| 摘要 |
FIELD: corrosion protection. ^ SUBSTANCE: invention provides corrosion inhibitor, which can be used for protection of metals against hydrogen sulfide, carbonic acid, and hydrochloric acid corrosion and sulfate-reducing bacteria grow control. Preparation of inhibitor comprises reaction of (i) oxyethylenated mono-C4-C30-alkylphenol having 1 to 18 ethylene oxide groups or mixture of oxyethylenated mono- and di-C4-C30-alkylphenols having 1 to 18 ethylene oxide groups with (ii) phosphorus-containing compound on heating followed by bringing thus obtained product into reaction with (iii) substances based on nitrogen-containing heterocyclic compounds at (i)/(ii)/(iii) molar ratio 1:(0.5-1.5):(0.5-1.5), said substances being coal resin processing product. ^ EFFECT: expanded corrosion protection possibilities. ^ 2 cl, 1 tbl, 43 ex
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