Basf Aktiengesellschaft

Basf Se Corporation

Basell Polyolefine Gmbh

Heiko Maas

Marc Walter

Ralf Schulz

Peter Schwab

Michael R&ouml;per

Shahram Mihan

Juergen Gert Tropsch

Jochem Henkelmann

Rocco Paciello

Heinz-Peter Rink

Michael Röper

Werner-Alfons Jung

Jürgen Tropsch

Michael Roeper

Jakob Fischer

Andreas Kern

Wolfgang Steiner

Wolfgang Siegel

Norbert Niessner

Thomas Heidemann

Günter Oetter

Ulrich Steinbrenner

Norbert Schneider

Michael Schulz

Armin Stamm

J&uuml;rgen Tropsch

Hans-Ulrich J&auml;ger

Randolf Köhn

Volker Sch&auml;dler

Guenter Oetter

Rolf Dersch

Goetz-Peter Schindler

Rene Lochtman

Norbert Wagner

Tilo John

Gerhard Schulz

Wolfgang Ahlers

Edgar Zeller

Martin Laun

Thomas Narbeshuber

Wolfgang Brox

Hans-Ulrich Jaeger

Martina Egen

Martina Prinz

Jürgen Pfister

Peter Barghoorn

J&uuml;rgen Schmidt-Th&uuml;mmes

Hartmann F Leube

Christian Kuhrs

Ferenc Molnar

Juergen Stephan

Gerald Lippert

Bettina Sobotka

Guido Seifert

Hans-Ulrich Jäger

Juergen Pfister

Hans-Ulrich Pröbstle

Process for preparing melamine by converting urea in the presence of a solid catalyst in one reactor or in a plurality of reactors connected in series in the temperature range from 370&#xb0; C. to 430&#xb0; C., cooling and filtering the gas formed in the urea conversion, removing the melamine by desublimation and recycling a portion of the gas present after the melamine removal ('cycle gas') into the reactor or the reactors, which comprises performing all of the above stages at a pressure in the range from 4 bar abs. to 10 bar abs.

Process for preparing melamine

A process for the preparation of melamine by decomposition of urea with the use of a catalyst, the catalyst comprising

Method for producing melamine

A magnetorheological formulation which comprises at least one base oil, at least one magnetizable particle, a at least one dispersant and a at least one thixotropic agent is described.

Magnetorheological liquid

The preparation of alkylaryl compounds takes place, inter alia, by a) preparation of a C-olefin mixture from LPG, LNG or MTO streams, b) reaction of the C-olefin mixture obtained in this way over a metathesis catalyst for the preparation of an olefin mixture comprising-pentene and/or-hexene, and optional removal of-pentene and/or-hexene, c) dimerization of the-pentane and/or-hexene obtained in stage b) over a dimerization catalyst to give a mixture comprising C-olefins, and optional removal of the C- olefins, d) reaction of the C-olefin mixtures obtained in stage a) with an aromatic hydrocarbon in the presence of an alkylation catalyst to form alkylaromatic compounds, it being possible to add additional linear olefins prior to the reaction.

Process for the preparation of alkylaryl compounds and sulfonates thereof

The invention describes a process for the preparation of novel surfactant alcohols and surfactant alcohol ethers by derivatization of olefins having from about 10 to 20 carbon atoms or of mixtures of such olefins to give alkanols, and optional subsequent alkoxylation, which comprises subjecting a C-olefin mixture to metathesis, dimerizing the resulting olefins, and then derivatizing them to give surfactant alcohols, and optionally alkoxylating said alcohols. The olefin mixture obtained in the dimerization has a high proportion of branched components and less than 10% by weight of compounds which contain a vinylidene group. invention further describes the use of the surfactant alcohols and surfactant alcohol ethers to give surfactants by glycosylation or polyglycosylation, sulfation or phosphation.

Process for the preparation of surfactant alcohols and surfactant alcohol ethers, the prepared products and their use

Olefins are oligomerized by contacting an olefin with a catalyst system that is comprised of a) at least one transition metal complex that is complexed with a polydentate complexing ligand and b) an alkylaluminoxane, each component being present in such amounts that the molar ratio of aluminum transition metal is greater than 10, wherein at least part of the amount of the transition metal complex is added continuously or in portions during the oligomerization.

Method for oligomerizing olefins

Disclosed is a method for the oligomerization of olefins, wherein an olefin is brought into contact with a catalyst system that is obtained from a chromium source, a cycloalkylalkyl-substituted triazacyclohexane, especially a 1,3,5-tris-(cycloalkylalkyl)-1,3,5-triazacyclohexane and an activator such as an alkyl aluminum compound or an alkylalumoxane.

Method for the oligomerization of olefins using a cycloalkylalkyl-substituted triazacyclohexane

The invention describes detergents and cleaners comprising an effective proportion of one or more surfactants of the formula I in which

Oxoalcohol-based detergent

The invention relates to secondary Cto Csurfactant alcohols of the general formula (I), wherein R represents methyl or ethyl and R' represents a linear or branched alkyl group with 6&#x2013;13 C atoms, excepting 5-ethyl-2-nonanol and 6-ethyl-3-decanol, in addition to fatty alcohol alkoxylates, alkyl phosphates, alkyl sulphates, alkyl ether phosphates and alkyl ether sulphates. The secondary Cto Csurfactant alcohols can be produced by a simple aldol condensation of linear or branched saturated or unsaturated C&#x2013;Caldehyde excepting 2-ethyl hexanal, with acetone or methyl ethyl ketone and the subsequent hydrogenation of the condensation product. In the preferred method, the aldol condensation is heterogenically catalyzed under hydrogenation conditions and the saturated ketone that has been formed is subsequently hydrogenated 

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The invention relates to a process for the preparation of alkylarylsulfonates by

Method for producing alkyl aryl sulphonates

The invention describes a process for the preparation of surfactant alcohols and surfactant alcohol ethers which are, inter alia, highly suitable as surfactants or for the preparation of surfactants. The process, starting from olefin mixtures having a defined minimum content of linear hexenes, gives mixtures having a predominant fraction of branched dodecenes, which are subsequently derivatized to give surfactant alcohols and then optionally alkoxylated. The surfactant alcohol mixture obtained in the process has a degree of branching of from 2.0 to 3.0 and in particular exhibits advantageous properties as regards ecotoxicity and biodegradability. A description is also given of the use of the surfactant alcohols and surfactant alcohol ethers as surfactants by glycosidation or polyglycosidation, sulfation or phosphation.

Method for producing alcohol surfactants and alcohol ether surfactants, the products obtained and their use

A catalyst comprising at least one complex of a metal of transition group VIII comprising at least one monodentate, bidentate or multidentate phosphinamidite ligand in which the phosphorus atom and the oxygen atom of the phosphinamidite group form part of a 5- to 8-membered heterocycle can be used for the hydroformylation and hydrocyanation of compounds containing at least one ethylenically unsaturated double bond. The phosphinamidite ligand is, for example, represented by the following formulaewhereinrepresents an optionally substituted 5- to 8-membered heterocycle wherein A represents carbon ring members;represents an optionally substituted N-bonded heterocycle wherein (Het) indicates optional ring heteroatoms in addition to the N; and

Catalyst comprising a metal complex of the VIII subgroup based on a phosphine amidite ligand and its utilization for hydroformylation and hydrocyanation

An oligomerization catalyst for olefins is obtainable from

Oligomerization catalyst

Polyisocyanates as coating components for coating means rich in solids

In a process for oligomerizing C -olefins by reactin of a C -olefin-containing reaction mixture over a nickel-containing fixed-bed catalyst, the reaction over the fixed-bed catalyst is run at a conversion to oligomerized C -olefins of not more than 30% by weight, based on the reaction mixture.

Method for oligomerizing C6-olefins

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Mannheim, Germany

Heiko Maas