Basf Aktiengesellschaft

Basf Se Corporation

Basf Corporation

Ströfer, Eckhard

Rolf Pinkos

Rolf Hartmuth Fischer

Rudolf Erich Lorenz

Gerd-Dieter Tebben

Michael Hesse

Stephan Schlitter

Frank Stein

Boris Breitscheidel

Alexander Weck

Martin Haubner

Harald Rust

Arnd B&ouml;ttcher

Joaquim Henrique Teles

Gunther Windecker

Stefan Käshammer

Rolf-Hartmuth Fischer

Michael Steiniger

Tilman Sirch

Shelue Liang

Christian Müller

Daniel Breuninger

Gerd Kaibel

Thomas Krug

Thomas Preiss

Ralf-Thomas Rahn

Roman Dostalek

Olga Schubert

Gerd Tebben

Stephan Andreas Schunk

Peter Schwab

Heiko Urtel

Christophe Bauduin

Axel Paul

Alexander Hauk

Karl Ott

Joachim Wulff-Döring

Wolfgang Fischer

Jochem Henkelmann

Eckhard Stroefer

Christoph Sigwart

Klaus Halbritter

Hans Rupert Merkle

Deepak S Thakur

Arthur Hohn

Arthur H&ouml;hn

Kai Thiele

Stephan Hatscher

Michael Jolyon Sprague

Karl Gerhard Baur

Melanie Brunner

Thomas Genger

Thomas Danner

Lucien Thil

Martin Weber

Klaus Ebel

Rainer Becker

Rocco Paciello

Wolfgang Harder

Ralf Pelzer

Norbert Rieber

Peter Zehner

Klaus Harth

Ulrich Steinbrenner

Karsten Eller

Holger Borchert

Claus Hechler

Marc Walter

Michael Schulz

Michael Röper

Stefan Rittinger

Gunnar Heydrich

Heiner Schelling

Detlef Kratz

Michael Koch

Daniel Urbanczyk

Florian Garlichs

Miriam Bru Roig

Jochen Steiner

Joachim Pfeffinger

Gerhard Theis

Christian Mueller

Frank Bienewald

Hans-Juergen Weyer

Anton Meier

Franz Josef Brocker

Volkmar Menger

Markus Rösch

Andrea Haunert

Heike Becker

Eckhard Ströfer

Matthias Eiermann

Henrik Junicke

Peter Polanek

Martin Sohn

Otto Kumberger

Alfred Thome

Christoph Stock

Hans-Juergen Gosch

Filip Deberdt

Franz Josef Br&ouml;cker

Described is a process for producing 1-(4-isobutylphenyl)ethanol by reacting 1-(4-isobutyl-phenyl)ethanone with hydrogen in the presence of a catalyst composition comprising cop-per and one or more metals other than copper, and a use of a respective composition and/or of a pre-composition, the pre-composition comprising a mixture of oxides of copper and oxides of one or more metals other than copper, in a catalytic hydrogenation process for producing 1-(4-isobutylphenyl)ethanol from 1-(4-isobutylphenyl)ethanone.

Process for producing 1-(4-isobutylphenyl)ethanol by hydrogenation of 1-(4-isobutyl-phenyl)ethanone in the presence of a catalyst composition comprising copper

The present invention relates to aroma chemical compositions containing 3,5-diethyl-2-propyl-tetrahydropyran, a 3,5-diethyl-2-propyl-dihydropyran or a 3,5-diethyl-2-propyl-pyran, a mixture of such compounds, a stereoisomer of one of these compounds, or a mixture of stereoisomers of one or more of these compounds. The invention further relates to a method for preparing such compounds, stereoisomers or mixtures thereof, to the composition obtainable by this method, to the use of such compounds as an aroma chemical or for modifying the scent character of a fragranced composition; and to a method for preparing a fragranced composition or for modifying the scent character of a fragranced composition using said compounds. Moreover, the invention relates to 3,5-diethyl-2-propyl-tetrahydropyran, to its stereoisomers and to mixtures of these stereoisomers.

Aroma chemical compositions containing 3,5-diethyl-2-propyl-tetrahydropyran and/or unsaturated derivatives thereof

A process produces a mono vinyl ether, R&#x2014;O&#x2014;CH&#x2550;CH. R represents an organic group with at least three carbon atoms. The process involves reacting a mono hydroxy compound. R&#x2014;OH, with acetylene in presence of a catalyst to get a product mixture containing the mono vinyl ether, unconverted mono hydroxy compound, and the catalyst. To the product mixture, an ester is added that contains at least one ester group, X&#x2014;OC&#x2014;. X is a hydrocarbon group containing less carbon atoms than R. The remaining mono hydroxy compound R&#x2014;OH is reacted with the ester in the presence of the catalyst to get a transesterification product containing at least one ester group, R&#x2014;OC&#x2014;, and an alcohol, X&#x2014;OH. The mono vinyl ether is isolated from the product mixture obtained after the ester addition, optionally followed by purification of the mono vinyl ether by distillation.

Process to produce a mono vinyl ether

Provided herein is a novel process for producing shaped catalyst bodies in which a mixture having aluminum contents of Alin the range from 80 to 99.8% by weight, based on the mixture used, is used to form a specific intermetallic phase, shaped catalyst bodies obtainable by the process of the invention, a process for producing an active catalyst fixed bed including the shaped catalyst bodies provided herein, the active catalyst fixed beds and also the use of these active catalyst fixed beds for the hydrogenation of organic hydrogenatable compounds or for formate degradation.

Method for producing a shaped catalyst body

Process for the continuous hydrogenation of a carboxylic acid (I) to an alcohol (II) by means of hydrogen at a temperature of from 100 to 300&#xb0; C. and a pressure of 10 to 33 MPa abs in a reactor tube through which axial flow occurs and which has a fixed-bed catalyst which is fixed therein and comprises at least one element from the group consisting of Re, Co and Cu, and in which the carboxylic acid (I) to be hydrogenated is present in a liquid mixture (III) comprising the carboxylic acid (I), water and alcohol (II), where the mixture (III) has an acid number of from 0.2 to 25 mg KOH/g and comprises at least 15% by weight of water and at least 20% by weight of alcohol (II) and the flow velocity of the flowing liquid calculated on the basis of the geometric cross-sectional area of the empty, catalyst-free reactor tube is from 10 to 50 m/h.

Method for hydrogenating carboxylic acids in order to form alcohols

Processes for preparing tetrahydrofuran and/or butane-1,4-diol and/or gamma-butyrolactone are provided, including a process for preparing tetrahydrofuran (THF) from succinic acid that has been obtained by conversion of biomass, by conversion of the succinic acid to succinic anhydride, and hydrogenation of the succinic anhydride, with removal of certain secondary components.

Method for producing tetrahydrofurane, 1,4-butanediol or gamma-butyrolactone

Process for preparing monoethylene glycol (MEG) by metal-catalyzed reaction of a dialkyl oxalate of the formula I where Rand Rare each, independently of one another, methyl, ethyl, n-propyl or isopropyl, with hydrogen (H), wherein the dialkyl oxalate (I) is used as melt or as a solution in a solvent, dialkyl oxalate (I) and Hare used in a molar ratio of H:dialkyl oxalate (I) in the range from 4.0 to 30 and the reaction is carried out continuously in a reactor at a cross-sectional loading of &#x2265;10 m/s, a temperature in the range from 150 to 270&#xb0; C., a pressure in the range from 150 to 390 bar and in the presence of a chromium-free heterogeneous catalyst comprising copper.

Method for producing monoethylene glycol

Method for preparing 1,4-butanediol having an APHA color index of less than 30 by treating substance mixtures comprising 1,4-butanediol by distillation of the 1,4-butanediol in the presence of complex hydrides.

Method for the preparation of 1,4-butane diol having an APHA color index of less than 30

Process for purifying N-alkylpyrrolidones which due to a previous use comprise at least one of the impurities of the formula I or II where R is hydrogen or a C1-C20-alkyl group,wherein

Process for purifying N-alkylpyrrolidones

A process for decomposing formates in formate-containing compositions of matter comprises reacting formate-containing compositions of matter in the presence of at least one heterogeneous catalyst comprising lanthanum and at a temperature of from 80 to 180&#xb0; C. and a pressure of from 0.1 to 60 bar, the formate-containing compositions of matter having a pH of from 6.5 to 10.

Method for breakdown of formates

Provided are catalysts suitable for the production of tetrahydrofuran from 1,4-butanediol. Also provided are methods of use of these catalyst, as well as catalyst systems. The catalysts described herein contain only Lewis acidity, but not Br&#xf8;nsted acidity, which results in decreased production of ether byproducts.

Catalyst for tetrahydrofuran synthesis

Provided are catalysts suitable for the production of tetrahydrofuran from 1,4-butanediol. Also provided are methods of use of these catalyst, as well as catalyst systems. The catalysts described herein contain only Lewis acidity, but not Bro&#xf8;nsted acidity, which results in decreased production of ether byproducts.

A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).

Process for isolating tetrahydrofuran

In a process for preparing a supported hydrogenation catalyst with increased hydrogenation activity, which comprises a hydrogenating metal and/or an oxide of a hydrogenating metal on an AlO-containing support material, said calcined supported hydrogenation catalyst is treated before or after the final shaping thereof and before use thereof in the hydrogenation with a base solution having a pH of &#x3e;10 at a temperature in the range from 20 to 120&#xb0; C. for 1 to 300 hours.

Method for producing a supported hydrogenation catalyst having increased hydrogenation activity

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Bad Duerkheim, Germany

Rolf Pinkos