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US 5,215,676 AGranted
Rust and stain removal composition
OwnerJohn A. Stoneinventor
Life of this patent
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Abstract
A chemical composition consisting of a very low pH mixture of hydrochloric and phosphoric acids with organic ammonium chlorides and organic sulfate. The composition is effective for the removal of rust and stains from a variety of surfaces, including metal, concrete, plastic, wood and fiberglass surfaces, and is non-corrosive to metals and relatively harmless to organic materials.
Claims3
A composition consisting essentially of an aqueous solution of the following compounds, each of said components ranging within 5 percent of the stated amounts in terms of percent by weight:
- ______________________________________ Hydrochloric acid 15.0 Phosphoric acid 10.0 Alkyl (50% C.sub.14, 40% C.sub.12, 10% C.sub.16) 0.08 dimethyl benzyl ammonium chloride Dimethylethyl benzyl ammonium chloride 0.10 Octyl decyl dimethyl ammonium chloride 0.05 Dioctyl dimethyl ammonium chloride 0.08 Didecyl dimethyl ammonium chloride 0.08 Triethanolamine lauryl sulphate 0.28 Water Balance ______________________________________
- said composition being useful for the removal of rust and stains resulting from the oxidation of metal.
Dependencies are inferred from the claim text.