Basf Aktiengesellschaft

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Basfaktiengesellschaft

Basf Aktiengellschaft

Basf Aktiengesellschaft Ludwigshafen

Rolf Hartmuth Fischer

Rolf Pinkos

Werner Schnurr

Hans-Martin Weitz

Franz Merger

Hermann Luyken

Guido Voit

Peter Bassler

Wolfgang Harder

Alwin Rehfinger

Hans-Juergen Weyer

Christoph Sigwart

Martin Merger

Uwe Vagt

Johann-Peter Melder

Andreas Ansmann

Wolfgang Hoelderich

Frank Stein

Norbert Goetz

Rainer Becker

Klemens Flick

Frank Ohlbach

Thomas Kuekenhoehner

Claus-Ulrich Priester

Klaus Ebel

Herbert Mueller

Shelue Liang

Tom Witzel

Karsten Eller

Eberhard Fuchs

Franz J Broecker

Joachim Paust

Rudolf Kummer

Heinz-Walter Schneider

Harald Rust

Joachim Wulff-Doring

Juergen Frank

Michael Hesse

Boris Breitscheidel

Wolf D Mross

Roman Dostalek

Manfred Sauerwald

Gerd Kaibel

Hardo Siegel

Werner Bertleff

Claus Hechler

Peter Schwab

Josef Ritz

Eugen Gehrer

Gerd Heilen

Wolfgang Richter

Franz Josef Brocker

Joaquim Henrique Teles

Ulrich Mueller

Rocco Paciello

Toni Dockner

Norbert Rieber

Martin Fischer

Dieter Lenke

Matthias Irgang

Michael Schulz

Hans Rupert Merkle

Arthur Hohn

Wolfgang Spiegler

Ulrich M&uuml;ller

Arthur H&ouml;hn

Ralf-Thomas Rahn

Karl Gerhard Baur

Bernhard Schulz

Thomas Narbeshuber

Herbert Vogel

Jochem Henkelmann

Hans Peter Rath

Wolfgang Rohr

Eckhard Stroefer

Werner Hoffmann

Ulrich E Muller

Matthias Schwarzmann

Hugo Fuchs

Leopold Hupfer

Stephan Andreas Schunk

Ulrich Steinbrenner

Thomas Krug

Klaus Halbritter

Laszlo Marosi

Gerald Neubauer

Heinrich Aichinger

Detlef Kratz

Peter Stops

Lothar Franz

Frank-Friedrich Pape

Horst Neuhauser

Manfred Eggersdorfer

Walter Seufert

Michael Roeper

Wolfgang Franzischka

Wolfgang Reiss

Axel Paul

Joachim Wulff-Döring

Heinz Eckhardt

A material useful as catalyst for the hydrogenation of alpha, omega-dinitriles comprises

Hydrogenation catalyst

In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5 and, if appropriate, at least one further metal selected from among Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to the activated carbon of from 0 to 0.25, and the activated carbon has been nonoxidatively pretreated It is also possible to prepare ethers and lactones if the hydrogen pressure is not more than 25 bar. In this case, the activated carbon in the catalyst may also have been nonoxidatively pretreated.

Method for catalytic hydrogenation on rhenium-containing active carbon carrier catalysts

A material useful as catalyst for the hydrogenation of alpha, omega-dinitriles comprises (a) iron or a compound based on iron or mixtures thereof, (b) from 0.001 to 0.3% by weight based on (a) of a promoter based on 2, 3, 4 or 5 elements selected from the group consisting of aluminum, silicon, zirconium, titanium and vanadium, (c) from 0 to 0.3% by weight based on (a) of a compound based on an alkali and/or alkaline earth metal, and also (d) from 0.001 to 1% by weight based on (a) of manganese.

Passivated iron useful as catalytically active component after activation is activated by hydrogen at elevated temperature and elevated pressure in the presence of a nitrile.

Method for activating passivated iron

Process for producing caprolactam

In a process for preparing GBL by reaction of 1,4 butanediol over a copper catalyst, use is made of a 1,4 butanediol-containing reaction mixture which comprises further alcohols other than 1,4-butanediol and water.

Method for producing gamma-butyrolactone

Method for simultaneous preparation of 6-aminocapronitrile and hexamethylene diamine

A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 50 mol % and an average molecular weight M of 280-10000 dalton by the cationic polymerization in the liquid phase of isobutene or hydrocarbon mixtures comprising isobutene comprises polymerizing at from &minus;30&deg; C. to &plus;40&deg; C. in the presence of a heterogeneous polymerisation catalyst comprising one or more oxides of the elements of transition groups V and VI of the Periodic Table of the Elements or in the presence of a heterogeneous polymerization catalyst comprising one or more oxidic compounds of one or more elements of transition groups V and VI of the Periodic Table of the Elements supported on a non-zeolitic oxidic support material which is not an oxygen-containing zirconium compound, the catalyst not containing a technically effective amount of halogen.

Method for producing halogen-free reactive polyisobutene

In a process for preparing 1,4-butanediol, tetrahydrofuran and &ggr;-butyrolactone by oxidation of butane to give a product stream comprising maleic anhydride, absorption of maleic anhydride from the product stream using a high-boiling alcohol to give a liquid absorption product comprising monoesters and diesters of maleic acid and also high-boiling alcohol, after-esterification of the liquid absorption product and subsequent hydrogenation of the after-esterified product in the liquid phase, the high-boiling alcohol is a polyhydric alcohol having a boiling point at atmospheric pressure of above 233&deg; C. and the after-esterified product has an acid number of less than 30 mg KOH/g and a water content of less than 1% by weight.

Method for producing mixtures of 1,4-butanediol, tetrahydrofuran and &ggr;-butyrolactone

Method of producing cyclic, &agr;, &bgr;-unsaturated ketones

Method for producing cyclopentanone

A process for the preparation of 1,6-hexanediol and 6-hydroxycaproic acid or esters thereof by catalytic hydrogenation of adipic acid, adipic acid monoesters or adipic acid diesters or streams of starting material which contain adipic acid or esters thereof as essential constituents, in which the bottom product obtained in the distillation of the hydrogenation product, following removal of the hexanediol and hydroxycaproic acid or esters thereof, and essentially comprises oligomeric esters of 6-hydroxycaproic acid, is recycled to the hydrogenation, and the resulting mixture of starting material and recycle stream is reacted at from 100 to 300&deg;C., at from 10 to 300 bar in the liquid phase and at a molar ratio of carboxyl groups to be hydrogenated to hydrogen in the reactor of from 1:5 to 1:100 on hydrogenation catalysts is described.

Method for producing 1,6-hexanediol and 6-hydroxycaproic acid or their esters

Method for producing 1,6-hexanediol

A process for the separation by distillation of a mixture of 1,4-butanediol and at least one 4-hydroxybutyraldehyde, its cyclic hemiacetal and its cyclic full acetals with at least one further alcohol by carrying out the distillation in the presence of an alkaline compound. The mixture to be separated preferably contains a cyclic full acetal of 4-hydroxybutyraldehyde with a further alcohol which has a lower boiling point than butanediol and also the further alcohol in free form. The process is particularly suitable for the separation by distillation of mixtures formed in the hydrogenation of maleic acid derivatives.

Method for distilling mixtures containing butanediol

Preparation of halogen-free, reactive polyisobutene

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Heidelberg, Germany

Rolf Hartmuth Fischer