Glycol-containing acid liquid composition and process for...

Details Glycol-containing acid liquid composition and process for... Glycol-containing acid liquid composition and process for...

C - Chemistry, Metallurgy

23

G

C23G 1/12 (2006.01)

Patent

CA 2084302

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.

On améliore sensiblement la stabilité d'un agent de nettoyage liquide acide d'aluminium comprenant de l'acide minéral, un oxydant, des ions métal polyvalents, ainsi qu'un tensio-actif par la présence dans l'agent de nettoyage de 0,05 à 5 g/l d'un constituant choisi dans le groupe composé de glycol contenant 2 à 10 atomes de carbone par molécule et de mélanges desdits glycols. L'efficacité de l'agent de nettoyage utilisé dans le nettoyage et le décapage primaire d'aluminium et de ses alliages n'est pas altérée et peut même être améliorée par l'addition du constituant de glycol.

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