroaryl radicals and Ris hydrogen or a substituted or unsubstituted alkyl or aryl radical, a process for preparing it and also the use of this phosphite in catalysis in particular in the catalytic hydroformylation of olefins or organic compounds having C&#x2014;C double bonds.

Bisphosphite ligands for hydroformylation catalyzed by transition metals

The present invention relates to a process for preparing organophosphites, organophosphonites and organophosphinites by condensing phosphorus trihalides or organophosphorus halides with organic compounds bearing hydroxyl groups in the presence of polymeric basic ion exchange resins. The process according to the invention makes possible in a simple manner the preparation of trivalent organophosphorus compounds which may be used, for example, as ligands in rhodium complexes which may be used as a catalyst in hydroformylation.

Method for producing trivalent organophosphorus compounds

The invention relates to a process for reaction of a carbonylatable compound using a metal complex catalyst comprising a metal of transition group VIII and an organophosphorus ligand and in the presence of a stabilizer based on a sterically hindered secondary amine.

Carbonylation method by adding secondary sterically hindered amines

(EN) The invention relates to the use of novel organophosphoric compounds and metal complexes thereof in catalytic reactions, and to the hydroformylation of olefins in the presence of these compounds.

Method for hydroformylating olefins in the presence of organophosphoric compounds

Process for carrying out catalytic multiphase reactions in a tubular reactor, in which at least three reactants are present in three different phases, wherein the process is carried out in at least one tubular reactor, and the catalyst is present in a continuous phase, at least one reactant is present in this continuous phase, and at least two reactants are present dispersed in the continuous phase and the loading factor B of the tubular reactor is equal to or greater than 0.2. In particular, the multiphase reaction is a hydrocarboxylation of at least one olefin to a carboxylic acid.

Preparation of tertiary carboxylic acids

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 present invention relates to a process for preparing 1-olefins from 2-hydroxyalkanes by catalytic elimination of water under nonisomerizing conditions and to a catalyst which is particularly well-suited for this process and formally comprises yttrium oxide (YO), zirconium dioxide (ZrO) and an alkali metal oxide and/or alkaline earth metal oxide.

Catalyst and method for the production of 1-olefins from 2-hydroxylkanes

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Haltern am See, Germany

Klaus-Diether Wiese