CORROSION INHIBITOR IN HYDROGEN SULPHIDE-CONTAINING MEDIA Russian patent published in 2010 - IPC C23F11/04 

FIELD: metallurgy.

SUBSTANCE: inhibitor composition includes active base, emulsifier and solvent; at that, as active base, it contains product of interaction of aminoamides and diamides of carboxylic acids and polyethylenepolyamine with "Nefras heavy fraction" organic solvent, as emulsifier there used is non-ionic surface active substance, and as solvent there used are aliphatic spirits of fraction C₃ - C₇ and aromatic hydrocarbons at the following component ratio, wt %: active base 40-60, non-ionic surface active substance 5-10, aliphatic spirits of fraction C₃ - C₇ 5-20 and aromatic hydrocarbons 10-30.

EFFECT: increasing protection capability of inhibitor, enlarging the range of used raw material, and reducing the cost of production.

5 cl, 1 tbl, 2 ex