Patents by Inventor Margaret D. Enderson

Margaret D. Enderson 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).

  • Adjunct for removal of aldehydes from chemical manufacturing production streams during distillative purification
    Patent number: 6074532
    Abstract: A method for improving purification efficiency when distilling off aldehyde contaminants during chemical manufacturing processes by adding a substituted aromatic amine having electron donating group substituents prior to the distillation column. The method is particularly useful for removal of aldehydes such as acrolein, generated as a by-product of acrylonitrile manufacture. Preferred aromatic amines are 2-amino aniline, 3,4-dimethyl aniline and 4-ethyl aniline.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: June 13, 2000
    Assignee: Nalco/Exxon Energy Chemicals, L.P.
    Inventors: Natu R. Patel, Vincent E. Lewis, Margaret D. Enderson