LOW PRESSURE PROCESS FOR THE HYDROGENATION OF DIMETHYL BENZENEDICARBOXYLATES TO THE CORRESPONDING DIMETHYL CYCLOHEXANEDICARBOXYLATES FOR THE HYDROGENATION OF DEMETHYLBENZENE DICARBATELYLATE TO THE CERTIFICATE OF DIMETHYLICO-

摘要

The present invention relates to a process for the preparation of dimethylcyclohexanedicarboxylate, in the presence of palladium and a supported catalyst group having a combination of unique properties, containing a Group VIII second metal selected from nickel, platinum, ruthenium or mixtures thereof, By hydrogenation of the corresponding dimethylbenzene dicarboxylate ester. With the use of the catalyst, the process can be carried out at significantly lower process pressures.