Basf Se Corporation

Basf Aktiengesellschaft

Karl-Heinz Roβ

Johann-Peter Melder

Martin Ernst

Steffen Oehlenschläger

Frank Kuhnke

Alexander Weck

Manfred Julius

Steffen Maas

Michael Schulz

Stefan Rittinger

Bernd Stein

Wolfgang Reif

Theodor Weber

Frank Haese

Shelue Liang

Frank Poplow

Heinz Rutter

Arnd Bottcher

Werner Reutemann

Horst Grafmans

Rolf Wambsganβ

Heinz Rütter

Roland Deeg

Ronald Deeg

A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of &#x2267;99.7% by weight.

Method for the production of N,N-dimethylacetamide (DMAC)

The present invention relates to a process for the industrial preparation of a diamine starting from a corresponding alkenyl nitrile comprising at least one C&#x2014;C double bond, which comprises the steps The invention further relates to an apparatus for preparing these diamines and the use of the apparatuses. A preferred diamine is 3-dimethylaminopropylamine (DMAPA).

Process for the synthesis of DMAPA

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

Process for the continuous preparation of an amine by reaction of a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of ammonia, primary and secondary amines at a temperature in the range from 60 to 300&#xb0; C. in the presence of a copper-containing catalyst, wherein the catalytically active composition of the catalyst prior to reduction with hydrogen comprises

Method for the continuous production of an amine

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Grünstadt, Germany

Karl-Heinz Roβ