Patents by Inventor Bernd Graml

Bernd Graml 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).

  • Additive for heat-hardenable epoxide resin masses
    Patent number: 5001212
    Abstract: The present invention provides an additive for heat-hardenable epoxide resin masses, wherein the additive contains or consists of adducts and/or reaction products of (a) imidazoles of the general formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which can be the same or different, are hydrogen atoms, alkyl, alkenyl or alkynyl radicals containing up to 3 carbon atoms or phenyl radicals, said radicals being unsubstituted or substituted, and (b) at least one aromatic hydroxy acid.The additives according to the present invention can be used alone as hardeners or, in combination with other latent hardeners, as accelerators.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: March 19, 1991
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Benedikt Hammer, Bernd Graml