| 摘要 |
Compounds of the formula <IMAGE> wherein the symbols R1 to R9 have the meanings given in claim 1, are suitable as extreme pressure and antiwear additives in lubricants. The compounds contain as radicals R5 or R7 a group of the formula <IMAGE> wherein R10 and R11 have the meanings given in claim 1. The compounds according to the invention are characterized also as good antioxidants and anti-corrosion agents.
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