Alicyclic polycarboxylic acid ester mixture, useful as a plasticizer, contains at least two isomers with respect to the position of the ester groups on the ring system

摘要

An alicyclic polycarboxylic acid ester mixture (I) contains at least two isomers with respect to the position of the ester groups on the ring system such that the trans-isomer content is greater than 10 mol. %. Independent claims are included for: (i) a process for the catalytic hydrogenation of aromatic polycarboxylic acids or their derivative with hydrogen in the presence of a catalyst comprising iron, cobalt and/or nickel together with a Group 2,3,4,5 and/or 6 metal; and (ii) Mixtures (II) of polymers and the alicyclic polycarboxylic acid mixture (I).