Patents by Inventor Annick G. Coqueugniot

Annick G. Coqueugniot 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).

  • Unsaturated poly-(carbonate-urethanes) and their applications to photocrosslinking
    Patent number: 4255243
    Abstract: The invention relates, by way of new products, to poly-(carbonate-urethanes) with acrylic or methacrylic acid terminal groups, of the formula ##STR1## in which X represents either hydrogen or the methyl group, R represents a substituted or unsubstituted alkylene, cycloalkylene or arylene radical, R' represents a lower alkylene radical, Z represents a polycarbonate chain and C, H, N and O respectively represent carbon, hydrogen, nitrogen and oxygen.The unsaturated poly-(carbonate-urethanes) according to the invention are obtained by condensing a diisocyanate with a polycarbonate-diol and a lower hydroxyalkyl acrylate or methacrylate.They constitute a base for photocrosslinkable compositions which resist hydrolysis and possess a good adhesion.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: March 10, 1981
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Annick G. Coqueugniot, Robert J. Bruggeman, Marc D. Piteau