| abstract |
Mixtures of isomeric pentanoic acids are prepared by hydroformylation of butene-1 / butene-2 mixtures to give aldehyde mixtures and oxidation of the separated aldehyde mixtures. The hydroformylation takes place in the presence of rhodium catalysts which are dissolved in water. The mixture of isomeric C5 monocarboxylic acids, esterified with dihydric or polyhydric alcohols, gives a mixture of isomeric esters which are used as lubricants for refrigerant compressors which are operated with chlorine-free, partially fluorinated hydrocarbons as refrigerants. |