Patents by Inventor Knut Popp

Knut Popp 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).

  • Patent number: 4481146
    Abstract: The invention relates to a process for the preparation of an ethyl ester from ethanol-containing mixtures of aliphatic alcohols, which comprises esterifying the alcohols with a carboxylic acid in the presence of an acid catalyst in a distilling column and separating in the same column the ethyl ester continuously from the ester mixture obtained. To this purpose, the alcohol mixture is introduced into the sump and the carboxylic acid is introduced into the column at a point located in the central part and the ethyl ester as well as the water formed during esterification are withdrawn continuously at the top of the column and the higher esters are withdrawn continuously at the sump.
    Type: Grant
    Filed: September 29, 1981
    Date of Patent: November 6, 1984
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ernst I. Leupold, Hans-Joachim Schmidt, Knut Popp