Patents by Inventor Marcel-Xavier Sion

Marcel-Xavier Sion 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).

  • Patent number: 4241226
    Abstract: The known compound 2-nitro-2-methyl-1-propanol is prepared by formylation, n crystalline form of high purity and in high yields, by reacting 2-nitropropane and formaldehyde in a molar ratio between 0.9:1 and 1.1:1, in a concentrated medium and in the presence of 1 to 10 milli-equivalents of an inorganic basic catalyst per mole of 2-nitropropane, with agitation, at a temperature between 40.degree. and 58.degree. C.; the pH of the reaction medium being between 7 and 11.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: December 23, 1980
    Assignee: Societe Chimique de la Grande Paroisse, Azote et Produits Chimiques
    Inventors: Guy Adrian, Marcel-Xavier Sion, Andre Benattar
  • 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
  • Patent number: 4067905
    Abstract: 2-Amino-n-butanol is prepared by condensing 1-nitropropane with formaldehyde in an aqueous medium in the presence of a phase transfer agent which acts both as a basic catalyst and as a surfactant, and the resulting 2-nitro-n-butanol obtained is subjected to catalytic hydrogenation using a hydrogenating mixture consisting of hydrogen and nitrogen at a pressure of 8 to 12 bars.
    Type: Grant
    Filed: January 20, 1976
    Date of Patent: January 10, 1978
    Assignee: Societe Chimique de la Grande Paroisse, Azote et Produits Chimiques
    Inventors: Guy Adrian, Marcel-Xavier Sion, Andre Benattar