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Oxide coated metal pigments and film-forming compositions

  • US Patent No. 9243150
  • Issued: January 26, 2016
  • Status: Active

This invention relates to sacrificial-metal pigments coated with an effective amount of at least one metal oxide or a combination of metal oxides such as a chromium-zirconium oxide, and the process for preparing said coated pigments and combination thereof with film-forming binders for coating metal substrates to inhibit corrosion. The coated sacrificial-metal pigments are electrically active to prevent corrosion of metal substrates that are more cathodic (electropositive) than the metal oxide coated metal pigments.

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