SYNTHESIS OF A MULTIFUNCTIONAL CORROSION INHIBITOR FROM THE REACTION OF HEXAMETHYLENEDIAMINE AND OLEIC ACID IN A RATIO OF 1:2 AND ITS INVESTIGATION AS AN INHIBITOR FOR CO2 CORROSION

Hexamethylenediamine and oleic acid were mixed in a 1:2 mol ratio. For three hours, the reaction was carried out at 140℃. The process continues with the separation of water using a Dean-Stark unit. The synthesised amide compound has a 95.4% yield. The impact of an amide compound synthesised on the basis of hexamethylenediamine and oleic acid in a 1:2 mole ratio on the corrosion process of C1018 steel in a carbon dioxide atmosphere was investigated. The corrosion protection properties of the compound were studied, and it was established that the amide compound had a corrosion protection effect of 40%, 76%, and 97.5% at concentrations of 10, 25, and 50 mg/l, correspondingly. The time-based dependence of metal loss has been explored as a consequence of the study. Metal loss results begin to stabilise after the first hour of the experiment at concentrations of 25 and 50 mg/l of amide, and metal loss is totally stabilised after 5 hours.