| abstract |
The present invention relates to a process for hydrogenating oligo- and polyesters obtained by esterifying DCL with diols or diol mixtures, in which case the hydrogenation is carried out in the presence of a catalyst, the precursor of the catalyst being Contains at least one oxide of copper oxide, aluminum oxide and lanthanum, iron, tungsten, molybdenum, titanium or zirconium, and contains oligo- and polyesters of adipic acid and 6-hydroxycaproic acid as main components It relates to a process for preparing 1,6-hexanediol by catalytic hydrogenation of ester mixtures and esterification of DCL with diols, in which case in particular 1,6-hexanediol or diol mixtures are obtained. |