Basf Aktiengesellschaft

Basfaktiengesellschaft

Basf Se Corporation

Thomas Narbeshuber

Ulrich Steinbrenner

Eugen Gehrer

Christoph Sigwart

Rolf Hartmuth Fischer

Regina Benfer

Matthias Eiermann

Michael Trefzer

Klaus Ebel

Michael Hesse

Ekkehard Schwab

Hartmut Hibst

Peter Zehner

Rolf-Hartmuth Fischer

Andreas Tenten

Karsten Eller

Georg Heinrich Grosch

Gerhard Cox

Heiko Maas

Martin Haubner

Marco Bosch

Michael Baier

Michael Roeper

Shelue Liang

Nils Bottke

Gerd Linden

Juergen Stephan

Gerd Bohner

Manfred Barl

Jürgen Stephan

Soeren Zimdahl

Joerg Unger

In a process for the preparation of alkylaromatic compounds by reacting C-olefins, or alcohols from which C-olefins are formed under the reaction conditions, with an aromatic hydrocarbon in the presence of an alkylation catalyst, the reaction is carried out in a reactor cascade of at least two reactors, where each of the reactors comprises the alkylation catalyst, at least 80% of the aromatic hydrocarbon are fed into the first reactor of the reactor cascade, and at least 40% of the olefins are intermediately fed in after the first reactor.

Method for producing alkyl aromatic compounds

In a process for preparing alkylaryl compounds by reacting a C-monoolefin mixture with an aromatic hydrocarbon in the presence of an alkylation catalyst to form alkyl aromatic compounds and if appropriate subsequently sulfonating and neutralizing the resulting alkylaryl compounds, in the C-monoolefins, on average, more than 0% and up to 100% of methyl branches are present in the longest carbon chain and fewer than 50% of the methyl branches are in the 2-, 3- and 4-position, calculated starting from the chain ends of the longest carbon chain.

Method for producing alkylaryl compounds and alkylaryl sulphonates

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

Method for producing alkyl aryl sulphonates

The invention relates to a catalyst which contains a catalytically active quantity of at least one oxygen-containing molybdenum and/or wolfram compound on an oxidic support material and which has been calcinated at temperatures of 400 to 900&#xb0; C. after the precursor compound of the catalytically active compounds have been applied to the support material or to a support material precursor. The transport pores for this catalyst each have a diameter of &#x3e;25 nm and a volume of at least 50 mm/g. The catalyst contains x &#x3bc;mol (wolfram and/or molybdenum)/mmolybdenum and/or wolfram, with 10.1&#x3c;x&#x3c;20.9 in relation to the finished catalyst, with the oxidic support material having a BET surface area of 135 to 220 m/g. Catalysts of this type are characterized by an acidity of at least 70 &#x3bc;mol/g at pKs&#x3c;&#x2212;3 in the dry state and are therfore very active. The invention also relates to a method for producing a catalyst of this type and to the preferred use thereof.

Catalyst and method for producing polytetrahydrofurane

A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 50 mol % and an average molecular weight M of 280-10000 dalton by the cationic polymerization in the liquid phase of isobutene or hydrocarbon mixtures comprising isobutene comprises polymerizing at from &minus;30&deg; C. to &plus;40&deg; C. in the presence of a heterogeneous polymerisation catalyst comprising one or more oxides of the elements of transition groups V and VI of the Periodic Table of the Elements or in the presence of a heterogeneous polymerization catalyst comprising one or more oxidic compounds of one or more elements of transition groups V and VI of the Periodic Table of the Elements supported on a non-zeolitic oxidic support material which is not an oxygen-containing zirconium compound, the catalyst not containing a technically effective amount of halogen.

Method for producing halogen-free reactive polyisobutene

Preparation of halogen-free, reactive polyisobutene

The invention relates to a process for preparing lactams by cyclizing hydrolysis of amino nitriles with water in the gas phase on catalysts which comprise oxides or mixed oxides of the metals of groups 3, 4, 5, 13 and/or 14 of the Periodic Table, where appropriate in addition a metal oxide of groups 6, 7, 8, 9 and/or 10, and further comprise a phosphate, carbonate, silicate, arsenite, arsenate, antimonite, antimonate and/or nitrate of said metals and/or, if metal oxides of groups 6, 7, 8, 9 or 10 are present, a sulfate of the abovementioned metals.

Method for producing lactams

Basic catalyst based on titanates, zirconates and hafnates

The catalyst comprising at least one alkali metal on a spinel or inverse spinel as carrier may be doped with at least one compound of an alkali metal and/or alkaline earth metal, where the alkali metal/carrier ratio by weight is from 0.01 to 5 and, when a dopant is present, the dopant/carrier ratio by weight is from 0.01 to 5. The spinel therein has formula (I) and the inverse spinel has formula (II)

Catalyst and side-chain alkylation therewith

The catalyst comprises at least one alkali metal on a doped carrier, where the doped carrier can be prepared from at least one zirconium and/or alkaline earth metal compound as carrier and at least one alkali metal compound as dopant and calcining the doped carrier at 350.degree. C. or below, the alkali metal/carrier ratio by weight being from 0.01 to 5 and the dopant/carrier ratio by weight being from 0.01 to 5.

Catalyst for side-chain alkylation

In a process for preparing N-alkenylcarboxamides by dehydration of N-(2-hydroxyalkyl)carboxamides and/or diethers thereof in the presence of a catalyst, molecular sieves, in particular zeolites, are used as catalyst.

Preparation of N-alkenylcarboxamides

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Mannheim, Germany

Thomas Narbeshuber