Patents by Inventor Andrew P. Stamegna

Andrew P. Stamegna 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).

  • FLUORINE CONTAINING GRAFT COPOLYMER COATING COMPOSITION
    Publication number: 20120302693
    Abstract: The present disclosure relates to a coating composition comprising a fluoropolymer, especially a fluorine containing graft copolymer. A dried and cured layer of the coating composition can provide a substrate with an easy to clean surface having a high water contact angle and good recoat adhesion.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 29, 2012
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: ROBERT C NAHAS, Andrew P Stamegna
  • Solvent-borne two component modified epoxy/polyamine coating composition
    Patent number: 7169862
    Abstract: A coating composition comprising a film forming binder of a. a modified polyepoxy resin comprising the reaction product of a polyepoxide resin, dimer fatty acids and an organic polyisocyanate, wherein the modified polyepoxide resin has a weight average molecular weight of 1000 to 50,000; and b. at least one amino functional silane crosslinking agent; wherein the coating composition preferably contains pigments and has excellent adhesion to aluminum and aluminum alloy substrates and provides excellent corrosion resistance and is particularly useful as a primer for such substrates.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: January 30, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Cesar A. S. Rodrigues, Luis Henrique De Almeida Ferrari, Andrew P. Stamegna, Valentina Gordin
  • Acrylourethane reaction product
    Patent number: 4711929
    Abstract: The ungelled reaction product of an acrylic prepolymer, a diol and a diisocyanate, reacted in the presence of a small amount of a monoalcohol to prevent gelling, is an acrylourethane polymer which may be acid modified and is useful in high solids coating compositions.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: December 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Andrew P. Stamegna, Clifford H. Strolle
  • Acrylourethane reaction product
    Patent number: 4659780
    Abstract: The ungelled reaction product of an acrylic prepolymer, a diol and a diisocyanate, reacted in the presence of a small amount of a monoalcohol to prevent gelling, is an acrylourethane polymer which may be acid modified and is useful in high solids coating compositions.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: April 21, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Andrew P. Stamegna, Clifford H. Strolle
  • Staged copolymerization of polyesters
    Patent number: 4442269
    Abstract: Polyester copolymers prepared by a non-equilibrium, two-stage process conducted without external catalysts have relatively high polydispersity and low viscosity, permitting the preparation of high solids paints.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: April 10, 1984
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Eugene G. Sommerfeld, Andrew P. Stamegna