| 摘要 |
<p>A distillate fuel composition for reducing copper-corrosion in fuel delivery systems and internal combustion engines which comprises a synergistic combination of (a) a 2,5-dihydrocarbyldithio-1,3,4-thiadiazole of the formula <CHEM> wherein R<1> and R<2> are independently R<3>S or H where R<3> is a hydrocarbyl group containing from 1 to 16 carbon atoms with the proviso that at least one of R<1> and R<2> is not hydrogen, and (b) an adduct of tolyl-triazole and a basic nitrogen compound selected from the group consisting of polyamines, alkoxyamines, aryloxyamines and mono-alkyleneamines. Concentrates of (a) plus (b) are also disclosed.</p> |
