Evonik Oxeno Gmbh

Evonik Degussa Gmbh

Oxeno Olefinchemie Gmbh

Evonik Operations Gmbh

Evonik Oxeno Gmbh & Co. Kg

Roquette Freres

Michael Grass

Alfred Kaizik

Wilfried Bueschken

Florian Boeck

Benjamin Woldt

Axel Tuchlenski

Michael Woelk-Faehrmann

Robert Franke

Hinnerk Gordon Becker

Johannes Kraft

Dirk Fridag

Klaus-Diether Wiese

Franz Nierlich

Stefan Buchholz

Udo Lenz

Corinna Hecht

Benedikt Dercks

Hans-Gerd Lueken

Walter Kaminsky

Wilfried Büschken

Dagmara Ortmann

Lena Altmann

Matthias Beller

Ralf Jackstell

Harald Haeger

Dieter Hess

Dietrich Maschmeyer

Armin Matthias Rix

Markus Winterberg

Horst-Werner Zanthoff

Jarmo Lindroos

Arild Follestad

Markus Priske

Bart Hamers

Kurt-Alfred Gaudschun

Goetz Baumgarten

Marc Becker

Tore Dreng

Harald Häger

Christoph Hiller

Johan Anton

Stefan Münzner

Juergen Koch

Julia Bauer

Christoph Ehlers

Thomas Schneider

Frank Brocksien

Carsten Gehlen

Burkhard Reeken

Ted M Pettijohn

Stefanie Derlin

Andreas Gevers

Gerhard Ellermann

Jürgen Koch

Imke Schulz

Dietmar Gubisch

Pal Christian Bentzrod

Hans-Gerd Lüken

André Huber

Grzegorz Ziomek

Arne Lang

Christine Blex

Ulrike Blumenthal

Norbert Scholz

Christian Böing

Anne Brit Bjaland

Pal Bentzrod

Ted Pettijohn

Florian Sebastian Boeck

Morten Lundquist

Michael Woelk-Fährmann

Charlotte Schneider

The invention provides multilayer surface coverings each having a layer obtained from a filler-containing PVC plastisol and obtained from a filler-free PVC plastisol, each of which comprises a plasticizer composition comprising bis(2-ethylhexyl) cyclohexane-1,4-dicarboxylate. Such surface coverings may be used as floor coverings or as imitation leather.

Use of bis(2-ethylhexyl) cyclohexane-1,4-dicarboxylate as plasticizer in surface coverings

A plasticizer composition contains a compound according to the following formula (I) wherein the radicals R, Rand Rare each independently selected from n-pentyl, 2-methylbutyl and 3-methylbutyl. The plasticizer composition can be used as plasticizer for polymers and a corresponding plastic composition contains the plasticizer composition.

Plasticizer composition comprising tripentyl esters of 1,2,4-cyclohexanetricarboxylic acid

The invention provides a process for regenerating a catalyst used for the hydrogenation of an aromatic species, consisting of several steps. First the system is purged with nitrogen, then air is metered in stepwise, and the addition of nitrogen is subsequently ended until only air is present.

Process for regeneration of hydrogenation catalysts

A process prepares dialkyl 1,4-cyclohexanedicarboxylates by ring hydrogenation of the corresponding dialkyl terephthalate having a CO value of less than 0.3 mg KOH/g. The dialkyl 1,4-cyclohexanedicarboxylates thus produced can be used as plasticizers or as a component of a plasticizer composition for plastics, in particular PVC.

Process for preparing dialkyl 1,4-cyclohexanedicarboxylates

The invention provides a process for regenerating a catalyst used for the ring hydrogenation of an aromatic species, especially an aromatic ester, wherein a gas stream containing a particular amount of oxygen is used for the regeneration.

The invention relates to triesters of cyclohexanetripropionic acid, preparation thereof and use thereof as plasticizers for polymers wherein examples of the triester of cyclohexanetripropionic acid include tri(butyl) cyclohexane-1,2,4-tripropionate, tri(methylpropyl) cyclohexane-1,2,4-tripropionate, tri(pentyl) cyclohexane-1,2,4-tripropionate, tri(pentyl) cyclohexane-1,2,4-tripropionate, tri(2-methylbutyl) cyclohexane-1,2,4-tripropionate, tri(3-methylbutyl) cyclohexane-1,2,4-tripropionate, tri(hexyl) cyclohexane-1,2,4-tripropionate, tri(hexyl) cyclohexane-1,2,4-tripropionate, tri(heptyl) cyclohexane-1,2,4-tripropionate, tri(heptyl) cyclohexane-1,2,4-tripropionate, tri(octyl) cyclohexane-1,2,4-tripropionate, tri(octyl) cyclohexane-1,2,4-tripropionate, tri(2-ethylhexyl) cyclohexane-1,2,4-tripropionate, tri(nonyl) cyclohexane-1,2,4-tripropionate, tri(nonyl) cyclohexane-1,2,4-tripropionate, tri(decyl) cyclohexane-1,2,4-tripropionate, tri(decyl) cyclohexane-1,2,4-tripropionate, and tri(2-propylheptyl) cyclohexane-1,2,4-tripropionate.

Triesters of cyclohexanetripropionic acid

An ester mixture of trialkyl esters of cyclohexane-1,2,4-tricarboxylates having isomeric pentyl radicals in which more than 5 mol % of the isomeric pentyl radicals are branched.

Tripentyl esters of trimellitic acid

A mixture of isomeric dipentyl terephthalates, pentyl radicals of which are n-pentyl radicals to an extent of less than 60 mol %, characterized by a low viscosity which does not increase significantly even at temperatures below 40&#xb0; C. Plastisols comprising these mixtures have a low plastisol viscosity which moreover increases only to a minor degree with time.

Diisopentyl terephthalate

The present invention relates to a method for preparing saturated C- and C-alcohols, wherein the separation of the C-alcohols and the C-alcohols is effected by means of at least one two-column system or by means of at least one dividing wall column.

Method for obtaining alcohols from aldehydes

Tripentyl esters of trimellitic acid, especially mixtures of triisopentyl esters of trimellitic acid comprising isomeric pentyl radicals in which more than 5 mol % of the isomeric pentyl radicals incorporated in the ester mixture are branched, have good compatibility with PVC and PVC-containing polymers and simultaneously exhibit a lesser tendency to migrate.

The present invention relates to a method for preparing saturated C- and C-alcohols, wherein the ratio of C- to C-alcohols is controlled by a distillative separation of the aldehydes used.

Method for obtaining alcohols from aldehydes III

Ester mixtures comprising the esters A(COOR)(COOR), A(COOR)(COOR), A(COOR)(COOR)and A(COOR)(COOR), can be produced in a targeted way by processes in which acids A(COOH)or derivatives thereof are reacted with an amount (m+s) of ROH and an amount mof ROH, the reaction mixture being heated at boiling, the alcohol ROH having a lower boiling point than the alcohol ROH, A being an aromatic, alicyclic or aliphatic radical, x being 1 or 2, and Rand Rindependently of one another being substituted or unsubstituted aryl radicals or linear or branched, substituted or unsubstituted alkyl radicals having 3 to 20 carbon atoms, mand mcorresponding to the mole equivalents of the alcohol radicals ORand ORto be introduced into A(COOH)or derivatives thereof, and sbeing greater than 0.

Production of ester mixtures

The present invention relates to a method for preparing saturated C- and C-alcohols, wherein the ratio of C- to C-alcohols is controlled by the diversion of substreams in individual method steps.

Method for obtaining alcohols from aldehydes II

Mixtures containing dipentyl terephthalate, dinonyl terephthalate and pentyl nonyl terephthalate can be prepared with a predetermined distribution of the individual esters in the mixture, and used as plasticizers.

Pentyl nonyl terephthalates

An ester mixture of dianhydrohexitol, a composition comprising the ester mixture and a polymer composition comprising the ester mixture or the composition, the use thereof, and a process by which the ester mixture can be prepared, where the ester mixture has a mean chain length of (8.3) to (9.2).

Dianhydrohexitol diester mixture NMR

Growing community of inventors

Haltern am See, Germany

Michael Grass