Corrosion protection of metals using aromatic amine compound(s)

A method of protecting a metal article from corrosion under prolonged exposure to ambient atmospheric conditions which cause such corrosion, wherein the method comprises coating the metal article, before it has been subjected to corrosion by such corrosive atmospheric conditions, with an adherent organic coating which does not exude corrosive acids, which organic coating comprises an organic resin and an effective amount of at least one aromatic amine compound containing a p-phenylenediamine moiety which is an N-alkyl substituted aminodiphenylamine, which is not an epoxy crosslinking agent, but which is capable of being oxidized in air, or at least one air oxidation product thereof, or a mixture of at least one aromatic amine and at least one air oxidation product thereof.

A method of protecting a metal article from corrosion under prolonged exposure to ambient atmospheric conditions which cause such corrosion, wherein the method comprises coating the metal article, before it has been subjected to corrosion by such corrosive atmospheric conditions, with an adherent organic coating which does not exude corrosive acids, which organic coating comprises an organic resin and an effective amount of at least one aromatic amine compound containing a p-phenylenediamine moiety which is a benzenediamine compound, which is not an epoxy crosslinking agent, but which is capable of being oxidized in air, or at least one air oxidation product thereof, or a mixture of at least one aromatic amine and at least one air oxidation product thereof.

A coating composition which does not exude corrosive acids, for protecting a metal article from corrosion, under prolonged exposure to ambient atmospheric conditions which cause such corrosion, which coating comprises at least one organic resin and an effective amount of at least one aromatic amine compound, which is not an epoxy crosslinking agent and which is an aminodiphenylamine, containing a p-phenylenediamine moiety, which is capable of being oxidized in air, or at least one air oxidation product thereof, or a mixture of at least one said aromatic amine and at least one air oxidation product thereof.

A coating composition which does not exude corrosive acids, for protecting a metal article from corrosion, under prolonged exposure to ambient atmospheric conditions which cause such corrosion, which coating comprises at least one organic resin and an effective amount of at least one aromatic amine compound, which is not an epoxy crosslinking agent and which is an N-alkyl substituted aminodiphenylamine, containing a p-phenylenediamine moiety, which is capable of being oxidized in air, or at least one air oxidation product thereof, or a mixture of at least one said aromatic amine and at least one air oxidation product thereof.

A coating composition which does not exude corrosive acids, for protecting a metal article from corrosion, under prolonged exposure to ambient atmospheric conditions which cause such corrosion, which coating comprises at least one organic resin and an effective amount of at least one aromatic amine compound, which is not an epoxy crosslinking agent and which is a benzenediamine compound, containing a p-phenylenediamine moiety, which is capable of being oxidized in air, or at least one air oxidation product thereof, or a mixture of at least one said aromatic amine and at least one air oxidation product thereof.