Anti-corrosion properties of aminated epoxy liquid polybutadiene in the composition of conservation liquids

Epoxidized polybutadienes were synthesized by epoxidation of liquid polybutadiene (LPBD) molecular weights of 1500 and 3000 with performic acid formed in situ by the reaction of formic acid and hydrogen peroxide. The amination reaction of epoxidized polybutadienes w as used to obtain their amine derivatives. In the amination reaction of epoxidized liquid polybutadiene (ELPBD), ZnCl2 was used as a catalyst, organoaluminum compounds and solvents produced by Sigma-Aldrich and Merck, and waste turbine oil T-30.
The structure of LPBD, ELPBD and its amino derivative (AELPBD) was determined on a Bruker Alpha IR Fourier spectrometer (Germany) in the frequency range of 400…4000 sm-1 and NMR spectra were recorded on a Bruker-Fourier spectrometer (300 MHz) at frequencies of 300 M Hz.
The synthesized amine derivatives, in addition to high adhesion to the metal surface, also have a synergistic effect and significantly increase the protective effect of the inhibitor, accelerate solubility in mineral oils and significantly improve the anti-corrosion quality of conservation liquids. Samples of aminated epoxidized polybutadienes tested as part of conservation liquids showed high anticorrosion efficiency in the Q-4 hydro chamber (GOST 9.054-75) for 310…480 days, in sea water for 210…360 days and in 0,001 % sulfuric acid in within 130…260 days.

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