| 摘要 |
In a rust and oxidation (R&O) inhibited lubricant composition comprising a base oil and rust and oxidation inhibitors, the invention is directed to the improvement wherein the lubricant composition includes (a) a dithiocarbamate compound represented by the formula <IMG> wherein R4 is a hydrocarbylene group having 1 to 10 carbon atoms, each R5 is a hydrogen or a hydrocarbyl group having 1 to 18 carbon atoms, and each R3 is a hydrocarbyl group having 1 to 18 carbon atoms; (b) an alkylphenyl-.alpha.-naphthylamine; and optionally (c) a hydrocarbyl phosphite represented by the formula (R6O)3P where each R6 is independently C1 to C18 alkyl, C2 to C18 alkenyl, or C6 to C18 aryl. Each component (a) and (b), or (a), (b) and (c) is present in an amount sufficient to provide improved inhibition of oxidation to the R&O lubricant composition.
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