Patents by Inventor Gilberte N. N'Debeka

Gilberte N. N'Debeka 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).

  • Anionic polymerization initiators based on alkali metal amides in combination with alkali metal salts and anionic polymerization process using these initiators
    Patent number: 4292421
    Abstract: The invention relates to an anionic polymerization process using an initiator based on an alkali metal amide in combination with an alkali metal salt, as well as to the polymers obtained by this process.The polymerization process according to the invention is characterized in that an initiator is used which results from the combination of an alkali metal amide selected from the group comprising sodium amide, potassium amide or lithium amide and an alkali metal salt of which the cation is selected from the group comprising potassium, lithium or sodium, the anion being selected from the group comprising the thiocyanate, nitrite, cyanide and cyanate anions.These initiators make it possible to carry out the anionic polymerization or vinyl, heterocyclic and diene monomers in order to obtain special polymers or widely used polymers, with great adaptability and under advantageous economic conditions.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: September 29, 1981
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Sylvie L. Boileau, Paul J. Caubere, Serge F. Raynal, Serge L. Lecolier, Gilberte N. N'Debeka