Patents by Inventor Jacobus Theodorus Jozef Aaldering

Jacobus Theodorus Jozef Aaldering 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 preparing monochloroacetic acid
    Patent number: 7030270
    Abstract: The invention relates to a process for preparing monochloroacetic acid (MCA) comprising a chlorination step and a hydrogenation step and is characterized in that said process comprises the removal of aldehydes from a process stream by oxidation using a peroxycarboxylic acid. A preferred peroxycarboxylic acid comprises peracetic acid. Preferably, the process is carried out at a temperature of 60–100° C., most preferably at atmospheric pressure. Preferably, an about equimolar amount of peroxycarboxylic acid is used relative to the molar amount of aldehydes present in the process stream. A practical choice for the process stream is the acetic acid recycle stream. The invention process provides a clear and colourless MCA end product.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: April 18, 2006
    Assignee: Akzo Nobel N.V.
    Inventors: Cornelis Kooijman, Jacobus Theodorus Jozef Aaldering