| 摘要 |
A borate ester having the formula <IMAGE> <IMAGE> wherein Y is N, S or O, X is O or S, R1 and R2 are, independent of one another, selected from the group consisting of H, (C1-C40)hydrocarbon residues and (C3-C50)cycloalkyl, aryl and aralkyl, each of which may further contain N, O or S, R3, R4, R5, R6 and R7 are independent of one another, selected from the group consisting of H and (C1-C8)hydrocarbon residues, n is 0 to 4. An anti-wear/anti-oxidant/anti-friction/anti-rust additive comprises the borate ester of the invention when added to a lubricating oil.
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