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US 11,959,179 B2Granted
Corrosion control coating
AssigneeEwald Dörken AG
InventorsMarcel Roth, Gerhard Reusmann, Sandra Böhm
Life of this patent
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Abstract
The invention relates to a coating system, more particularly a corrosion control coating system, for generating cathodic corrosion protection on a metallic substrate, comprising at least two layers, and also to a method for producing it and to a substrate coated with the coating system.
Claims16
Coating system, more particularly corrosion control coating system, for generating cathodic corrosion protection on a metallic substrate, comprising at least two compositions,
- characterized in that the coating system comprises:
- (a) a first composition for forming a first layer in the form of an anhydrous cathodic corrosion control composition configured to crosslink on exposure to moisture at temperatures of less than 100° C.,
- wherein the first cathodic corrosion control composition comprises at least one non-aqueous solvent, and
- (b) a second composition for forming a second layer in the form of an aqueous-based coating composition;
- wherein the second composition comprises hydrophilic, inorganic, or organic, polymer compounds;
- wherein the second composition comprises ionic constituents in amounts of 0.1 to 5 wt %, based on the second composition, and/or
- wherein the hydrophilic, inorganic or organic polymeric compound comprises ionic fractions;
- and
- wherein the coating system is configured for curing at temperatures of 20° C. to 100° C.
6 more elements
Dependencies are inferred from the claim text.