Patents by Inventor Jean Bourguignon

Jean Bourguignon 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).

  • Preparation of tris(hydroxymethyl)aminomethane
    Patent number: 4233245
    Abstract: Tris(hydroxymethyl)aminomethane, an intermediate of organic synthesis, in ystalline form is made by formylation followed by hydrogenation. Nitromethane and formaldehyde in a molar ratio on the order of 1:3 are reacted in a concentrated alcohol medium made up of a 2 to 5% mixture of methylene chloride in methanol, in the presence of 1 to 10 milliequivalents per mole of nitromethane of a solid base catalyst selected from sodium or potassium, with agitation for a period between 3 and 36 hours at a temperature below 50.degree. C.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: November 11, 1980
    Assignee: Societe Chimique de La Grande Paroisse, Azote et Produits Chimiques
    Inventors: Jean Bourguignon, Marcel-Xavier Sion, Michel Moreau