Patents Assigned to Hermann Wiederhold GmbH Corp.
  • Coating compositions
    Patent number: 4379909
    Abstract: Coating lacquers, particularly useful for coating cans, comprise an epoxide resin, a polycarboxylic acid anhydride curing agent, an organic solvent and an accelerator derived from melamine, benzoguanamine or glycoluril. Particularly useful accelerators are the formaldehyde condensates of these materials and their ethers. The coatings are non-toxic and are cured at temperatures lower than conventional.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: April 12, 1983
    Assignees: Hermann Wiederhold GmbH Corp., Imperial Chemical Industries PLC
    Inventors: Hans R. Falkenburg, Siegfried Krause, Robert C. McGuiness