Compositions for cleaning aluminum
OwnerJohn A. Dingessinventor
Life of this patent
Estimating the term…
Abstract
An aluminum cleaning composition and method of cleaning aluminum cooking articles. The composition comprises 0.6 to 3.5 parts by weight of a strong alkali metal hydroxide, from about 0.08 to 0.2% of calcium ion, from about 0.2 to about 3.0 parts by weight of sucrose, 0.5 to 1.5 parts by weight of citrate ion from sodium citrate, and up to about 5% of an organic antifoaming agent. A surfactant, preferably nonionic, may be added to or used with the composition.
Claims7
An aluminum cleaning composition comprising, in combination, from about 0.6 to 3.3 parts by weight of a strong alkali metal hydroxide, from about 0.08 to about 0.18% of calcium ion from a calcium ion donor, from about 0.2 to about 3.0 parts by weight of sucrose, from about 0.5 to about 1.5 parts by weight of a citrate ion from sodium citrate, and up to about 5% of an organic antifoaming agent, with the balance being water.
A method of cleaning an aluminum surface encrusted with cooked on grease, oil and protein residues, said method comprising immersing an article so coated into a solution comprising from about 0.6 to about 3.3 parts by weight of a strong alkali metal hydroxide, from about 0.08 to about 0.18% of calcium ion from a calcium ion donor from about 0.2 to about 3.0 parts by weight of sucrose, from about 0.5 to about 1.5 parts by weight of a citrate ion from sodium citrate, and up to about 5% of an organic antifoaming agent, with the balance being water, exposing the coated surface to said composition for from about 1 hour to about 24 hours, and removing the article from said solution.
Dependencies are inferred from the claim text.