Patents by Inventor Roger De Jaeger

Roger De Jaeger 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).

  • Poly(dichlorophosphazenes)/poly(organophosphazenes) having regulated molecular weights
    Patent number: 5230875
    Abstract: The molecular weights of the poly(dichlorophosphazenes), and of the poly(organophosphazenes) produced therefrom, are controlledly regulated by heating such poly(dichlorophosphazenes) in the presence of an effective molecular weight-regulating amount of phosphorus oxychloride.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: July 27, 1993
    Assignee: Atochem
    Inventors: Roger de Jaeger, Guy Pagniez, Philippe Potin
  • Polycondensation of impure P.sub.2 NOCl.sub.5 into uncrosslinked poly(dichlorophosphazenes) in the presence of PCl.sub.5
    Patent number: 5132389
    Abstract: The polycondensation disrupting effects of the impurities in an impure N-dichlorophosphoryltrichlorophosphazene, P.sub.2 NOCl.sub.5, or oligomer thereof, are avoided by polycondensing such impure P.sub.2 NOCl.sub.5 into a high molecular weight uncrosslinked poly(dichlorophosphazene) in the presence of an effective impurity-inhibiting, polymerization-controlling amount of phosphorous pentachloride, PCl.sub.5.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: July 21, 1992
    Assignee: Atochem
    Inventors: Roger de Jaeger, Ghislaine D'Halluin, Guy Pagniez, Philippe Potin
  • Preparation of polychlorophosphazene
    Patent number: 4810480
    Abstract: Polychlorophosphazene [Cl.sub.2 (O)P[NPCl.sub.2 ].sub.n Cl] is more rapidly produced by polycondensing N-(dichlorophosphoryl)-trichlorophosphazene [P.sub.2 NOCl.sub.5 ] in the presence of a catalytically effective amount of a tertiary amine.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: March 7, 1989
    Assignee: Atochem
    Inventors: Jean-Paul Chambrette, Roger de Jaeger, Philippe Potin
  • Linear polychlorophosphazenes possessing a dichlorothiophosphoryl terminal group, process for preparation of said compounds and utilization thereof
    Patent number: 4554113
    Abstract: Linear polychlorophosphazenes having a dichlorothiophosphoryl terminal group and corresponding to the formulaCl.sub.2 (S)P--NPCl.sub.2 ].sub.n Clwherein n is a number equal to or more than 4.The aforesaid linear polychlorophosphazenes are prepared by polycondensing P.sub.2 NSCl.sub.5 by heating under conditions adequate for liberating PSCl.sub.3.These polymers can be applied to all the uses of the classical polychlorophosphazenes.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: November 19, 1985
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Taher Abou Chakra, Roger De Jaeger
  • Polychlorophosphazenes and process for their preparation
    Patent number: 4544536
    Abstract: The present invention relates to novel polychlorophosphazenes and to the process for their preparation.These polychlorophosphazenes of the general formula:Cl.sub.2 (O)P[NPCl.sub.2 ].sub.n Clare prepared by the polycondensation of P trichloro-N dichlorophosphoryl-monophosphazene with the controlled release of POCl.sub.3 according to the equation: ##STR1## The novel polychlorophosphazenes so obtained are useful as antiflame materials, as coatings, as fertilizers, etc.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: October 1, 1985
    Assignee: Institut Mondial du Phosphate
    Inventors: Roger De Jaeger, Moncef Helioui, Emile Puskaric
  • Novel polychlorophosphazenes and process for their preparation
    Patent number: 4377558
    Abstract: The present invention relates to novel polychlorophosphazenes and to the process for their preparation.These polychlorophosphazenes of the general formula:Cl.sub.2 (O) P [NPCl.sub.2 ].sub.n Clare prepared by the polycondensation of P trichloro-N dichlorophosphoryl-monophosphazene with the controlled release of POCl.sub.3 according to the equation: ##STR1## The novel polychlorophosphazenes so obtained are useful as antiflame materials, as coatings, as fertilizers, etc. . . .
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: March 22, 1983
    Assignee: Institut Mondial du Phosphate
    Inventors: Roger De Jaeger, Moncef Helioui, Emile Puskaric