METHOD OF INHIBITING CORROSION USING A COMPOSITION OF QUATERNARY AMMONIUM SALTS CONTAINING NON-HALOGEN ANIONS

摘要

Disclosed are quaternary ammonium carbonates, bicarbonates, and mixtures thereof as anti-corrosive agents. The invention relates to a method for inhibiting the corrosion of metal surfaces by applying a composition containing one or more quaternary ammonium carbonate or bicarbonate. The disclosure is also directed to anti-corrosive coating for metal substrates containing these compounds, to metal substrates having these anticorrosive coatings, and to aqueous cleaning solutions containing these compounds.

主权项

1. A method for inhibiting corrosion of a metal substrate comprising the step of contacting the substrate with a composition comprising:
(a) a quaternary ammonium carbonate of formula wherein R1 is an optionally aryl-substituted C1-20 alkyl group, and R2 is an optionally aryl-substituted C1-20 alkyl group, and, optionally, a quaternary ammonium bicarbonate of formula wherein R1 and R2 are as defined above; and (b) optionally, a solvent.