Patents Assigned to PDA Engineering, Inc.
  • Method for providing adhesion to a metal surface
    Patent number: 5089063
    Abstract: A process for treating metal surfaces to obtain improved susceptibility to bonding with adhesive compositions is disclosed. A metal surface is oxidized with a halogen to form a monolayer of halide ions on the surface. The halide ions are then exchanged with azide ions to form an azide monolayer on the metal surface. Upon contact of the treated surface with an adhesive composition, the azide layer may be thermally or photochemically decomposed to form active nitrene species, which react to bond the adhesive composition to the metal surface.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: February 18, 1992
    Assignee: PDA Engineering, Inc.
    Inventors: Larry A. Harrah, Ronald E. Allred, Kennard V. Wilson, Jr.