Patents by Inventor Wolfgana Greb

Wolfgana Greb 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).

  • Decyl alcohol mixtures, phthalic esters obtainable therefrom and their use as placticizers
    Patent number: 5462986
    Abstract: Mixtures of isomeric decyl alcohols prepared by hydroformylation of mixtures of butene-1 and butene-2 in two stages to give aldehyde mixtures, and condensation of the aldehyde mixtures to form an aldol mixture, followed by separation and hydrogenation. The first stage of the hydroformylation proceeds in the presence of rhodium catalysts dissolved in water, the second stage in the presence of cobalt catalysts homogeneously dissolved in the reaction medium. The mixture of isomeric decyl alcohols, when esterified with phthalic acid, yields a mixture of isomeric decyl phthalates which are useful as plasticizers.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: October 31, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Bahrmann, Wolfgana Greb, Peter Heymanns, Peter Lappe, Thomas Muller, Jurgen Szameitat, Ernst Wiebus