Synthesis of ep additives based on toluene sulfo chloride and methyl-, allyl xanthogenates

The article is devoted to the current problem, the synthesis of new additives for transmission oils. The authors have synthesized p-toluenesulfomethyl- and allylxanthates, previously undescribed in the literature, obtained by the reaction of p-toluenesulfochloride with methyl- and allylxanthates. Particular attention is paid to the synthesis and structural proof of the synthesized compounds by studying their elemental analysis, physicochemical properties, and IR spectra. The main content of the study is devoted to the study of synthesized compounds as extreme pressure additives for transmisson oils. The authors present comparative tests of the extreme pressure properties of p-toluenesulfomethyl- and allylxanthates, with the known extreme pressure additive LZ-23k, as well as with the aroxycarbonylmethylisopropylxanthate and allyloxymethylisopropylxanthate described in the literature, carried out on a four-ball friction machine (FBM) The analysis of the study data showed a high extreme pressure efficiency of the synthesized compounds. The dependence of the extreme pressure properties of the compounds on their structure is shown. This article may be useful to specialists in the field of synthesis of extreme pressure additives for transmission oils.