Particulate metal alloy coating for providing corrosion protection
AssigneeMetal Coatings International Inc.
InventorsEtienne G. Maze, Gilbert L. Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
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Abstract
Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.
Claims19
A coating composition adapted for application to, and curing on, a substrate, which composition provides corrosion resistance as a cured coating on said substrate, the composition comprising:
- zinc alloy in flake form comprising greater than 50 weight percent zinc in the alloy flake, and a balance of less than 50 weight percent of tin in the alloy flake;
- at least one binding agent;
- and
- water in an amount of 20% to 70% based upon the total weight of the composition.
A chromium-free and vanadium-free coating composition adapted for application to, and curing on, a substrate, which composition provides corrosion resistance as a cured coating on said substrate, the composition comprising:
- zinc alloy in flake form comprising greater than 50 weight percent zinc in the alloy flake, and a balance of less than 50 weight percent of aluminum in the alloy flake;
- at least one binding agent;
- and
- water in an amount of 20% to 70% based upon the total weight of the composition.
A chromium-free and vanadium-free coating composition adapted for application to, and curing on, a substrate, which composition provides corrosion resistance as a cured coating on said substrate, the composition comprising:
- zinc alloy in flake form comprising greater than 50 weight percent zinc in the alloy flake, and a balance of less than 50 weight percent of non-zinc metal in the alloy flake, wherein the non-zinc metal is selected from the group consisting of aluminum, magnesium, nickel, cobalt, manganese, and combinations thereof;
- at least one binding agent;
- and
- water in an amount of 20% to 70%, based upon the total weight of the composition.
Dependencies are inferred from the claim text.