Patents Assigned to Noverox AG.
  • Rust transforming composition
    Patent number: 4086182
    Abstract: A surface film of oxide on iron or steel is converted to a corrosion-resistant film by treatment with a composition comprising an aqueous dispersion or emulsion of a synthetic binding agent and a complexing agent for the iron which is a polymeric esterification product of an aromatic oxycarboxylic acid containing phenolic groups and a substance selected from the group consisting of acid anhydrides and substituted acid anhydrides. Advantageously the composition further comprises a solution of a synthetic plastics material.
    Type: Grant
    Filed: November 23, 1976
    Date of Patent: April 25, 1978
    Assignee: Noverox AG.
    Inventors: Erich Hengelhaupt, Lothar Peier