Basf Aktiengesellschaft

Basf Se Corporation

Heinz-Josef Kneuper

Rocco Paciello

Rainer Becker

Armin Stamm

Andreas Henne

Jochem Henkelmann

Karsten Eller

Theodor Weber

Frank-Friedrich Pape

Horst Neuhauser

Lothar Karrer

Michael Roeper

Bernhard Geissler

Ernst Langguth

Michael Hullmann

Ralph Busch

Wolfgang Friedrich

Winfried M&uuml;ller

Johann-Peter Melder

Franz Merger

Wolfgang Harder

Bernd Wolf

Tom Witzel

Norbert G&ouml;tz

Dieter Baumann

Stefan Rittinger

Norbert Götz

Roland G&ouml;tz

Eugen Gehrer

Karl-Heinz Ross

Claudius Kormann

Knut Oppenl&auml;nder

Edgar Zeller

Michael R&ouml;per

Bernhard Schlarb

Juergen Schossig

Manfred Heilig

Peter Weidlich

Alfred Thome

Wolfgang G&uuml;nther

Lucien Thil

Hans-Jurgen Weyer

Michael Nilles

Hartmann F Leube

Rolf Lebkucher

Peter M Lorz

Ulrich Kohler

Hans-Peter Schildberg

Maik Aron

Rolf Lebk&uuml;cher

Michael Drögemüller

Gerhard Bertlein

Bernd Fiege

Helmut Gümbel

Jan-Martin Löning

Stephanie Mollner

Jan-Martin Loening

Peter Dransfeld

Bernhard Giessler

Frank-Michael Korgitzsch

Joerg Torsten Nickel

Jörg Torsten Nickel

Roland GÖTZ

Harald Joost

Thomas-Michael Scholbrock

Bernd Menning

Martina Holzbecher

A process for preparing nitric acid by: catalytically oxidizing ammonia, to obtain a gas mixture containing NO and O; cooling and condensing the gas mixture, thereby further oxidizing NO with O, to obtain a gas stream containing NO/NOand an aqueous solution containing nitric acid; and countercurrently absorbing the NO/NOfrom the gas stream in an absorber with process water (HO), to obtain nitric acid and an NO-containing absorber offgas, wherein the water content of the nitric acid is regulated to a concentration in the range from 50 to 77.8% by weight and the NOcontent of the absorber offgas to a concentration in the range from 20 to 500 ppm, by continuously measuring the water content of the process air supplied to the catalytic gas phase oxidation and, as a function of this, adjusting the amount of process water (Q-HO) fed to the absorber.

Process for preparing nitric acid with a concentration in the range from 50 to 77.8% by weight

A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from &#x2212;50&#xb0; C. (223 K) to 200&#xb0; C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.

Method for the intrinsically safe handling of 3-chloropropyne

The invention relates to a method for producing the tautomeric form (I) of 2,4,6-trianilino-p-(carbo-2'-ethylhexyl-1&#x2032;-oxy)-1,3,5-triazine by the crystallization of a tautoner mixture in the presence of one or more solvents selected from the group consisting of aliphatic alcohol having 2 8 C-atoms made of aliphatic alcohol, aliphatic carboxylic acid alkyl esters having a total of between 3&#x2013;10 C-atoms, aromatic carboxylic acid alkyl esters having a total of between 8&#x2013;12 C-atoms, aliphatic carboxylic acid esters having a total of between 3 9 C-atoms, carboxylic acid nitriles having a total of between 2&#x2013;8 C-atoms, dialkylketones having a total of between 3&#x2013;6 C-atoms and aliphatic sulphones having a total of between 3&#x2013;6 C-atoms. The solvent or solvent mixture can additionally contain up to 30 wt % of a hydrocarbon (I) acts as a light protecting agent in cosmetic preparations.

Method for producing the tautomeric form of (1) of 2,4,6-trianilino-p-(carbo-1'-ethylhexyl-1&#x2032;oxyl)-1, 3, 5-triazine

Process for making &ggr;-alkoxyamines

The invention relates to a method for producing acid chlorides by converting carboxylic acids with carbon oxychlorides or thionyl chloride in the presence of a catalyst adduct of an N,N-disubstituted formamide of general formula (I) and carbon oxychloride or thionyl chloride. In the formula, R and R , independently from one another, mean C - to C -alkyl or R and R together mean a C - or C -alkylene chain. According to the inventive method, hydrogen chloride is added during and/or after the conversion.

Method for producing acid chlorides

The invention relates to a method for producing o-choromethyl benzenecarbonyl chlorides of formula (I), wherein R -R can be the same or different and stand for hydrogen, C -C -alkyl, halogen or trifluoromnethyl, by converting benzocondensed lactones of formula (II), wherein R -R have the aforementioned meaning, with gaseous or liquid phosgene and the dimers or trimers thereof. The inventive method is characterized in that the conversion is carried out in the presence of catalytical amounts of a Lewis acid and catalytical amounts of a phosgenation catalyst

Method for producing o-chloromethyl benzenecarbonyl chlorides

Method for purifying acid chlorides

Method for producing monoisocyanates and oligoisocyanates

A process for the preparation of aldehydes or aldehydes and alcohols by hydroformylation of olefins containing more than 3 carbon atoms, comprising a hydroformylation stage, in which the olefin is hydroformylated under a pressure of form 50 to 1000 bar and at a temperature of from 50&deg; to 180&deg; C. by means of a rhodium catalyst dissolved in a homogenous reaction medium and a catalyst recovery stage comprising extraction of the rhodium catalyst with an aqueous solution of chelating agent, isolation of alcohols and/or aldehyde from the extracted hydroformylation product steam, precarbonylation of the aqueous rhodium-containing extract in the presence of carbon monoxide, synthesis gas as, or a gas mixture containing carbon monoxide under a pressure of from 50 to 1000 bar and at a temperature of from 50&deg; to 180&deg; C., separation of the effluent of the precarbonylation stage into an organic phase containing the major portion of the rhodium and an aqueous phase containing the chelating agent and recycling of the organic phase to the hydroformylation stage, where the rhodium catalyst is extracted from the effluent of the hydroformylation stage using an aqueous solution of a sulfonic acid group-free, water-soluble polymer capable of chelating rhodium.

Method of preparing aldehydes by hydroformylation with a rhodium catalyst and recovery of the rhodium catalyst by extraction

In a process for preparing a bicyclic amidine by reacting a lactone and a diamine with elimination of water, water formed by elimination is removed from the reaction mixture during the reaction. A diazabicycloalkene, a process for its preparation and its use are also described.

Preparation of bicyclic amidines and diazacycloalkenes

Halides are removed from halide-containing nitrile mixtures by

Removal of halides from halide-containing nitrile mixtures

In the process for preparing N-ethyldiisopropylamine by reacting acetaldehyde with diisopropylamine and hydrogen at elevated temperature and under pressure in the presence of a hydrogenation catalyst, the catalyst comprises an oxidic support material selected from the group consisting of zirconium dioxide, titanium dioxide, aluminum oxide, silicon dioxide, zinc oxide, magnesium oxide, cerium dioxide, clays and zeolites or mixtures thereof.

Preparation of N-ethyldiisopropylamine

Process for producing aldehydes by hydroformylation of olefins

Fuel or lubricant compositions containing secondary polyisobutene amines

Polymers containing ethylenically unsaturated double bonds are hydroformylated by reacting aqueous dispersions of the polymers with hydrogen and carbon monoxide in the presence of suitable hydroformylation catalysts. Also provided are the polymer dispersions obtainable by this process and the hydroformylated polymers themselves.

Hydroformylation of ethylenically unsaturated polymers in aqueous

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Mannheim, Germany

Heinz-Josef Kneuper