Patents Examined by Wyrozebski-Lee Kataryna
  • Amine curable foundry binder system
    Patent number: 6342543
    Abstract: The subject invention relates to a foundry binder system that cures in the presence of a volatile amine curing catalyst. The binder system comprises (a) a compound containing at least two active methylene hydrogen atoms, (b) an organic polyisocyanate (c) a reactive unsaturated acrylic monomer and/or polymer, (d) an oxidizing agent, and preferably (e) an epoxy component. The foundry binders are used for making foundry mixes. The foundry mixes are used to make foundry shapes that are used to make metal castings.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: January 29, 2002
    Assignee: Ashland Inc.
    Inventors: Thomas M. Moy, Raymond Scott Harvey, Edward G. Toplikar, Gary M. Carlson, Don Greg Hendershot