Basf Aktiengesellschaft

Basf Se Corporation

Theodor Weber

Jochem Henkelmann

Armin Stamm

Johann-Peter Melder

Manfred Julius

Thomas Krug

Heinz-Josef Kneuper

Marco Bosch

Roderich Röttger

Ralph Busch

Bernd Stein

Wolfgang Koernig

Hans-J&uuml;rgen Weyer

Werner Reutemann

Winfried M&uuml;ller

Franz Merger

Stefan Rittinger

Heinz Auer

Karl-Heinz Ross

Jan Kurt Eberhardt

Gerhard Jeschek

Frank Poplow

Manfred Heilig

Otto Hertel

Peter Hettinger

Hans-Jurgen Weyer

Stephan Scholl

Thorsten Rohde

Guenter Boettger

Karl-Heinz Roβ

Dieter Wolf

Hans-Peter Schildberg

Walter Klink

Peter Dransfeld

Rolf Wambsganβ

Siegfried Kruger

Eberhard Bender

Karl-Heínz Roβ

Fritz Rateike

Jan Eberhardt

Rolf Wambsganss

In the continuous process for preparing alkylamines by reacting C-alkanols with ammonia in the gas phase in the presence of a shape-selective fixed-bed catalyst in a cooled reactor, the shape-selective fixed-bed catalyst is present in a single contiguous fixed bed in the reactor and tubes through which coolants are passed run within the fixed bed to regulate the temperature of the fixed bed.

Continuous methods and reacator used for the production of alkylamines

Shaped body comprising an aluminosilicate and aluminum oxide, wherein the shaped body has a molar Al/Si ratio in the range from 10 to 30 and an at least bimodal pore distribution for pores having a diameter of greater than 1 nm, with the volume of the pores of the shaped body having a diameter of greater than 10 nm corresponding to at least 40% of the total pore volume of the shaped body, process for producing it and process for the continuous preparation of methylamines by reaction of methanol and/or dimethyl ether with ammonia in the presence of a heterogeneous catalyst, wherein the abovementioned shaped bodies are used as catalyst.

Shaped body comprising an aluminosilicate and aluminium oxide and process for the continuous preparation of methylamines

Continuous preparation of alkylamines

The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (), superheated to produce a feed gas stream and subsequently fed into a reactor (), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers () or at any desired position in a heat exchanger (). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360&#xb0; C. to 370&#xb0; C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve () in order to vary the pressure and thus the condensation temperature.

Method for controlling the reactor admission temperature during the production of methylamine

The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream () which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column (), the remaining components of the product stream obtained as bottoms () are fed to a second column (). Trimethylamine () is separated off in the second column () by extractive distillation with introduction of water. The further of the product stream obtained as bottoms () from the second column () are fed to a third column (), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column (). To avoid corrosion alkali metal hydroxide is added to the second or third column ().

Method for avoiding corrosion

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 process for the preparation of tetrasubstituted ureas by reaction of the corresponding amines with phosgene in the presence of an aqueous inorganic base at a temperature in the range from 0 to 150&#xb0; C., which comprises:

Method for the continuous production of tetra-substituted ureas

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

Method for purifying acid chlorides

Method for producing chlorocarboxylic acid chlorides

The present invention relates to a process for preparing alkyl, alkenyl and alkynyl chlorides from alcohols by reaction with a chlorinating agent in the presence of a catalyst, wherein the catalyst is a urea compound.

Method of producing alkyl chloride, alkenyl chloride and alkinyl chloride

Method for producing thiochloroformates

Neopentyl glycol hydroxypivalate (NGH) is isolated from a mixture containing NGH, lower- and higher-boiling products and inorganic salts and purified in a two-stage process, wherein

Isolation of neopentyl glycol hydroxypivalate (NGH)

A process for the preparation of pourable choline chloride/silica powders by mixing silica with choline chloride and, where appropriate, drying this mixture, wherein spray-dried or fluidized bed-dried silica which has a particle size of from 30 to 250 .mu.m is mixed with an aqueous choline chloride solution which contains from 70 to 80% by weight, based on the solution, of choline chloride and is at from 40.degree. to 80.degree. C., thereafter from 0.05 to 0.4% by weight, based on the mixture, of magnesium stearate or calcium stearate is added and, if appropriate, the resulting mixture is dried.

Preparation of pourable choline chloride/silica powders

Neopentyl glycol hydroxypivalate is isolated from a reaction mixture obtained from a Tishchenko reaction of hydroxypivalaldehyde in the presence of calcium hydroxide, barium hydroxide or strontium hydroxide, by adding acid, removing the salts formed by adjusting the water content in the reaction mixture to 20-60% and extracting the salts at above 50.degree. C. and working up the residual mixture by distillation.

Isolation of neopentyl glycol hydroxypivalate

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Ludwigshafen, Germany

Theodor Weber