Basf Aktiengesellschaft

Basf Se Corporation

Basfaktiengesellschaft

Matthias Frauenkron

Bernd Stein

Ortmund Lang

Johann-Peter Melder

Marco Bosch

Ulrich Müller

Bernd Rumpf

Anton Meier

Thomas Manderbach

Frank Funke

Thomas Krug

Dirk Funhoff

Markus Siegert

Holger Evers

Roderich Röttger

Jan Nouwen

Ellen Dahlhoff

Wolfgang Harder

Thomas Heidemann

Ulrich Steinbrenner

Hansgeorg Ernst

Martin Ernst

Christof Wilhelm Wigbers

Andreas Keller

Till Gerlach

Wolfgang Reif

Laszlo Szarvas

Gabriele Iffland

Christian Miller

Otto Hofstadt

Hans Hammer

Gunther Van Cauwenberge

Milan Kostur

Walter Himmel

Jürgen Ciprian

Giovanni D'Andola

Falk Simon

Michael Jödecke

Peter Raatz

Ralf B&ouml;hling

Philip Buskens

Stephan Maurer

Werner Klockemann

Guenther Ruider

Jörg Unger

Helmut Berrsche

Erich Frauendorfer

Till Gerlack

The present invention relates to a process for preparing 1-adamantyltrimethylammonium hydroxide, by A) reacting 1-adamantyldimethylamine with dimethyl sulfate to give 1-adamantyltrimethylammonium sulfate; and B) subjecting the 1-adamantyltrimethylammonium sulfate obtained in A) to anion exchange with an ion exchanger loaded with OH ions.

Method for producing 1-adamantyl trimethylammonium hydroxide

Zeolite material of the pentasil type has an alkali metal and alkaline earth metal content of not more than 100 ppm and a molar ratio of Si to Al of from 250 to 1500, at least 90% of the primary particles of the zeolite material being spherical and 95% by weight of the spherical primary particles having a diameter of less than or equal to 1 &#x3bc;m.

Pentasil-structure zeolithic material the production and use thereof

Pentasil-structuer zeolithic material the production and use thereof

Process for preparing a solution of pure triethylenediamine (TEDA), in which TEDA is vaporized, the gaseous TEDA is passed into a liquid solvent 1 (quench) and the TEDA is crystallized from the resulting solution and separated off (solid-liquid separation), wherein the crystalline TEDA obtained is dissolved in a solvent 2 and a stripping gas is passed through the resulting solution (stripping).

Method for producing a solution of pure triethylenediamine (TEDA)

An increase in the cutting hardness of a shaped body comprising a crystalline aluminosilicate is achieved by treating the shaped body with a gas comprising water vapor at from 100 to 600&#xb0; C. and an absolute pressure of from 0.1 to 10 bar for a period of at least 20 hours, and this shaped body having an increased cutting hardness can be used in processes for chemical synthesis, in particular in a process for preparing triethylenediamine (TEDA) by reaction of ethylenediamine (EDA) and/or piperazine (PIP).

Method for preparing triethylenediamine (TEDA)

Preparation of ethyleneamines by reacting monoethanolamine (MEOA) with ammonia in the presence of a catalyst in a reactor (1) and separating the resulting reaction product, where ethylenediamine (EDA) obtained in the separation is reacted in a separate reactor (2) in the presence of a catalyst to give diethylenetriamine (DETA), and the resulting reaction product is passed to the separation of the reaction product resulting from reactor 1.

Method for producing ethyleneamines

Process for producing a shaped body comprising a microporous material and at least one silicon-containing binder, which comprises the steps

Shaped body containing a microporous material and at least one silicon-containing binder, method for the production thereof and its use as a catalyst, particularly in a method for producing triethylenediamine (TEDA).

Process for the preparation of ethylenamines, in particular diethylenetriamine (DETA), by continuous reaction of ethylenediamine (EDA) in the presence of a heterogeneous catalyst, where the reaction is carried out in a reaction column.

Method for producing ethylene-amines

In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant which is immiscible or only slightly miscible with the solvent of the mother liquor and in which TEDA is readily soluble, and the TEDA-depleted mother liquor obtained after extraction and/or the TEDA-enriched extractant which has been used for the extraction are/is returned to the process.

Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine

Process for separating triethanolamine continuously by distillation from a mixture of monoethanolamine, diethanolamine and triethanolamine together with ethanolamine ethers and water obtained by reaction of ammonia with ethylene oxide in the liquid phase under superatmospheric pressure and at elevated temperature, in which the mixture is distilled in two stages. The low-boiling fraction and the high-boiling fraction are taken off and discharged in the first stage and the intermediate-boiling fraction comprising &#x3e;99.4% by weight of triethanolamine and &#x3c;0.2% by weight of diethanolamine is distilled in the second stage. The distillation of the mixture is preferably carried out in a first column and a second column connected to this or in a dividing wall column.

Method for separating triethanolamin from a mixture obtainable by ammonia and ethylene oxide reaction

The invention relates to a process for continuously, distillatively removing piperazine from an ethylenediamine-piperazine mixture under pressure at elevated temperature, by discharging the ethylenediamine at the top and the piperazine at the bottom of a distillation column. For the purpose of improving the quality of the piperazine, especially its color and color stability, the piperazine is subjected directly to circulation conveying it through an evaporator unit operated at a temperature of from about 160&#xb0; C. to about 170&#xb0; C. and returning it into the distillation column. After a residence time of from about 30 min to about 60 min in the circulation system, the piperazine is discharged in vapor form from a side draw in the lower section of the distillation column.

Process for distillatively removing piperazine from an ethylenediamine-piperazine mixture

Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.

Process for the preparation of highly pure triethylene diamine

Process for purifying triethylenediamine (TEDA) by disillation, in which the fractionation is carried out in a dividing wall column.

Isolation of high-purity triethylenediamine (TEDA) by distillation

At least one alkanolamine is prepared by reacting ammonia with alkylene oxide in a reaction space in the presence of a catalyst to give monoalkanolamine or dialkanolamine or trialkanolamine or a mixture of two or three of these compounds, the distribution of the various alkanolamines within the product spectrum being controlled by means of the temperature in the reaction space, by a process in which the temperature is established by regulating the temperature profile in the reaction space.

Method for producing alkanolamines

A process for the preparation of triethylenediamine (TEDA) by reaction of ethylenediamine (EDA) in the presence of a zeolite catalyst, wherein the zeolite catalyst contains one or more metals M in oxidation states II, III or IV as oxides. The desired molar ratio of SiOto metal oxide of the zeolite catalyst depends on the oxidation state of the metal M as specified herein. The reaction temperature is from 250 to 500&#xb0; C. TEDA is an important basic chemical and is used, among other things, in the preparation of pharmaceuticals and plastics, in particular as a catalyst in the preparation of polyurethanes.

Process for the preparation of triethylenediamine (TEDA) from ethylenediamine

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Freinsheim, Germany

Matthias Frauenkron