WATER-SOLUBLE METAL CORROSION INHIBITOR Russian patent published in 2014 - IPC C23F11/167 

FIELD: chemistry.

SUBSTANCE: water-soluble corrosion inhibitor contains a product of condensation of boric acid, diethanolamine, glycol monoether and a mixture of saturated and unsaturated fatty acids with a C₁₂-C₂₂ hydrocarbon radical in molar ratio of 1:2:(0.5-0.7):0.4, respectively, triethyl phosphate and imidazole, with the following ratio of components, wt %: product of condensation of boric acid, diethanolamine, glycol monoether and a mixture of fatty acids 86.0-90.0; triethyl phosphate 2.0-4.0; imidazole 8.0-10.0.

EFFECT: wide range of domestically produced water-soluble corrosion inhibitors, more effective protection of heat-exchange equipment made of ferrous and nonferrous metals from corrosion and scaling.

2 cl, 3 tbl