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Non-Chromate Coating Gets Patent

Tuesday, May 24, 2011

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Crosslink, maker of advanced organic materials, has received a patent for a non-chromate corrosion-inhibiting coating.

US Patent No. 7,935,181, for “Corrosion Resistant Coatings with Modified Metal Salts of Corrosion Resisting Organic Anions,” “serves as the foundational intellectual property asset in Crosslink’s Performance Coatings platform focused on corrosion-inhibiting pigments and formulated primers,” the St. Louis-based, privately held company said in a release.  
The company said it had worked since 2001 to develop a suitable alternative to hexavalent chromium as a corrosion-inhibiting pigment for aerospace applications. The result is Corrlink 30A, a non-chromate pigment technology that Crosslink says has repeatedly demonstrated its ability to compete against standard chromate systems and outperform approved non-chromate systems in both outdoor exposure and indoor accelerated tests.

 Crosslink scientist tests smart coatings
A Crosslink scientist tests one of the company’s “smart coatings.”

Several recent third-party validation results have significantly increased the level of visibility of Corrlink 30A, says the company, which also acknowledged project support by the Naval Air Systems Command (NAVAIR). Crosslink is considering various avenues to market its patented technology. 

Materials R&D

Crosslink develops and manufactures customized electroactive polymer coatings for innovative commercial applications. The company is currently developing other materials applications, including

  • Electronic coating formulations and device enhancements;
  • Lighting applications that are durable, lightweight, highly flexible and can be formed into almost any shape;
  • “Smart” anti-corrosion coatings with the ability to sense corrosion signals, then release an additive that shuts down the corrosion process; and
  • Dissipation of static electricity via a transparent, conductive coating for aircraft and electronic clean-room applications.

More information:


Tagged categories: Corrosion protection; Hexavalent chromium; Pigments; Protective coatings

Comment from Tom Schwerdt, (5/25/2011, 1:41 PM)

My experience is that performance described as "competitive" generally translates to "not quite as good as"

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