Compositions containing heterocyclic corrosion inhibitors

Abstract From the Canadian patent

3-14869/+/MA 1864, Compositions containing heterocyclic corrosion inhibitors Abstract of the Disclosure, New anticorrosive compositions comprise: A) an applicational medium selected from a) surface coatings and b) wholly or partly aqueous non-coating media B) as corrosion inhibitor, an amide, imide or nitrile of an aliphatic- or cycloaliphatic mono-, ditri- or tetra-carboxylic, acid which is substituted in the aliphatic- or cycloaliphatic residue by on or more groups having the formula: I, in which X is oxygen, sulphur or NH; and each R independently, is, hydrogen, alkyl, haloalkyl alkoxy, alkylthio, alkylsulphonyl, cycloalkyl phenyl, alkylphenyl, phenylalkyl, halogen cyano, nitro, hydroxy, …