期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2016
卷号：3
期号：6
页码：45-51
DOI：10.15587/1729-4061.2016.71267
语种：English
出版社：PC Technology Center
摘要：For ensuring the operation of the mechanisms at high temperatures and pressures, it is necessary to use both stable base oils and effective additives in the composition of the lubricants. In the research, antioxidative and anticorrosive properties were identified in the oils of the condensation products of the alkylphenols with paraformaldehyde and thiocyanic acid polymer. The condensation products of the 5amino1,2,4dithiazole3thione (Xanthane Hydride) with the 2,6ditertButylphenol and paraformaldehyde were investigated. A mixture of the products was obtained in the solution of the glacial acetic acid where the ratio of the 5amino1,2,4dithiazole3thione and 2,6ditertButylphenol fragments is 1:1 and 1:3, respectively.An assumption about the structure of the substances was set up on the basis of the chemical and spectral data. For the compound with the empirical formula C19H27N2O(3–5)S3 the structure containing a residue of the 2,6ditertButylphenol and one heterocyclic fragment was proposed. For the compound with the empirical formula C43H65N2O(3–5)S3 the structure containing three residues of the 2,6ditertButylphenol was proposed. It was found that the products with a high content of the 2,6ditertButyphenol residues dissolve in the oils best of all. It was also found that alkylphenol derivatives of the thiocyanic acid and Xanthane Hydride are promising inhibitors of the corrosion and oxidation of the fuels and lubricants. The technique of the 5amino1,2,4dithiazole3thione synthesis was improved. It was determined that it is better to synthesize it by treating an aqueous solution of the ammonium thiocyanate with the concentrated hydrochloric acid (instead of the sulfuric acid) in equimolar proportions at the temperature of 5–15 C. At the same time, the output of the aim product does not decrease and it can be easier purified.
关键词：5-amino-1;2;4-dithiazole-3-thione;6-di-tert-Butylphenol;paraformaldehyde;Mannich bases;ashless oxidation inhibitors;thermal-oxidative stability;corrosion;antioxidant;thiocyanic acid;fuels and lubricants
