Chemical reactivation method to adhere coatings directly to metal surfaces

Abstract

A method for adhering a coating to a metal substrate is disclosed, which includes exposing a surface of a metal substrate to a solvent, applying a sol-gel treatment to the metal substrate, drying the treated metal substrate, applying a chemical reactivator to the treated metal substrate, and applying a polymer coating to the metal substrate. The method can include cleaning the metal substrate with an alkaline cleaner prior to exposing a surface of a metal substrate to a solvent. The polymer coating may include a polyurethane or a clear polymer coating. An article is disclosed, which includes a metal substrate, coated with a sol-gel coating layer, chemical reactivator layer, and a clear polymer coating.

Dependencies are inferred from the claim text.