Published January 2016

Investigation of alkylphenol type antioxidant additives against biological damage

A.R. Yusifova

A.A. Javadova

I.A. Jafarova

M.T. Abasova

Lubricating oils of various applications undergo oxidation, corrosion, wear, etc. during operation. Waste oil, as the product of the operation process is exposed to biodegradation during prolonged storage under various climatic conditions. Investigation of the problem is based on a study of biostability of additives of various functional purposes, which are components of the lubricating oil. Detergent-dispersant additives in additive compositions are mainly barium or calcium salts of various derivatives of alkyl phenols and alkyl salicylates. Because of the above, the study of stability of these additives against biodegradation becomes important and necessary. Investigation of the stability of additives against biological damage with the same functional properties, but different composition and structure, was performed in the incubation conditions at a temperature of 28±2 0C under the biocide «Nitrol» at 90 % moisture. It was justified that in addition to increasing biostability of additives, this biocide has also high bactericidal and fungicidal properties.