Hoechst Aktiengesellschaft

Ruhrchemie Aktiengesellschaft

Celanese Gmbh

Celanese Chemicals Europe Gmbh

Bayer Aktiengesellschaft

Clariant Corporation

Ruhrechemie Aktiengesellschaft

Helmut Bahrmann

Ernst Wiebus

Peter Lappe

Boy Cornils

Thomas Muller

Werner Konkol

Wolfgang Greb

Hanswilhelm Bach

Peter Heymanns

Wolfgang Anton Herrmann

Jurgen Weber

Christian Kohlpaintner

Jurgen Szameitat

Wolfgang Lipps

Wilhelm Gick

Hans-Jerg Kleiner

Rainer Manetsberger

Carl-Dieter Frohning

Helmut Springer

Carl Dieter Frohning

Sandra Bogdanovic

Klaus Bergrath

Bernhard Fell

Michael Riedel

Wilfried Fenske

Dieter Regnat

Hans Bohnen

Steffen Haber

Kurt Schalapski

Gerhard Diekhaus

Georg Dambkes

Carl D Frohning

Robert Eckl

Florian Rampf

Wolfgang Zgorzel-Ski

Jurgen Kulpe

Ludger Bexten

Heinz Kalbfell

Harald Kappesser

Richard Fischer

Ernest Wiebus

Georgios Papadogianakis

Michael Haubs

Willi Kreuder

Matthias Beller

Claus Kniep

Detlef Kampmann

Wolfgang Zgorzelski

Rainer Lukas

Wolfgang Bernhagen

Gregor Deckers

Andreas Dierdorf

Othmar Stelzer

Guido Albanese

Heinz-Dieter Hahn

Wolfgang Hofs

Markus Schulte

Waldemar Kascha

Dieter Frohning

Michael Tepper

Peter Hermanns

W A Herrmann

Harald Dibowski

Volker Heim

Jugen Weber

Franz Peter Schmidtchen

J&uuml;rgen Szameitat

Thomas M&uuml;ller

Hans Bohen

Antonella Hessler

Zhigao Xia

Subba Kanagasabapathy

Thomas M Uller

J Urgen Szameitat

Eberhard Von Mulmann

Wolfgang Herrman

Wolfgana Greb

A process for preparing sulfonated arylphosphines by reaction of arylphosphines with oleum, wherein, after reaction of the arylphosphines with oleum, the sulfonation mixture is firstly diluted with water, an inert gas stream is then passed through the diluted sulfonation mixture until SOis no longer liberated from the diluted sulfonation mixture and the latter is then worked up further in a customary manner and its use.

Process for preparing sulfonated arylphosphines

A process for preparing solutions of sulfonated arylphosphines comprising reacting arylphosphines with oleum, diluting the sulfonation mixture with water, extracting the diluted sulfonation mixture with a solution of a water-insoluble organic solvent, reacting the organic phase with a solution of an inorganic base in water, adjusting the resulting aqueous solutin of sulfonated arylphosphines to a pH of up to 3 by addition of an acid, and passing an inert gas stream through the aqueous solution comprising sulfonated arylphosphines until sulfur is no longer liberated from the aqueous solution of sulfonated arylphosphines.

The invention relates to novel ionic liquids and to the production and use thereof. The novel ionic liquids are salts of sulphonated or carboxylated triesters of phosphorous acid as the anionic component and ammonium ions, which can be substituted with organic radicals, as the cationic component.

Ionic liquids and production and use thereof

The invention relates to a method for producing sulfonated aryl phosphines by reacting aryl phosphines with oleum. After reacting the aryl phosphines with oleum, the sulfonation mixture is firstly diluted with water and an inert gas stream is then fed through the diluted sulfonation mixture until SO is no longer released from the diluted sulfonation mixture. Afterwards, the sulfonation mixture is subsequently processed in a usual manner. The invention also relates to a method for producing solutions of sulfonated aryl phosphines by reacting the aryl phosphines with oleum, diluting the sulfonation mixture with water, extracting the aqueous solution using an organic solution consisting of an amine, and subsequently carrying out a reextraction using an aqueous solution having an inorganic base. According to the invention, the solution containing aqueous sulfonated aryl phosphines is adjusted to a pH value of up to 3 by adding acid, and an inert gas stream is then fed through the aqueous solution until sulfur dioxide is no longer released. The invention additionally relates to an aqueous catalyst solution containing rhodium and an aqueous solution of sulfonated aryl phosphines, treated as defined by the invention, for carrying out the hydroformylation of olefinically unsaturated compounds, and relates to the use thereof for carrying out the same.

Method for producing sulfonated aryl phosphines

Mixtures of isomeric nonanols and decanols are obtained by joint aldol condensation of n-butanal and pentanals, and up to 1% by weight of 3-methylbutanal, hydrogenation of the aldol condensation product to the corresponding saturated alcohols, and separation from the reaction mixture of the components boiling at temperatures lower than those of the nonanols and decanols. The pentanals are mixtures of 60 to 90% by weight of n-pentanal and 10 to 40% by weight of 2-methylbutanal. The alcohol mixture is especially suitable for preparing ester plasticizers.

Isomeric nonanols and decanols, their preparation, phthalic esters obtained therefrom and their use as plasticizers

The invention relates to a method for producing aldehydes by reacting monoolefins, conjugated and non-conjugated polyolefins, cycloolefins, or derivatives of these classes of compounds with carbon monoxide and hydrogen (hydroformylation) in the presence of rhodium or rhodium compounds and a non-aqueous liquid of the formula (Q ) A , wherein Q represents a singly charge ammonium cation that is optionally substituted with organic radicals, and A represents the anion of a sulphonated or carboxylated triester of phosphoric acid.

Method for producing aldehydes

The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170&deg; C. and a pressure of between 1 and 300 bar an olefinically unsaturated C,-C,compound in the presence aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 10 and 70 wt % of a compound of formula (1), R(OCH,CH,),OR,, R standing for hydrogen, a straight-chain or branched C,-C,alkyl group or a C,-C,hydroxyalkyl group, R,standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.

Process for preparing aldehydes in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst

The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170&deg; C. and a pressure of between 1 and 300 bar an olefinically unsaturated C,-C,compound in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 1 and 35 wt % of a compound of formula (1), R(OCH,CH,),OR,, R standing for hydrogen, a straight-chain or branched C,-C,alkyl group or a C,-C,hydroxyalkyl group, R,standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.

Process for preparing aldehydes by hydroformylation

A catalyst comprising rhodium and a compound of the formula (I)

Catalyst and process for the production of aldehydes by hydroformylation of olefinically unsaturated compounds

Guanidinium phosphanes, their production and their use

Tertiary phosphanes containing alkylene glycol groups

A catalyst for preparing aldehydes by hydroformylation of olefins or olefinically unsaturated compounds comprising at least one rhodium compound and a non-aqueous ionic ligand liquid of the formula (Q.sup.+).sub.a A.sup.a-, where Q.sup.+ is a singly charged quaternary ammonium and/or phosphonium cation or the equivalent of a multiply charged ammonium and/or phosphonium cation and A.sup.a- is a sulfonated triarylphosphine.

Catalyst of rhodium and a non-aqueous ligand liquid for preparation of

Nonaqueous ionic ligand liquids of the formula (Q.sup..sym.)a A.sup.a-, where Q.sup..sym. is a singly charged quaternary ammonium and/or phosphonium cation or the equivalent of a multiply charged ammonium and/or phosphonium cation and A.sup.a- is a sulfonated triarylphosphine, a process for preparing them and their use as catalyst constituents.

Nonaqueous ionic ligand liquids, process for preparing them and their

Nitro compound-reducing process

For the preparation of predominantly unbranched higher primary alcohols, olefins from the Fischer-Tropsch synthesis are reacted with hydrogen and carbon monoxide in the presence of water and a catalyst which is rhodium, in metallic form or as a compound, and a water-soluble phosphine. The reaction product obtained is hydrogenated. The water-soluble phosphines employed are compounds whose anion is a phosphine containing at least one sulfonated or carboxylated aromatic radical and whose cation is a quaternary ammonium or phosphonium ion.

Process for the preparation of predominantly unbranched higher primary

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Hamminkeln, Germany

Helmut Bahrmann