Patent ID: 11959179
Assignee: EWALD DöRKEN AG
Field: Basic materials chemistry (Chemistry)
Classification: CPC B  C | IPC A  B  C

Claim 13:
14. Method for producing a coating system, more particularly a corrosion control coating system, according to claim 1, for generating cathodic corrosion protection on a metallic substrate, the method comprising:
(A) applying a first substantially anhydrous coating composition to a metallic substrate to form a first layer, wherein the coating composition crosslinks upon exposure to moisture at temperatures of less than 100° C. to generate a cathodic corrosion control coating, and
(B) applying a second coating composition to the first layer before the first layer is cured, wherein the second coating composition is an aqueously based coating comprising hydrophilic, inorganic or organic, polymeric 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 after applying the second coating composition the first coating is crosslinked on exposure to moisture.