Patents by Inventor Ekkehard Seifert

Ekkehard Seifert 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).

  • Process for producing unsaturated fatty alcohols from lauric oils
    Patent number: 6187974
    Abstract: A process is provided for producing unsaturated fatty alcohols from lauric oils, and includes (a) ester interchange of the deacidified lauric oils with methanol to obtain the overall fatty acid methyl ester mixture; (b) fractionation of the fatty acid methyl ester mixture into a C12-C16-methyl ester (ME) fraction to be used for saturated fatty alcohols, and a C18-ME fraction containing the nearly complete proportion of the unsaturated methyl esters (ME); (c) winterization of the C18-ME fraction in order to separate out the saturated C18-ME component; (d) selective hydrogenation of the unsaturated winterized C18-ME fraction to unsaturated fatty alcohols with an iodine number between 90 and 100; and (e) purifying the crude unsaturated fatty alcohols by distillation.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: February 13, 2001
    Assignee: DHW Deutsche Hydrierwerke GmbH Rodleben
    Inventors: Frank Wieczorek, Gerhard Konetzke, Ekkehard Seifert