CORROSION INHIBITOR Russian patent published in 2022 - IPC C23F11/14 

FIELD: corrosion protection.

SUBSTANCE: invention relates to the field of protection of metals from corrosion and can be used in the oil and gas industry to protect equipment and pipelines operated in hydrogen sulfide and carbon dioxide aggressive environments. The equipment and pipeline corrosion inhibitor in hydrogen sulfide and carbon dioxide aggressive media includes: 20-40 wt. % of the active base, a copper complex of imidazoline salt formed by the reaction of polyamine in the form of triethanoltetramine or polyethylene polyamine with carboxylic acid in the form of oleic or stearic and glacial acetic acid and the addition of copper-containing carbon nanostructures with stirring to the resulting imidazoline salt, and 60-80 wt. % of the component reducing the freezing point of the inhibitor, a complete methyl ester of triethanolamine triphosphonate formed by the reaction of triethanolamine with technical phosphoric acid and the addition of methyl alcohol with stirring to the resulting triethanolamine triphosphonate.

EFFECT: reduction in the dangerous effect of the corrosion inhibitor on the health of consumers, a decrease in working concentration.

1 cl, 1 tbl