Method for applying a coating that acts as an electrolytic barrier and a cathodic corrosion prevention system
AssigneeGeoTech Chemical Company
InventorsSteven Geer, Todd R. Hawkins
Life of this patent
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Abstract
A coating system for ferrous and nonferrous metal substrates that provides cathodic protection from corrosion by coating with inherently conductive polymers and sacrificial anodic metal particles. The coating system is formed by a process that includes premixing of the inherently conductive polymer with the anodic metal particles to form a inherently conductive polymer/metal particle complex.
Claims20
A method of preparing a coating system adapted for use on an associated metallic substrate, the coating system including a resin binder, an inherently conductive polymer, metallic particles which are anodic to the metallic substrate, and a curing agent, the method including the steps of:
- mixing the inherently conductive polymer with the metallic particles to form a blend including an inherently conductive polymer/metal particle complex;
- providing a resin binder selected from the group consisting of water-borne resin systems and solvent-borne resin systems;
- providing a curing agent;
- and,
- mixing the blend, the resin binder, and the curing agent prior to application to the associated metallic substrate.
A method of protecting a metallic substrate from corrosion including the steps of:
- preparing a coating system comprising a resin binder, an inherently conductive polymer, metallic particles which are anodic to the metallic substrate, and a curing agent wherein the inherently conductive polymer is premixed with the metallic particles at a predetermined process temperature for a predetermined period of time to form a inherently conductive polymer/metal particle complex;
- preparing a surface of the metallic substrate for adhesion to the coating system;
- coating the prepared surface with the coating system;
- and,
- curing the coating composition to form a corrosion resistant coating on the prepared surface.
Dependencies are inferred from the claim text.