| 摘要 |
This invention relates to a composition, comprising: (A) at least one compound selected from the group consisting of (A-1 ) a compound represented by the formula T1 T2_p (X1)-(S)n-S-C (X2)-L1 (A-l) (A-2) a compound represented by the formula T3 T4-P (X3)-(S)n-S-(DMTD)-S-J (A-ll) (A-3) a compound represented by the formula L2 _C (X4)-(S)n-S-(DMTD)-S-G (A-lll) and (A-4) mixture of two or more of (A-1), (A-2) and (A-3); wherein in Formulae (A-l), (A-ll) and: (A-lll): (DMTD) is a dimercaptothiadiazole nucleus; J is H, SR, -S-P(X5)-T5 T6or -S-C (X6)-L3 .. G is H, SR or-S -C (X7)-L4 T1, T2, T3, T4, T5 and T6 are independently R, SR or OR; L1, L2, L3 and L4 are independently R, SR, OR or NRR; X1, X2, X3, X4, X5, x6 and X7 are independently O or S; each R is independently a hydrocarbyl group; and n is 1 to 4. In one embodiment, the inventive composition further comprises (B) an acylated nitrogen-containing compound having a substituent of at least about 10 aliphatic carbon atoms, (C) a phosphorus compound, (D) a thiocarbamate, and/or (E) an organic sulfide other than (A). The invention also relates to a lubricating composition or functional fluid characterized by enhanced antiwear properties and comprising the foregoing component (A) and, optionally, one or more of the foregoing components (B), (C), (D) and/or (E).
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