Total Chromium-free Primer Coating for Corrosion Protection (RFT-140)

Generate a PDF of this technology.

Generate PDF

Invention Summary


Since the early 1980’s, the use of chromates and other chromium-containing compounds have been subject to stringent regulations due to their recognized carcinogenic properties.  In an attempt to find a substitute for widely used chromium-based primer coating products, scientists at North Dakota State University have invented a novel, chrome–free primer coating with proven anti-corrosive properties on metal substrates. The use of this primer eliminates risks associated with handling toxic and carcinogenic chromium metallic compounds, and alleviates waste disposal hazards. This invention has been proven to be the only technology that protects high strength Aluminum alloys from corrosion, without the need of any chromate pretreatment or pigmentation.

Available Variants of the Primer

  • Glass-like surfaces: UV curable version suitable for glass-like surfaces or where quicker drying is needed 
  • Frequent repainting: Organic version where maintenance operations merit frequent repainting
  • Harder Coatings: Inorganic version suitable for harder coatings 


  • Provides extended corrosion protection to metal substrates surfaces (e.g. Aluminum alloys)
  • Supports non-hazardous manufacturing and operation practices
  • Possesses easy mixing and spraying properties 
  • Compatible with most conventional equipment and environmentally acceptable solvents and pre-treatments
  • Complies with European Union and US Department of Labor - OSHA regulations
  • Does not require any chromate based surface pretreatment, compatible with commercially available Cr-free surface treatment


This technology is the subject of issued US Patent No. 8,828,494 and pending in Canada and Europe and is available for licensing and partnering opportunities.


Henry Nowak, Technology Manager

Inquire about this technology >