CORROSION INHIBITOR IN HYDROGEN SULPHIDE AND CARBON DIOXIDE CONTAINING MINERALISED MEDIA Russian patent published in 2014 - IPC C23F11/167 

FIELD: chemistry.

SUBSTANCE: inhibitor contains a C₅-C₂₀ fatty acid, a nitrogen-containing compound in the form of oxyethylated alkyl(or phenol)methylphosphite of N-methylalkylammonium, which is a product of reaction of oxyethylated alkyl(or phenol)methylphosphite with alkylamines, or a product of reaction of primary aliphatic amines with industrial dimethyl phosphite, a nonionic surfactant - oxyethylated monoalkylphenols and a solvent, which is a mixture of an aliphatic alcohol and an aromatic solvent, wherein the inhibitor further contains a product of reaction of alkyl-substituted pyridines with C₈-C₁₆ alkylbromides, with the following ratio of components, wt %: fatty acid 4-18; nonionic surfactant 6-14; nitrogen-containing compound 3-14; product of reaction of alkyl-substituted pyridines with C₈-C₁₆ alkylbromides 1-6 and solvent - the balance.

EFFECT: inhibitor is effective, can be used in low temperature conditions and has wide local raw material base.

3 cl, 1 tbl, 19 ex