Method for treating oxidized steel surfaces
OwnerGeorge T. Shuttinventor
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Abstract
A method of treating a corrosible steel substrate having a coating of oxidized steel thereon, which comprehends applying to the oxidized steel coating a solution of an alkyl silicate in quantity sufficient to saturate the oxidized steel coating, permitting the solution to cure by hydrolysis, and thereupon to apply a topcoating. The solution may be partially prehydrolyzed as within the range of 40-98% and may contain dry particulate matter which is water insoluble and having a coloration sufficient for visual detection so as to readily indicate the state of saturation of the oxidized steel coating. Furthermore, the solution may additionally contain water soluble corrosion inhibiting compounds for producing ions which will react with the anodic steel substrate.
Claims10
A method for treating a corrosible steel substrate having a rusted oxidized layer thereon comprising applying to said oxidized layer a solution of a partially cured alkyl silicate wherein the alkyl group of said alkyl silicates contains 1 to 8 carbon atoms and zinc, if present, in quantities less than required to cause electrolytic action with the metal substrate, said solution being in such quantity as to saturate the oxidized layer, permitting the applied solution to cure for developing a film stably maintaining the rusted oxidized layer upon said substrate, and then applying a top coating upon said cured silicate film.
Dependencies are inferred from the claim text.