Patents by Inventor Rabih Jaouhari

Rabih Jaouhari 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 isocyanates and of isocyanate derivatives
    Patent number: 4749806
    Abstract: The present invention relates to a process for the synthesis of isocyanates and of isocyanate derivatives. Isocyanates are obtained by reacting an organic halide with a metal cyanate in an organic medium in the presence of a catalyst consisting of a complex of nickel with at least one organic ligand, in which complex the nickel is in the zero oxidation state.A carbamate or a urea, respectively, are obtained by a subsequent reaction with a hydroxy compound or a primary or secondary amine.Isocyanates and their derivatives are used especially either as refined synthesis agents for the production of pesticides and medications, or as monomers or comonomers for the preparation of many macromolecular compounds.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: June 7, 1988
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Igor Tkatchenko, Rabih Jaouhari, Michel Bonnet, Gordon Dawkins, Serge Lecolier
  • Process for the synthesis of isocyanates and of isocyanate derivatives
    Patent number: 4709087
    Abstract: The present invention relates to a process for the synthesis of isocyanates and of isocyanate derivatives. Isocyanates are obtained by reacting an organic halide with a metal cyanate in an organic medium in the presence of a catalyst consisting of a complex of nickel with at least one organic ligand, in which complex the nickel is in the zero oxidation state.A carbamate or a urea, respectively, are obtained by a subsequent reaction with a hydroxy compound or a primary or secondary amine.Isocyanates and their derivatives are used especially either as refined synthesis agents for the production of pesticides and medications, or as monomers or comonomers for the preparation of many macromolecular compounds.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: November 24, 1987
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Igor Tkatchenko, Rabih Jaouhari, Michel Bonnet, Gordon Dawkins, Serge Lecolier