Basf Se Corporation

Piotr Makarczyk

Boris Breitscheidel

Johann-Peter Melder

Michael Hesse

Ekkehard Schwab

Thomas Heidemann

Volker Schliephake

Martin Ernst

Maximilian Vicari

Ortmund Lang

Thomas Hill

Gerrit Waters

Kai Rainer Ehrhardt

Dirk Grossschmidt

Stefan Iselborn

Marvin Kramp

Lucia Koenigsmann

Sonja Judat

Beatrice Rössler-Feigel

Zsolt Jozsef Szarka

Tile Gieshoff

Zsolt Szarka

Kerstin Mühlheims

Kerstin Muelheims

Beatrice Roessler-Feigel

Aykan Akin

Cornelis Hendricus De Ruiter

Maike Feuerstein

Michael Hoffmann

The present invention relates to a process for purifying benzenepolycarboxylic esters and for preparing cyclohexanepolycarboxylic esters by hydrogenating the purified benzenepolycarboxylic esters. The invention further relates to benzenepolycarboxylic esters and cyclohexanepolycarboxylic esters having a small proportion of by-products, especially of dialkyl ethers, and especially to diisononyl cyclohexane-1,2-dicarboxylate having a small proportion of diisononyl ether. The invention also relates to the use of the cyclohexanepolycarboxylic esters as plasticizers, especially in products intended for human contact, such as children's toys, food packaging and medical articles.

Method for processing benzene polycarboxylic acid esters and use of same to produce cyclohexane polycarboxylic acid esters

In a process for workup of a crude ester comprising esterification catalyst hydrolysis product in suspended particulate form, a) the crude ester is admixed in an emulsifying tank with 1% to 10% by weight of water and the water is emulsified in the crude ester to obtain a suspoemulsion, b) the suspoemulsion from the emulsifying tank is transferred to an agglomerating tank containing an initial charge of water-undersaturated crude ester, such that a water content below the solubility limit of water in the crude ester is established in the mixture of the suspoemulsion and the initial charge of crude ester, as a result of which the suspended particulate esterification catalyst hydrolysis products form stable agglomerates, and c) the agglomerates formed are filtered off.

Process for workup of a crude ester comprising esterification catalyst hydrolysis product in suspended particulate form

The present invention relates to a process for isomerizing linear alpha-olefins having from 4 to 8 carbon atoms over a heterogeneous catalyst, wherein the catalyst comprises a hydrogenation metal and a selectivity promoter selected from among selenium and tellurium on a support, and also a process for preparing 1-olefins by a metathesis reaction of 2-olefins with ethene, wherein the 2-olefins are prepared by the above mentioned isomerization process.

Isomerization of light alpha-olefins to light internal olefins

The present invention relates to a continuous process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine by reacting a feed stream comprising 3-cyano-3,5,5-trimethylcyclohexylimine with hydrogen and ammonia over hydrogenation catalysts, wherein the basicity of the reaction mixture is increased during the reaction by bringing the reaction mixture into contact with a basic compound which is not ammonia and/or a basic catalyst after part of the 3-cyano-3,5,5-trimethylcyclohexylimine has been reacted.

Continuous process for the hydrogenation of 3-cyano-3,5,5-trimethyl-cyclohexylimine

In the process for hydrogenating butadiyne over a catalyst which comprises at least one platinum group metal on an inorganic metal oxide as a support, the hydrogenation is performed at a pressure in the range from 1 to 40 bar and a temperature in the range from 0 to 100&#xb0; C., and from 0.05 to 5% by weight, based on the overall catalyst, of platinum group metal is present on the support.

Process for hydrogenating butadiyne

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Weisenheim am Sand, Germany

Piotr Makarczyk