Patent ID: 8273412

Claim:
A process for applying a corrosion preventive layer to a metallic surface comprising treating said surface with a formulation comprising a binder, a pigment and/or a filler and a corrosion preventive agent, wherein said corrosion preventive agent is at least one compound containing thioamide groups of the general formula (I) —C(S)NR 1 R 2 , selected from the group of (D1) thioamides of the general formula (II) R 4 n —R 3 —C(S)NR 1 R 2 , and (D2) thioamides containing at least 2 thioamide groups, wherein n is a natural number from 1 to 5, and the radicals R 1 , R 2 , R 3 and R 4 have the following definitions: R 1 and R 2 each independently are H or a linear or branched, optionally substituted, alkyl radical having 1 to 20 carbon atoms, R 3 is an (n+1)-valent hydrocarbon radical having 1 to 30 carbon atoms, and R 4 is a functional group.