INHIBITOR OF METAL CORROSION Russian patent published in 2009 - IPC C23F11/18 

FIELD: metallurgy.

SUBSTANCE: invention refers to metal protecting from corrosion and can be implemented in production of oil-soluble inhibitors of corrosion of ferrous metals of sulphonate type which are used as additives into motor oils, lubricating-cooling liquids and also as anticorrosion and conservation materials. Inhibitor contains, wt % lanthanum oxide 1.20-9.36; triglycerides of higher carboxylic acids 5.50-70.56; alkylbenzenesulphonic acid (as per 100% of basic substance) 9.92-53.94; alkanolamine 1.65-21.17; lanthanum salt 0.01-0.94; and organic solvent - the rest.

EFFECT: acceleration of process of composition preparing and also upgrading of protective property at water medium effect at presence of corrosion activator such as sodium chloride.

7 cl, 2 tbl