Patent No. U.S. 7,662,241 B2
Wayne Pigment Corp. has received a patent for a process for protecting an aluminum substrate or a steel substrate against corrosion comprised of providing an aluminum surface to be protected, applying to the surface a protective composition comprised of a pigment grade corrosion inhibitor composition, the protective composition being formed by reacting an organic compound from a group consisting of di-mercapto and poly-mercapto derivatives and their derivatives, with a cationic species selected from a group consisting of Bi(III), Co(II), Cd(II), Ag(I), Sb(III), Ni(II), Li(I), La(III) and Pr(IID). The protective corrosion inhibitor composition has a limited solubility in water of between approximately 0.01 and 1,000 mmoles/ per liter of water, whereby the corrosion inhibitor is capable of preventing corrosion for at least 2000 hours in salt spray exposure conditions.
Wayne Pigments Patents Corrosion Inhibitor
Published June 1, 2010
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