Back to results
US 2010/0137486 A1Published application
Mixture of alicyclic polycarboxylic esters having high cis content
AssigneeOxeno Olefinchemie GmbH
InventorsWilfried BUESCHKEN, Michael GRASS, Alfred KAIZIK, Dietrich MASCHMEYER, Axel TUCHLENSKI, Franz NIERLICH
Life of this patent
Estimating the term…
Abstract
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.
Claims14
1-15. (canceled)
An alicyclic polycarboxylic acid ester mixture, comprising:
- at least two isomers of an alicyclic polycarboxylic acid ester whose structures are determined by the positions of the ester groups on the ring system of the ester compound, with the exception of dimethyl 1,2-cyclohexanedicarboxylates, wherein the proportion of the cis isomers in the isomer mixture is above 93 mol %, and wherein the alicyclic polycarboxylic acid ester mixture is prepared by hydrogenating the corresponding aromatic polycarboxylic acid esters over a catalyst which comprises a precious metal of the 8th transition metal Group of the Periodic Table and at least one metal of the 2nd transition Group of the Periodic Table.
Dependencies are inferred from the claim text.