Evonik Degussa Gmbh

Oxeno Olefinchemie Gmbh

Michael Graβ

Alfred Kaizik

Hinnerk Gordon Becker

Robert Franke

Dirk Fridag

Dieter Hess

Dietrich Maschmeyer

Franz Nierlich

Markus Winterberg

Hans-Gerd Lueken

Markus Priske

Axel Tuchlenski

Wilfried Büschken

Bart Hamers

Goetz Baumgarten

The invention relates to a method for producing a product mixture () by means of the technical hydroformylation of a hydrocarbon stream () that contains isobutene, and for separating the product mixture () that is obtained, as well as to a device for the claimed method and to the use of a claimed device. The problem addressed thereby is that of providing a method and an associated device that allow the amount of high-boiling substances in the product mixture () to be kept as low as possible and thus the yield of the reaction to be increased. The problem is solved by the use of a nano-filtration device (M) for separating the catalyst from the product mixture (), said device having especially high permeability to 3-methylbutanoic acid.

Method and device for the hydroformylation of isobutene and for the separation of the product mixture

Mixture of succinic esters, which is characterized in that the alkyl radical has a proportion of alkyl components having less than 9 carbon atoms of not more than 15% by mass, the alkyl radical has a proportion of alkyl components having more than 9 carbon atoms of not more than 25% by mass and the proportion of 3,5,5-trimethylhexyl radicals is not more than 5 mol % and the proportion of linear n-nonyl radicals is not more than 15 mol %.

Mixture of succinic esters as plasticizer

The invention relates to mixtures of isononyl furan-2,5-dicarboxylate of formula (I), methods for producing said mixtures of isononyl furan-2,5-dicarboxylate of formula (I), compositions containing mixtures of isononyl furan-2,5-dicarboxylate of formula (I), uses of the mixtures of isononyl furan-2,5-dicarboxylate of formula (I) as plasticizers, and uses of the aforementioned compositions containing isononyl furan-2,5-dicarboxylate of formula (I).

2,5-furan dicarboxylate derivatives, and use thereof as plasticizers

The present invention relates to mixtures of alicyclic polycarboxylic esters with high cis content, to a process for their preparation by ring-hydrogenation of the corresponding aromatic polycarboxylic esters, and also to the use of the mixtures.

Mixture of alicyclic polycarboxylic acid esters having high cis isomer content

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Haltern am See, Germany

Michael Graβ