GLYCOL-CONTAINING ACID LIQUID COMPOSITION AND PROCGLYCOL-CONTAINING ACID LIQUID COMPOSITION AND PROCESS FOR CLEANING ALUMINUM ESS FOR CLEANING ALUMINUM

摘要

The stability of an acidic liquid cleaner for aluminum comprising mineral acid, oxidant, polyvalent metal ions, and surfactant is substantially improved by the presence in the cleaner of from 0.05 to 5 g /l of a component selected from the group of glycols containing from 2 to 10 carbon atoms per molecule and mixtures of such glycols. The effectiveness of the cleaner for primary cleaning and desmutting of aluminum and its alloys is not impaired and may even be improved by the addition of the glycol component.