ESTERS OF CYCLIC POLYATOMIC ALCOHOLS AS ANTIOXIDANTS TO DIESEL FUELS

Abstract

A number of esters of cyclic polyatomic alcohols - 2,2,5,5-tetramethylolcyclopentanol and 2,2,6,6-tetramethylolcyclohexanol with normal, iso- and neo-monocarboxylic acids were synthesized and their physicochemical, viscosity-temperature and thermo-oxidative properties were studied. A number of compositions were prepared with the addition of 0.004% of esters to hydrotreated diesel fuels, determined their operational characteristics. It was found that with the addition of esters of cyclic polyatomic alcohols with normal, iso- and neo-acids to hydrotreated diesel fuel, it leads to significant increases in TOS - the sediment decreases to 0-1.32 mg/100 ml, the flash point increases from 76⁰С to 87⁰С and the pour point decreases from minus 19.2⁰С to minus 28⁰С. Therefore, these esters can be recommended as complex additives to diesel fuels.