Ruhrchemie Aktiengesellschaft

Hoechst Aktiengesellschaft

Celanese Chemicals Europe Gmbh

Oxea Deutschland Gmbh

Celanese Gmbh

Hoeschst Aktiengesellschaft

Ruhrchemie Aktiengesekkschaft

Oxea Corporation

Helmut Springer

Peter Lappe

Jurgen Weber

Wolfgang Bernhagen

Boy Cornils

Helmut Bahrmann

Rainer Lukas

Ernst Wiebus

Peter Heymanns

Wolfgang Lipps

Heinz Kalbfell

Franz Thonnessen

Georg Dambkes

Paolo Bavaj

Heinz Strutz

Wolfgang Payer

Hanswilhelm Bach

Carl Dieter Frohning

Wolfgang Greb

Wilhelm Gick

Claus Kniep

Ludger Bexten

Hans Feichtinger

Volker Falk

Harald Kappesser

Wolfgang Hofs

Dieter Kupies

Roderich Gartner

Norbert Breitkopf

Eike Brundin

Frank Winsberg

Adolf Hack

Rudolf Heumuller

Klaus Schimmer

Eberhard Von Mulmann

Klaus-Dieter Merscher

A catalytic process for preparing aliphatic straight-chain and &#x3b2;-alkyl-branched carboxylic acids of 5 to 13 carbon atoms by catalytic oxidation of the corresponding aldehydes by means of oxygen or oxygen-containing gas mixtures in the liquid phase in the presence of a catalyst system contains alkali metal carboxylates or alkaline earth metal carboxylates or a mixture thereof in an amount, calculated as alkali metal or alkaline earth metal, of 0.5 mmol to 15 mmol per mol of aldehyde used and also metals of groups 4 to 12 of the Periodic Table of the Elements, cerium or lanthanum in amounts of not more than 5 ppm, based on the aldehyde used, or compounds of such metals, with the catalyst system being the reaction product from an aldehyde oxidation reaction.

Catalytic process for preparing aliphatic straight-chain and &#x3b2;-alkyl-branched carboxylic acids

The compound, bicyclo[4.3.0]nonane-3(4),7(8)-dicarboxylic acid and to a process for its preparation, wherein bicyclo[4.3.0]nona-3,7-diene is reacted with synthesis gas in an homogeneous organic phase in the presence of transition metal compounds of Group VIII of the Periodic Table containing complex-bound organophosphorus compounds, and of excess organophosphorus compound, at temperatures of 70 to 160&#xb0; C. and pressures of 5 to 35 MPa, and the 3(4),7(8)-bisformylbicyclo[4.3.0]nonane thus obtained is oxidized, or is first hydrogenated to 3(4),7(8)-dihydroxymethylbicyclo[4.3.0]nonane and the diol thus obtained is reacted in an alkali melt.

Bicyclo[4.3.0]nonane-3(4),7(8)-dicarboxylic acid and a process for its preparation

3(4),7(8)-bis(aminomethyl)bicyclo[4.3.0]nonane and a process for its preparation, wherein bicyclo[4.3.0]nona-3,7-diene is reacted with synthesis gas in a homogeneous organic phase in the presence of transition metal compounds of Group VIII of the Periodic Table containing complex-bound organophosphorus compounds, and excess organophosphorus compound, at temperatures of 70 to 160&#xb0; C. and pressures of 5 to 35 MPa, and the 3(4),7(8)-bisformylbicyclo[4.3.0]nonane thus obtained is reductively aminated.

3(4),7(8)-Bis(aminomethyl)bicyclo[4.3.0]nonane and a process for its preparation

A process for preparing 3(4),8(9)-bis(aminomethyl)tricycle-[5.2.1.0]decane by hydroformylating dicyclopentadiene with subsequent reductive amination wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in a first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (III) compounds in complex-bound form, of group VIII of the Periodic Table to give 8(9)-formyltricyclo[5.2.1.0]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-formyltricyclo[5.2.1.0]dec-3-ene is converted, in a homogeneous organic phase in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.0]decane

Process for preparing TCD-diamine

The present invention relates to a process for preparing aliphatic straight-chain and &#x3b2;-alkyl-branched carboxylic acids by catalytic oxidation of aldehydes by means of oxygen or oxygen-containing gas mixtures. Alkali metal carboxylates or alkaline earth metal carboxylates or a mixture thereof in an amount, calculated as alkali metal or alkaline earth metal, of from 1 mmol each to from 10 mmol each per mole of aldehyde used and also metals or compounds of metals of groups 5 to 11 of the Periodic Table of the Elements in amounts of not more than 5 ppm, based on aldehyde used, are present as catalyst.

Process for preparing aliphatic straight-chain and beta-alkyl-branched carboxylic acids

A process for selectively hydroformylating dicyclopentadiene to 8(9)-formyltricyclo-[5.2.1.0]dec-3-ene in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus(III) compounds in complex-bound form, of group VIII of the Periodic Table of the Elements, wherein the water-soluble organic phosphorus(III) compounds are alkali metal or alkaline earth metal salts of sulfonated arylphosphines and aryldiphosphines.

Process for preparing TCD-monenal

A process for preparing 3(4),8(9)-bisformyltricyclo[5.2.1.0]decane by hydroformylating dicyclopentadiene with subsequent distillation wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in the first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (III) compounds in complex-bound form, of group VIII of the Period Table of the Elements to give 8(9)-bisformyltricyclo[5.2.1.0]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-bisformyltricyclo[5.2.1.0]dec-3-ene is converted, in homogeneous organic phase in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.0]decane.

Process for preparing TCD-dialdehyde

The present invention relates to a process for preparing N-methyldialkyl-amines by reacting secondary dialkylamines with formaldehyde at a temperature of from 100 to 200&#xb0; C., by using from 1.5 to 3 mol of formaldehyde per mole of secondary dialkylamine and degassing the resulting reaction product, removing the aqueous phase and distilling the organic phase.

Process for preparing N-methyldialkylamines from secondary dialkylamines and formaldehyde

A process for preparing 3(4),8(9)-dihydroxymethyltricyclo[5.2.1.0]decane by hydroformylating dicyclopentadiene with subsequent distillation wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in a first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (III) compounds in complex-bound form, of group VIII of the Periodic Table to give 8(9)-formyltricyclo[5.2.1.0]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-formyltricyclo[5.2.1.0]dec-3-ene is converted, in homogeneous organic phase in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.0]decane.

Process for preparing TCD-alcohol DM

The invention relates to a method for the synthesis of aliphatic carboxylic acids by the catalytic oxidation of aldehydes with oxygen, or oxygen-containing gas mixtures. Metals of groups 5 11 of the periodic table of elements, or the compounds thereof are used as catalyst, in amounts of up to 5 ppm, based upon the amount of aldehyde used.

Method for the synthesis of aliphatic carboxylic acids from aldehydes

The invention relates to a method for producing aliphatic carboxylic acids from aldehydes by means of oxidation with oxygen or gases containing oxygen. This novel process is carried out in at least two stages at different temperatures, preferably in the absence of catalysts.

Method for producing aliphatic carboxylic acids from aldehydes

The invention relates to a non-catalysed method for the synthesis of straight-chain aliphatic carboxylic acids by oxidation of straight-chain aldehydes with oxygen-containing gas mixtures. The invention is characterised in that during the novel process of oxidation branched aldehydes are present in the reaction mixture.

Method for the synthesis of straight-chain aliphatic carboxylic acids from aldehydes

The present invention relates to a process for preparing ester plasticizers from ethylene glycol or the dimers, trimers or tetramers of this compound and linear or branched aliphatic monocarboxylic acids having from 3 to 20 carbon atoms. The reaction is carried out in the presence of organic substances having a boiling point of <112&deg; C., in particular cyclohexane, as azeotrope formers (entrainers) for removing the water of reaction.

Process for preparing ester plasticizers

A process for preparing saturated alcohols comprising effecting an aldol condensation of alkyl methyl ketones of 6 to 8 carbon atoms which are branched at the &bgr;-carbon atom with aldehydes of 4 to 15 carbon atoms which are branched at the &agr;-carbon atom to form &agr;,&bgr;-unsaturated ketones and subsequent hydrogenation of the &agr;,&bgr;-unsaturated ketones to obtain alcohols, wherein the aldol condensation is carried out at a temperature of 60 to 130&deg; C. in the presence of a 30-55% strength aqueous solution of an alkali metal hydroxide resulting in very low by-product formation.

Process for preparing saturated alcohols

.alpha.-alkyl aldehydes having 8 to 17 carbon atoms are obtained from terminal olefins containing one less carbon atom. The olefins are first isomerized in the presence of iron carbonyl and then, without separating out the iron compound, hydroformylated in the presence of rhodium as catalyst.

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Dinslaken, Germany

Helmut Springer