Patents by Inventor Eberhard von Mulmann

Eberhard von Mulmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mixtures of isomeric pentanoic acids, esters prepared therefrom, and their use as lubricants
    Patent number: 5410072
    Abstract: Isomeric mixtures of pentanoic acids are prepared by subjecting butene-1/butene-2 mixtures to hydroformylation to form aldehyde mixtures, followed by oxidation of the aldehyde mixtures which have been separated off from the reaction product. The hydroformylation is carried out in a heterogeneous system in the presence of rhodium catalysts which are dissolved in water. The mixture of isomeric 5 carbon monocarboxylic acids produced, when esterified with polyhydric alcohols, yields mixtures of isomeric esters which are useful as lubricants for refrigerant compressors operated with chlorine-free, at least partly fluorinated hydrocarbons as the refrigerant.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: April 25, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Bahrmann, Wolfgang Greb, Georg Dambkes, Peter Heymanns, Heinz Kalbfell, Peter Lappe, Helmut Springer, Eberhard von Mulmann, Jurgen Weber, Ernst Wiebus, Carl D. Frohning, Harald Kappesser