Patents Assigned to Aristo Corporation
  • Cold set phenol-formaldehyde resin
    Patent number: 4311619
    Abstract: A phenol-aldehyde resin useful in such applications as a cold-set binder for cores and molds used in the foundry industry and reactive prepolymers used in reaction injection molding compositions produced by the steps of reacting a phenol and aldehyde in a mole ratio of 1 to 1-2.3 in the presence of catalytic amounts of an organic compound of aluminum, zirconium or titanium.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: January 19, 1982
    Assignee: Aristo Corporation
    Inventors: Charles E. Seeney, John F. Kraemer, Larry J. Hoffman