Basf Se Corporation

Basf Aktiengesellschaft

Dow Technology Investments LLC

Rainer Papp

Jens Rudolph

Rocco Paciello

Thomas Mackewitz

Christian Bittner

Marcus Guzmann

Ulrich Steinbrenner

Sven Crone

Wolfgang Ahlers

Roland Krokoszinski

Andrea Haunert

Marcus Sigl

Frank Poplow

Hans-Günter Thelen

Wolfgang Siegel

Ulrich Müller

Arno Lange

Konrad Knoll

Boris Breitscheidel

Helmut Mach

Klemens Massonne

Günter Oetter

Alexander Weck

Markus Schubert

Hartwig Voss

Thomas Wettling

Thomas Carl Eisenschmid

Michael Bartsch

Michael Röper

Oliver Bey

Harald Rust

Klaus Halbritter

Anthony G Abatjoglou

Matthias Maase

Stefan Bitterlich

Thomas Hill

Christoph Benisch

Edgar Zeller

Veit Stegmann

Armin Lange De Oliveira

Matthias Kiefer

Till Adrian

Heinrich-Josef Blankertz

Ulf Dietrich

Michael Becker

Steffen Oehlenschläger

Oliver Huttenloch

Phillip Hanefeld

Martin Volland

Frank Heimann

Till Blum

Irvin B Cox

Hans-Michael Walter

Werner Peschel

Ronald R Peterson

Dag Wiebelhaus

Armin Ulonska

Frank Huetten

Arnd Böttcher

Ralf Noe

Oetter Günter

Klaus Seip

Jürgen Stephan

Mirko Haider

Stephan Zuend

Jonas Schwaben

Thomas Holtmann

Oliver Christian Gobin

Joachim Wulff-Doering

Verena Seitz

Miguel Flores

Kathrin Luise Mariethres Werth

Christoph Obler

Ludwig Herk

Oliver Ryll

Klaus Diehl

Thomas Heldemann

Ludwig Heck

Hans-Guenter Thelen

Steffen OEHLENSCHLÄGER

A hydroformylation process for preparing 3,5,5-trimethylhexanal comprising reacting 2,4,4-trimethylpent-2-ene with Hand CO in a reaction zone in the presence of one or more free organophosphite ligands of the general formula (I)

Low-pressure hydroformylation of diisobutene

A process for preparing oligo ethylene glycol methyl ether borate involves feeding boric acid and oligo ethylene glycol monomethyl ether into a reactor, and reacting to obtain a raw product containing oligo ethylene glycol methyl ether borate, water, and unreacted boric acid and oligo ethylene glycol monomethyl ether. The raw product is fed to a reactive distillation device and boric acid is reacted with oligo ethylene glycmonomethyl ether for full conversion of boric acid. A distillate stream containing water is transferred from the top of the reactive distillation device to a condenser, and a condensed liquid stream is recycled to the top of the reactive distillation device. A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device. The bottom product stream is partially recycled to a reboiler. The resulting vapor stream is recycled to the bottom of the reactive distillation device.

Process for preparing oligo ethylene glycol methyl ether borate

A process for preparing Cto Cmonohydroxy compounds from a bottom fraction arising in the distillation of a crude mixture of Cto Coxo-process aldehydes from cobalt-catalyzed or rhodium-catalyzed hydroformylation, or in the distillation of a crude mixture of Cto Coxo-process alcohols, which comprises contacting the bottom fraction in the presence of hydrogen with a catalyst comprising copper oxide and aluminum oxide, at a temperature of 150&#xb0; C. to 300&#xb0; C. and a pressure of 20 bar to 300 bar and subjecting the resulting crude hydrogenation product to distillation, and the amount of Cto Cmonohydroxy compounds present in the crude hydrogenation product after the hydrogenation being greater than the amount of Cto Cmonohydroxy compounds given stoichiometrically from the hydrogenation of the ester and aldehyde compounds present in the bottom fraction, including the Cto Cmonohydroxy compounds still present in the bottom fraction before the hydrogenation.

Hydroformylation method for the large-scale production of aldehydes and/or alcohols

Method of removing cobalt deposits in a reactor for the cobalt-catalyzed high-pressure hydroformylation of olefins by treatment with aqueous nitric acid, wherein the reactor is at least partly filled with aqueous nitric acid and the temperature of the aqueous nitric acid is increased during the treatment.

Method for removing cobalt deposits in a high-pressure olefin hydroformylation reactor

Proposed is a cylindrical reactor () having a vertical longitudinal axis for continuous hydroformylation of a C-C-olefin or a mixture of C-C-olefins with synthesis gas in the presence of a homogeneously dissolved metal carbonyl complex catalyst,

Cylindrical reactor and use thereof for continuous hydroformylation

The present invention relates to a process for preparing hydroformylation products of olefins having at least four carbon atoms, in which a high proportion of both the linear C-olefins having a terminal double bond comprised in the olefin-comprising feed used and of the linear C-olefins having an internal double bond is converted into hydroformylation products. Furthermore, the invention relates to a process for preparing 2-propylheptanol which comprises such a hydroformylation process.

Method for the hydroformylation of olefins

In the hydroformylation of olefins having 6 to 20 carbon atoms in the presence of a cobalt catalyst in the presence of an aqueous phase with thorough mixing in a reactor, a hydroformylation products-containing first stream is withdrawn at the top of the reactor and an aqueous phase-containing second stream is withdrawn from the bottom of the reactor. The flow rate of the second stream is controlled in accordance with a temperature which is measured at a point in the bottom of the reactor or in a line leading out of the bottom of the reactor. The yield of crude hydroformylation product is increased as a result of stable sustained operation.

Process for hydroformylation of olefins

The present invention relates to a process for the catalytic aldol condensation of aldehydes, in particular for preparing &#x3b1;,&#x3b2;-unsaturated aldehydes, in a multiphase reactor.

Process for the catalytic aldol condensation of aldehydes

A process for preparing oligomers by continuous oligomerization of butenes is described, wherein a) a feed stream 1) comprising 1-butene and 2-butene in a total concentration of from 10 to 70% by weight and from 10 to 60% by weight of isobutane is reacted until more than 60% by weight of the 1-butene comprised in the feed stream 1 but less than 50% by weight of the 2-butene comprised in feed stream 1 have been converted into oligomers. b) The oligomers obtained in a) are separated off and optionally passed to a further work-up and the remaining residual stream is fed to work-up by distillation. c) Isobutane is separated off by distillation from the residual stream, and d) the isobutane-depleted stream obtained after the work-up by distillation c) is reacted to form oligomers.

Process for preparing oligomers of butene

A process of controlling heavies in a recycle catalyst stream, particularly, for use in a continuous hydroformylation process of converting an olefin with synthesis gas in the presence of a hydroformylation catalyst to form an aldehyde product stream with subsequent separation of the catalyst for recycle to the hydroformylation step. Heavies are controlled, and preferably reduced, by means of feeding a recycle gas stream, taken as a portion of an over-head stream from a condenser, back to a vaporizer wherein the aldehyde product stream is separated.

Process of controlling heavies in a recycle catalyst stream

The present invention relates to the use of isoalkane mixtures for reducing or minimizing the dust emission during the handling of pulverulent construction chemistry products, a process for the preparation of the pulverulent construction chemistry products, and hydraulically setting materials comprising the isoalkane mixtures according to the invention.

Use of isoalkane mixtures for dedusting construction chemistry products

Surfactants of the general formula R&#x2014;X where Ris an aliphatic CH-alkyl radical and X is a hydrophilic group, and the mean degree of branching of the Rradical is from 2.8 to 3.7. Mixtures which comprise such surfactants and the use of such surfactants and of mixtures thereof for tertiary mineral oil extraction.

Surfactants for tertiary mineral oil extraction based on branched alcohols

The present invention relates to a process for the hydroformylation of ethylenically unsaturated compounds by reaction with carbon monoxide and hydrogen in the presence of a catalytically active fluid which comprises a dissolved metal complex of a metal of transition group VIII of the Periodic Table of the Elements with at least one phosphoramidite compound as ligand, wherein the fluid is brought into contact with a base.

Stabilization of hydroformylation catalysts based on phosphoramide ligands

Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base

Method for the separation of acids from chemical reaction mixtures by means of ionic fluids

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Speyer, Germany

Rainer Papp