MANNICH BASIS DERIVATIVES IN CAPACITY OF OXIDATION INHIBITORS OF HYDROCARBONS, FERROUS METAL CORROSION AND FORMATION OF SLUDGY DEPOSITS Russian patent published in 2009 - IPC C23F11/14 

FIELD: metallurgy.

SUBSTANCE: invention concerns chemical safeguarding methods of hydrocarbons. Particularly it concerns absorbents of oil- absorptive plants, from oxidation and decomposition, and also protection of internal surfaces of process equipment and pipelines of defined plants against corrosive attack and formation of sludgy deposits. In the capacity of oxidation inhibitor of hydrocarbons, ferrous metal corrosion and formation of sludgy deposits there are used derivatives of Mannich basis of general formula: , where R - CH₃, alkyl and alkylen with carbon atoms quantity C₃-C₂₀, R₁ - CH₃, alkyl with carbon atoms quantity C₄-C₁₂, alkyl aryl C₈H₉, R₂ - H, trisubstituted carbonil, alkyl aryl C₈H₉, n - 1, 2, 3. Inhibitor provides oxidation processes braking in absorbent, high-repeatability protection against corrosive attack of metallic equipment, effective flushing from inner surfaces of process equipment of sludgy deposits, and also prevents repeated deposit formation.

EFFECT: providing of oxidation processes braking in absorbent, high-repeatability protection against corrosive attack of metallic equipment, effective flushing from inner surfaces of process equipment of sludgy deposits, and also prevents repeated deposit formation.

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