Synthesis of benzotriazole derivatives and their effect on antioxidant properties of synthetic lubricant oil

New N-(aryl(alkylaryl)aminomethyl)-1,2,3-benzotriazoles have been synthesized and their antioxidant properties in the composition of synthetic lubricating oil have been studied. The structure of the obtained compounds was confirmed by IR and NMR spectroscopy. N-(aryl(alkylaryl)aminomethyl)-1,2,3-benzotriazoles were investigated as additives to synthetic lubricating oils. An ester of pentaerythritol and synthetic fatty acids of the C5-C9 fraction (PEE) was used as a synthetic oil. Effect of synthesized compounds on thermooxidative the stability of synthetic lubricating oil was studied standard method volume oxidation according to GOST 236797-79, for 20 hours at a temperature of 225 ° C, in the presence of steel, aluminum and copper plates. It has been shown that the obtained antioxidants noticeably delay the process of oxidation of ester oils and are superior in efficiency to the well-known inhibitor phenyl-α naphthylamine.