Evonik Degussa Gmbh

Evonik Operations Gmbh

Florian Boeck

Michael Grass

Benjamin Woldt

Robert Franke

Dirk Fridag

Udo Lenz

Corinna Hecht

Benedikt Dercks

Christoph Hiller

Stefan Münzner

Christoph Ehlers

Harald Haeger

Carsten Gehlen

André Huber

Ulrike Blumenthal

Christine Blex

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.

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Muenster, Germany

Florian Boeck