Water-soluble composition as a coating for metal surfaces in the form of dry films, the sealing manner with respect to atmospheric corrosion are

摘要

The invention concerns a water soluble composition for temporarily coating, in the form of a dry film, metal surfaces sensitive to atmospheric oxidation containing at least a carboxylic acid characterised in that it comprises at 20 wt.% of a combination of at least one saturated linear carboxylic monoacid and at least one unsaturated linear carboxylic acid, in the form of alkaline, alkaline-earth or amine salts, the carbon chain of each acid comprising an odd number of carbon atoms ranging from 5 to 21 and optionally at least 0.5 wt.% of a triazole derivative.