COMPOSITION FOR PROTECTION OF METALS FROM CORROSION AND SCALE Russian patent published in 2012 - IPC C23F11/08 

FIELD: metallurgy.

SUBSTANCE: invention relates to compositions for inhibiting of corrosion and scaling in heat exchange equipment of technical water supply systems, for preparation of cutting fluids (coolant) and interoperational protection of units and details made of ferrous and nonferrous metals. The composition comprises sodium tripolyphosphate and nitrogen-containing compound, also it additionally contains 2-hydroxyethyl methacrylate and sucrose, and as a nitrogen-containing compound - a product of condensation of boric acid with monoethanolamine and a mixture of fatty acids of saturated and unsaturated series with hydrocarbon radical C₂-C₆ at a molar ratio of 1:5:3, respectively, with the following ratio of components wt %: sodium tripolyphosphate 10.0 - 20.0; product of condensation of boric acid with monoethanolamine and a mixture of fatty acids 70.0 - 80.02; 2-hydroxyethyl methacrylate 2.0 - 4.0 and sucrose 6.0 - 8.0.

EFFECT: increased efficiency of protection against corrosion and scale in heat exchange equipment made of nonferrous metals.

3 tbl