OIL ADDITIVES CONTAINING A THIOCARBAMYL MOIETY

摘要

Thiocarbamyl derivatives, including thioureas and thiocarbamic esters derived from the reaction of an alkenyl isothiocyanate with an amine and alcohol or thiol, respectively, have utility as an additive for hydrocarbons, particularly fuels and mineral lubricating oils, whereby enhanced anticorrosion, oxidation inhibition and/or dispersancy activity is imparted to said hydrocarbons. The derivatives can be made by the formation of an adduct of thiocyanogen halide and polyalkene, removal of the hydrogen halide from said adduct and thermal rearrangement of the product to provide a polyalkenyl isothiocyanate which can be subsequently derivatized to provide a thiocarbamyl moiety containing product having sludge dispersing properties.