Basf Aktiengesellschaft

Basf Se Corporation

Ulrich Koehler

Hardo Siegel

Eckhard Hickmann

Ludwig Schuster

Matthias Irgang

Johann-Peter Melder

Franz Merger

Wolfgang Harder

Tom Witzel

Christian Maletzko

Michael Kroener

Manfred Julius

Guenther Seybold

Claus-Ulrich Priester

Frank-Friedrich Pape

Horst Neuhauser

Frank Haese

Werner Hinz

Helmut Lermer

Ruth Zschiesche

Stefan Adams

Gerhard Koppenhoefer

Thomas-Michael Kahl

Peter Jaeger

Joachim Wulff-Doering

Klaus Vorspohl

Peter Gaa

Hardo Stegel

Processes comprising: providing an aromatic alcohol; and reacting the aromatic alcohol with ammonia at a temperature of 80 to 350&#xb0; C. in the presence of hydrogen and a heterogeneous catalyst to form a crude reaction product comprising a corresponding primary aromatic amine, wherein the heterogeneous catalyst comprises a catalytically active composition which, prior to reduction with hydrogen, comprises 90 to 99.8% by weight of zirconium dioxide (ZrO), 0.1 to 5.0% by weight of an oxygen-comprising compound of palladium, and 0.1 to 5.0% by weight of an oxygen-comprising compound of platinum.

Method for the continuous production of an amine

A process for preparing tertiary amine oxides with a low nitrosamine content by reacting a tertiary amine with an aqueous solution of hydrogen peroxide, which comprises using as starting material tertiary amines whose total content of primary and secondary amines is not more than 0.05% by weight.

Preparation of tertiary amine oxides

The invention relates to highly reactive polyoxyalkylene-polyols prepared by oxyalkylation of an initiator molecule containing, in bonded form, at least 2 reactive hydrogen atoms and at least one tertiary amino group bonded via a spacer bridge, which preferably comprises an alkylene radical having at least 3 carbon atoms, by means of at least one alkylene oxide, preferably ethylene oxide and/or 1,2-propylene oxide, to a process for the preparation of these polyoxyalkylene-polyols, and to their use for the production of compact or cellular, preferably flexible polyisocyanate polyaddition products.

Highly reactive polyoxyalkylene-polyols containing tertiary amino groups

A process for the preparation of 4-substituted imidazoles of the general formula ##STR1## in which R denotes C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, aryl, and C.sub.7 -C.sub.20 aralkyl, wherein

Preparation of 4-substituted imidazoles from

Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R.sup.1 to R.sup.4 are each hydrogen or various radicals.

Polytetrahydrofuran derivatives having terminal aromatic groups

A process for the preparation of a 1,4-alkylenediamine of the general formula I ##STR1## in which the substituents R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1 -C.sub.10 -alkyl, phenyl or benzyl, by reacting a succinic dinitrile of the general formula II ##STR2## in which R.sup.1 and R.sup.2 have the meanings stated, with hydrogen at a temperature of from 30.degree. to 250.degree. C. and a pressure of from 50 to 350 bar in contact with a hydrogenation catalyst, wherein the hydrogenation catalyst used contains cobalt oxide and one or more oxides of the elements iron, nickel, manganese, chromium, molybdenum, tungsten, and phosphorus and one or more oxides of elements in the alkali metal group, alkaline earth metal group, and rare earth group of the Periodic Table, and of scandium, and/or of yttrium.

Preparation of 1,4-alkylenediamines

A process for the preparation of a 2-(3-aminopropyl)-cycloalkylamine of the general formula I ##STR1## in which the subscript n is an integer from 1 to 4, from a 2-(2-cyanoethyl)-cycloalkanone of the general formula II ##STR2## in which the subscript n has the meaning stated, wherein the following stages are carried out in discrete reaction chambers:

Preparation of 2-(3-aminopropyl)-cycloalkylamines

Poly(1,4-butanediol-.omega.,.omega.'-mercaptans) have the general formula

Process for preparing a

A process for the preparation of a 2-pyrrolidinone of the general formula I ##STR1## in which R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1 -C.sub.20 -alkyl, or C.sub.3 -C.sub.8 -cycloalkyl optionally substituted by C.sub.1 -C.sub.4 -alkyl, or phenyl optionally substituted by C.sub.1 -C.sub.4 -alkyl, by reacting a 3-cyanopropionate of the general formula II ##STR2## in which R.sup.1 and R.sup.2 have the meanings stated above and R.sup.3 denotes C.sub.1 -C.sub.8 -alkyl, with hydrogen at elevated temperature and pressure, wherein the reaction is carried out in the presence of ammonia and in contact with a catalyst containing cobalt, manganese, and phosphorus.

Preparation of 2-pyrrolidinones

A process for the preparation of amines of the formula ##STR1## in which R.sup.1 is the radical H.sub.2 N-CH.sub.2 and R.sup.2 is hydrogen, or R.sup.1 and R.sup.2 together form a bridging group --CH.sub.2 --, by reacting 1,3,6-tricyanohexane at elevated temperature and pressure with hydrogen in contact with a catalyst containing, in addition to cobalt oxide, and oxide of an alkali metal, an oxide of an alkaline earth metal, an oxide of a rare earth or an oxide of scandium or yttrium.

Process for the preparation of amines

Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R.sup.1 and R.sup.4 are each hydrogen or various radicals.

A process for the preparation of N-substituted pyrrolidin-2-ones of the general formula I ##STR1## where R.sup.1 is C.sub.1 - to C.sub.20 -alkyl, C.sub.6 - to C.sub.10 aryl or C.sub.7 - to C.sub.12 -aralkyl comprises hydrogenolytically cleaving 5-iminopyrrolidin-2-ones of the general formula II ##STR2## in which the R.sup.1 radicals are identical or different C.sub.1 - to C.sub.20 -alkyl, C.sub.6 - to C.sub.10 -aryl or C.sub.7 - to C.sub.12 -aralkyl, at super-atmospheric pressure and elevated temperature in the presence of a hydrogenation catalyst to give the pyrrolidin-2-ones I; specifically, the 5-iminopyrrolidin-2-ones of the formula II are obtained by reacting .beta.-cyanopropionic acid esters of the general formula III ##STR3## where R.sup.2 is C.sub.1 - to C.sub.20 -alkyl, C.sub.7 - to C.sub.12 -aralkyl or C.sub.6 - to C.sub.10 -aryl, with an amine of the general formula IV

Preparation of N-substituted pyrrolidin-2-ones

A process for the preparation of N-substituted pyrrolidones by catalytic hydrogenation of maleic anhydride, maleic acid and/or fumaric acid in the presence of ammonia uses at least stoichiometric amounts of a primary alcohol or of an aldehyde and uses a catalyst which comprises cobalt and at least one of the elements manganese, copper, phosphorus, molybdenum and/or sodium.

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Heidelberg, Germany

Ulrich Koehler