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CHEMISTRY AND CHEMICAL ENGINEERING

CHEMISTRY AND CHEMICAL ENGINEERING

DOI

10.51348/SHCU5202

Abstract

Aimed studies on the synthesis of metal complexonates have carried out. The reaction of obtaining zincate zincate oxyethylene diphosphonic acid OEDP has studied. On the basis of synthesized zincate-OEDP, compositions of corrosion inhibitors and deposits of mineral salts with the addition of a vacuum residue of monoethanolamine (RMEA) and polyaminocrotanol (PKI-3), which are able to effectively suppress corrosion processes in environments with different initial corrosive activity, have been compiled. It is proved that the high efficiency of the composition OEDP : zincate-OEDP : PKI-3 (maximum protective effect - 97.9%) is much more effective than the composition OEDP : zincate-OEDP : RMEA (maximum protective effect - 92.0%). This is due to an increase in ammonium centers, the strength of complexonates based on OEDP, and the presence of a strong methyl-nitrogen bond in the compositions prepared with PKI-3, as a result of which stronger protective layers are formed on the surface of the metal subject to corrosion. Low-stage, energy-saving technologies for the production of inhibitors of mineral salt deposition and corrosion based on local raw materials and secondary industrial products have developed.

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