Patents by Inventor Mathieu J. A. Roberts

Mathieu J. A. Roberts 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 recovering .alpha.-aminoalcohols
    Patent number: 5087753
    Abstract: Process for recovering .alpha.-aminoalcohols by extraction from aqueous solutions, in which process an aromatic aldehyde is added at elevated pH to an aqueous solution of an aminoalcohol in an at least equimolar amount in respect of the aminoalcohol, the resulting mixture is converted with formation of the Schiff base of the aldehyde and the aminoalcohol and the aqueous solution is subsequently extracted using a water-immiscible organic solvent, upon which the Schiff base in the resulting extract is hydrolized and the .alpha.-aminoalcohol or a salt thereof is recovered.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: February 11, 1992
    Assignee: Stamicarbon B.V.
    Inventors: Wilhelmus H. J. Boesten, Catharina H. M. Schepers, Mathieu J. A. Roberts