ACID RESISTANT PHOSPHATE ESTER FUNCTIONAL FLUIDS

摘要

An acid resistant phosphate ester functional fluid comprises phosphate ester basestock and an additive composition comprising: (1) N-alkyl-2-pyrrolidone, (2) epoxide, and (3) triazole. The functional fluid has utility for lubricating machinery. The additive composition may be prepared separately and used for imparting acid resistance to phosphate esters.