Patents by Inventor Gilberte Ndebeka

Gilberte Ndebeka 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).

  • Bulk anionic polymerization process using an alkali metal amide and the salt of the same alkali metal with a hydroxylic compound
    Patent number: 4243787
    Abstract: The invention relates to a process for the anionic polymerization and copolymerization of vinyl, dienic and heterocyclic monomers.According to the invention, the process consists in carrying out the reaction in the presence of an initiator consisting of a molecular combination of an alkali metal amide and the salt of the same alkali metal with at least one hydroxylic compound and in the absence of solvent. The initiator can be prepared by intimately mixing its constituents or in the presence of a solvent of low polarity which is subsequently evaporated off, or in situ in the monomer.Application to the synthesis of special or widely used polymers and copolymers.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: January 6, 1981
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Sylvie L. Boileau, Paul J. Caubere, Gilberte Ndebeka, Serge L. Lecolier, Serge F. Raynal