SOLUTION DE NETTOYAGE COMPRENANT UN MÉLANGE DE TENSIOACTIFS NON IONIQUES DE POLYOXYALKYLÈNE POUR LE NETTOYAGE DE SURFACES MÉTALLIQUES

摘要

Cleaning solution for cleaning and / or wetting metal surfaces, comprising: - at least one acid, - a first surfactant, which is an alkyl-poly(ethyleneglycol-co-propyleneglycol)-ether having a cloud point of ≤ 25°C, - a second surfactant, which is selected from the group consisting of i) an alkyl-poly(ethyleneglycol-co-propyleneglycol)-ether having a cloud point of ≥ 30°C, ii) an alkyl-polyethyleneglycol-ether having a cloud point of ≥ 45°C wherein the cloud points are determined according to European Standard EN 1890:2006, item 8.2 of German Version, with the modification that 10 wt% H2SO4 is used as solvent and that the concentration of the surfactant is 1000 mg/L.