METHOD OF ACID CORROSION INHIBITOR RECEIVING Russian patent published in 2009 - IPC C23F11/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to field of metals corrosion prevention against corrosion in acid, water-salt mediums and can be used in chemical, oil-and-gas producing industries, and also in metallurgy and energetics at different finds of acid treatment of products, equipment and transportation of acids. Method includes alkylation of imidazoline - reaction product of polyethylene-polyamine or polypropylene-polyamine with high isomerous a-branched monocarboxylic acid - with chloride benzyl at temperature 70-85°C during 4-8 hours at molar correlation of imidazoline with chloride benzyl 1: (1-4), received product is used in the capacity of active basis of acid corrosion inhibitor 10-25 wt % with addition of aliphatic alcohols C₁-C₄ 10-20 wt %, orthophosphoric acid 8-25 wt % and water - the rest.

EFFECT: increasing of inhibitory characteristics, reduction in price of output goods and raw materials base expansion of corrosion inhibitor.

2 cl, 1 tbl, 11 ex