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US 11,028,489 B2Granted
Surface treatment composition and methods for use
AssigneeCorrosion Exchange LLC
InventorLoren L. Hatle
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure provide a surface treatment composition and methods for using same. The composition for removing contaminants from a metallic surface, can include 3 wt % to 40 wt % of at least one bifunctional alkaline compound, 0.03 wt % to 10 wt % of at least one oxidizer comprising a metal salt, and water, where all weight percentages are based on the total weight of the composition.
Claims13
An alkaline composition for removing contaminants from a metallic surface, consisting of:
- at least one bifunctional alkaline compound that comprises a tertiary amine and a hydroxyl group;
- at least one oxidizer derived from a metal salt;
- up to 1 wt % of a surfactant;
- and
- water comprising less than 100 ppm chlorine, wherein the composition has a pH of about 9 to about 11.5 and all weight percentages are based on the total weight of the composition.
2 more elements
An alkaline composition having a pH of about 9 to about 12 for removing contaminants from a metallic surface, consisting of:
- dimethylaminoethanol;
- sodium persulfate;
- up to 1 wt % of a surfactant;
- and water, wherein all weight percentages are based on the total weight of the composition.
1 more element
Dependencies are inferred from the claim text.