| abstract |
The use of an effective amount of a dithioethylene derivative as annadditive improving the compatibility of a lubricatingnoil formulation having dispersantsncontaining basic nitrogen atoms, with fluorocarbon elastomer seals. Thatncompound has the formula:n nwherein R andnR 1 are independently alkoxycarbonyl, alkenyloxycarbonyl,naryloxycarbonyl, alkylcarbonyl, alkenylcarbonyl, arylcarbonyl,narylalkyl, or together form a carbocycle, and R 2 and R 3 nare independently sulfurized alkyl, alkoxycarbonylalkyl, arylalkyl, ornborated hydroxyalkyl, with the proviso that R, R 1 , R 2 nand R 3 together contain sufficient carbon atoms to render thencompound oil soluble in an oil of lubricating viscosity. |