Corrosion Inhibitors of the SNPKh Brand.
2. The P,N-Containing Corrosion Inhibitor for Protection of Oil-Field Equipment
O. V. Ugryumova, O. A. Varnavskayaa, V. N. Khlebnikova, V. A. Ivanova, S. I. Vasyukova, G. V. Romanova, Ya. V. Ivshinb, R. A. Kaidrikovb, Kh. E. Kharlampidib, and F. Sh. Shakirovc
aOAO Research Institute of Oil-Field Chemistry (NIIneftepromkhim), ul. N. Ershova 29, Kazan, 420045 Russia
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bKazan State Technological University, ul. Karla Marksa 68, Kazan, 420015 Tatarstan, Russia
c TatNIPIneft’, Bugulma, Russia
Received September 6, 2005
Abstract — Series of functionalized pyridinium alkyl[poly(oxyethylene)] phosphites, isoquinolinium alkyl[poly(oxyethylene)] phosphites, pyridinium aryl[poly(oxyethylene)] phosphites, and isoquinolinium aryl[poly(oxyethylene)] phosphites were obtained and their properties were studied systematically. Some of them were found to be effective corrosion inhibitors in aqueous CO2- and H2S-containing media. Isoquinolinium dodecyl- and dodecylphenyl[dodeca(oxyethylene)] phosphites proved to be the best inhibitors. The iso-quinolinium aryl[poly(oxyethylene)] phosphites obtained were used to create a new corrosion inhibitor.
PACS numbers: 81.65.Kn; 82.45.Bb; 89.60.Ec
DOI: 10.1134/S0033173207010134
) is calculated for iron electrode as a function of the number of adsorbed tetrabutylammonium cations and hydrogen concentration in the metal phase (C
). It is shown that the effect of the organic inhibitor of acid corrosion on the rate of iron potentiostatic dissolution is due to the increase in the 
/C