Cleanser for anodized surfaces of aluminum and alloys thereof and method for using same

摘要: This invention relates to an improved process for cleaning anodized surface of aluminum or alloy thereof where a agent is applied the and then removed after sufficient period contact, wherein improvement comprises applying at ambient temperature thin film composition comprising acid solution consisting essentially of: (a) from about 3 30 percent by weight, based upon total weight solution, nitric acid, calculated as 65% aqueous solution; (b) 0.1 20 partial esters phosphoric acid; (c) 0.3 phosphonocarboxylic with complexing action; (d) 0.5 nonionic and/or anionic tensides; (e) 0 solubilizers organic solvents; (f) 40 90 water, said having pH less than 2, rinsing off water.