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US 7,683,204 B2Granted
Mixture of alicyclic polycarboxylic acid esters having high cis isomer content
AssigneeOxeno Olefinchemie GmbH
InventorsWilfried Büschken, Michael Graβ, Alfred Kaizik, Dietrich Maschmeyer, Axel Tuchlenski, Franz Nierlich
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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.
Claims5
A process for preparing alicyclic polycarboxylic acid ester isomer mixtures, which comprises:
- hydrogenating an aromatic polycarboxylic acid ester isomer in the presence of catalyst which comprises at least one precious metal of the 8th transition Group and at least one metal of the 2nd transition Group of the Periodic Table, wherein the alicyclic polycarboxylic acid ester isomer mixture produced comprises above 93 mol % amount of the cis isomer.
Dependencies are inferred from the claim text.