Patents by Inventor David Richard Egan

David Richard Egan 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).

  • Amine terminated tougheners for epoxy resin based adhesives and materials
    Publication number: 20090099312
    Abstract: An uncured liquid epoxy composition comprises a liquid epoxy resin and a) a tri-amine terminated polyether toughener optionally adducted with an epoxy resin, or a mixture of said tri-amine terminated polyether toughener optionally have an epoxy adduct thereon with a core-shell copolymer or with an epoxidized carboxyl terminated butadiene-acrylonitrile copolymer; or b) an amine terminated tri-block polyether toughener optionally adducted with an epoxy resin, or a mixture of said amine terminated tri-block polyether toughener optionally having an epoxy adducted thereon with a core-shell copolymer or with an epoxidized carboxyl terminated butadiene-acrylonitrile copolymer. The uncured toughener composition need not contain any high molecular weight polymers or material and is utilized as a low viscosity paste adhesive having good storage stability, and when cured has very good low temperature peel strength at minus 40° C.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Inventors: Carl Duane Weber, David Richard Egan
  • S,S?-bis-(?, ??—disubstituted—??—acetic acid)—trithiocarbonates and polymers thereof for toughening thermosetting resins
    Patent number: 6894116
    Abstract: A toughener comprising a trithiocarbonate polymer having an epoxy end group is described which is utilized with various thermosettable polymers such as epoxy, polyurethane, and the like. A toughened composition is made by curing the thermosettable polymer and the toughener utilizing various curing agents.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: May 17, 2005
    Assignee: Noveon IP Holdings Corp.
    Inventors: John Ta-Yuan Lai, Carole Angele Lepilleur, Carl Duane Weber, David Richard Egan, Deborah Susan Filla
  • S,s' -bis-(alpha, alpha' - disubstituted - alpha" - acetic acid) - trithiocarbonates and polymers thereof for toughening thermosetting resins
    Publication number: 20030187138
    Abstract: A toughener comprising a trithiocarbonate polymer having an epoxy end group is described which is utilized with various thermosettable polymers such as epoxy, polyurethane, and the like. A toughened composition is made by curing the thermosettable polymer and the toughener utilizing various curing agents.
    Type: Application
    Filed: August 15, 2002
    Publication date: October 2, 2003
    Inventors: John Ta-Yuan Lai, Carole Angele Lepilleur, Carl Duane Weber, David Richard Egan, Deborah Susan Filla