| abstract |
Process for the hydrogenation of oligo- and / or polyesters that can be obtained by esterification of a solution of dicarboxylic acid with a diol or mixture of diols, in which case a base selected from the group consisting of alcoholate is dosed from the ester mixture produced lithium, potassium and sodium, and in which case hydrogenation is carried out by means of a catalyst molded body whose precursor can be produced according to the process in which (i) an oxide material comprising copper oxide, oxide of aluminum and at least one of the oxides of lanthanum, tungsten, molybdenum, titanium, zirconium or iron, (ii) to the oxide material is added powdered metallic copper, copper flakes, pulverulent cement, graphite or a mixture thereof (iii ) the resulting mixture of (ii) is molded into a molded body in which case the oxide material can be obtained by simultaneous or successive precipitation of the active copper component, and The aluminum component and the component at least one of the oxides of lanthanum, tungsten, molybdenum, titanium or zirconium and subsequent drying and calcination and after molding according to step (iii) the molded body of the catalyst is calcined once more. |