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US 4,289,638 AGranted
Metal treatment
OwnerBruce E. Svensoninventor
Life of this patent
Estimating the term…
Abstract
A rust treatment and inhibitor preparation includes a strong acid, such as concentrated phosphoric acid, within an emulsion including wool fat or grease and derivatives. Solvents, stabilizers and absorbing agents are provided in the emulsion. The emulsion enables the acid to remove rust and protect the treated surface from further corrosion without affecting the surface finish.
Claims3
A rust treatment preparation comprising:
- from about 5% to about 35% V/V of about 95% concentrated phosphoric acid,
- from about 25% to about 35% W/V of an emulsifier selected from the group consisting of anhydrous wool fat, anhydrous wool grease, hydrous wool fat, hydrous wool grease and derivatives thereof,
- from about 10% to about 15% W/V of a stabilizer-absorbing agent;
- and
- a solvent selected from the group consisting of methylated and industrial spirits.
2 more elements
Dependencies are inferred from the claim text.