Patents by Inventor Anna G. van de Bovenkamp-Bouwman

Anna G. van de Bovenkamp-Bouwman 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 the synthesis of citraconimides
    Patent number: 5329022
    Abstract: The present invention relates to an improved synthesis method for the making of citraconimides wherein a citraconic anhydride is reacted with 0.5 to 2.0 equivalents of at least one amine salt. This process may be carried out in a solvent and generally leads to excellent yields of the citraconimides with high selectivity and easy purification. The present inventional so relates to a process for the production of citraconic anhydride from itaconic anhydride with an amine or phosphine catalyst and in a cosolvent.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: July 12, 1994
    Assignee: Akzo America Inc.
    Inventors: Auke G. Talma, Hendrika P. M. Hooft, Anna G. van de Bovenkamp-Bouwman