Method of protecting a surface
AssigneeEka Nobel AB
InventorsMarek Tokarz, Michael Persson, Roman Kozlowski
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Abstract
The invention concerns a method of protecting a surface of a carbonatic material from corrosion, the method comprising treatment of the material surface with an acidic cationic silica sol, the pH of the sol preferably being from about 4 to about 7. The invention also concerns a new silica sol useful for performing the method and a method of preparing the new silica sol. Further, the invention concerns carbonatic material comprising a surface layer of silica, the surface of the silica particles comprising a polyvalent metal oxide/hydroxide.
Claims9
A method of treating a surface of a carbonatic material, comprising pretreatment of the carbonatic material with an anionic silica sol capable of penetrating deeper than about 2 mm below the surface of the carbonatic material and applying to the surface an acidic cationic silica sol.
Dependencies are inferred from the claim text.