Basf Aktiengesellschaft

Basf Aktengesellschaft

Basf Se Corporation

Peter Stops

Rudolf Kummer

Karsten Eller

Volkmar Menger

Rainer Becker

Rolf-Hartmuth Fischer

Werner Bertleff

Uwe Dingerdissen

Manfred Julius

Karl-Heinz Ross

Franz Josef Brocker

Erhard Henkes

Karl Gerhard Baur

Martin Rudloff

Robert Maerkl

Erwin Brunner

Helmut Schmidtke

Hubert Lendle

Paul Panitz

Wilfried Seyfert

Gebhard Kuehn

Rolf Lebkücher

Rolf Hartmuth Fischer

Matthias Irgang

Andreas Henne

Eugen Gehrer

Wolfgang Reif

Siegfried Winderl

Lothar Franz

Wolfgang Richter

Kurt Schwirten

Peter Magnussen

Volker Diehl

Fritz Graf

Ernest Miesen

Gerhard Frank

Hans Hellbach

Ulrich Kanne

Gunter Lauth

Thomas Papkalla

Jurgen Herrmann

Rudolf Weigand

Guenter Schuch

Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 320 to 380&#xb0; C. and an absolute pressure of from 70 to 120 bar.

Method for the continuous production of N-methyl-2-pyrrolidone (NMP)

A process for continuously preparing 2-pyrrolidone by reacting gamma-butyrolactone with ammonia in the liquid phase in the presence of water, wherein the reaction is carried out at a temperature of from 275 to 300&#xb0; C. and an absolute pressure of from 140 to 180 bar.

Method for the production of 2-pyrrolidone

Preparation of amines from olefins over boron beta-zeolites

A process for the preparation of amines by reacting an olefin with ammonia or a primary or secondary amine at a temperature of from 200 to 350.degree. C. and a pressure of from 100 to 300 bar in the presence of at least one zeolite having the specific structure type PSH-3, MCM-22 or SSZ-25, as identified by X-ray diffractogram, or mixtures of these zeolites. These specific catalysts are broadly identified as alumina zeolites and may be modified by ion exchange, doping with other metals, by dealumination to remove or replace the alumina content and by other well known after treatments such as calcination, acid-treatment and the like. Monoolefins are preferred reactants but di- and polyolefins also can be reacted with relatively high selectivity and less tendency toward polymerization.

Preparation of amines from olefins over zeolites of the type PSH-3,

Process for producing amines from olefins on zeolites of types SSZ-33,

A process for preparing an amine by catalytic reaction of an olefin with ammonia or a primary or secondary amine by contacting a mixture of the reactants in a reactor at 200.degree. to 400.degree. C. and an elevated pressure up to 700 bar in the presence of a catalyst consisting essentially of an X-ray amorphous (non-crystalline) mesoporous catalyst, some of which may have a microporous non-crystalline content. The catalyst has the composition

Preparation of amines

A process for the preparation of amines of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 denote hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkynyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.4 -C.sub.20 alkylcycloalkyl, C.sub.4 -C.sub.20 cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 alkylaryl or C.sub.7 -C.sub.20 aralkyl,

Preparation of amines from olefins over crystalline oxides based on

A process for the preparation of amines of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 denote hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.4 -C.sub.20 alkylcycloalkyl, C.sub.4 -C.sub.20 cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 alkylaryl, or C.sub.7 -C.sub.20 aralkyl,

Preparation of amines from olefins over zeolites of the type SSZ-37

Catalyst and process for the preparation of butene-2-diol-1,4 by the hydrogenation of butyne-2-diol-1,4 in aqueous solution over a palladium-containing fixed-bed catalyst, which is doped with lead or cadmium, in which a catalyst is used which has been made by applying Pd and Pb or Pd and Cd successively, by vapor deposition or sputtering, to a metal gauze or a metal foil acting as support material followed by forming the catalyst at an elevated temperature in air.

Process for the selective hydrogenation of butyne-1,4-diol to

Process and catalyst for the selective hydrogenation of butynediol to

A process for the preparatiion of an amine which comprises reacting a primary or secondary alcohol and a nitrogen compound selected from the group consisting of ammonia and primary and secondary amines, at temperatures of from 80.degree. to 250.degree. C. and pressures of from 1 to 400 bar using hydrogen in the presence of a zirconium/copper/nickel catalyst, wherein the catalytically active material contains from 20 to 85 wt % of oxygen-containing zirconium compounds, calculated as ZrO.sub.2, from 1 to 30 wt % of oxygen-containing compounds of copper, calculated as CuO, from 30 to 70 wt % of oxygen-containing compounds of nickel, calculated as NiO, from 0.1 to 5 wt % of oxygen-containing compounds of molybdenum, calculated as MoO.sub.3 and from 0 to 10 wt % of oxygen-containing compounds of aluminum and/or manganese, calculated as Al.sub.2 O.sub.3 or MnO.sub.2, respectively.

Palladium-containing fixed-bed catalyst for the hydrogenation of

A process for the oxidation of ammonium ions and organic carbon in wastewaters containing ammonium ions and organic carbon by means of nitric acid at from 100.degree. to 350.degree. C., wherein the molar ratio between organic carbon and ammonium nitrogen is adjusted to a value in the range from 0.3:1 to 4:1 by addition of organic carbon or ammonium nitrogen.

Oxidation of ammonium ions and organic carbon in wastewaters

A method of separating .gamma.-butyrolactone from a mixture containing ethanol, tetrahydrofuran, water, n-butanol, 1,4-butanediol, diethyl succinate and .gamma.-butyrolactone, by distillation in vacuum columns.

Method of separating .gamma.-butyrolactone from mixtures containing

Carboxylic esters obtained by reacting olefinically unsaturated compounds with carbon monoxide and alcohols and containing aldehydes, acetals and/or unsaturated compounds are purified by

Purification of carboxylic esters which contain aldehydes, acetals

Growing community of inventors

Altrip, Germany

Peter Stops