The inhibition of the corrosion of mild steel in aqueous acids by in situ polymerization of unsaturated compounds

The inhibition of mild steel corrosion in aqueous acids by combinations of an unsaturated and a peroxy compound is described, with special attention paid to the methacrylonitrile-K2S20 s system. A modified polymethacrylonitrile film is formed on the metal surface which slows down both the anodic and cathodic partial reactions. Inhibiting efficiencies are near 99%.