| 摘要 |
The invention relates to novel compounds of formula I <IMAGE> (I) n is 1 or 2, R and R. are each independently of the other -OR1, -SR2 or -NR3R4, R1 is hydrogen, C1-C30alkyl, C5-C7cycloalkyl, phenyl or naphthyl, phenyl- or naphthyl-substituted C1-C18alkyl or phenyl or naphthyl which are substituted by C1-C12alkyl, C1-C12alkoxy or C1-C12hydroxyalkyl, R2 is C1-C30alkyl, phenyl or naphthyl, phenyl- or naphthyl-substituted C1-C18alkyl or phenyl or naphthyl which are substituted by C1-C12alkyl, C1-C12alkoxy or C1-C12hydroxyalkyl, or is a radical of formula (CH2)p-CO-OR5, p is 1 or 2, R3 and R4 have each independently of the other the meanings of R1, or -NR3R4 is piperidyl, pyrrolidyl or azepyl, and R5is hydrogen, C1-C30alkyl, C5-C7cycloalkyl, phenyl or naphthyl, phenyl- or naphthyl-substituted C1-C18alkyl or phenyl or naphthyl which are substituted by C1-C12alkyl, C1-C12alkoxy or C1-C12hydroxyalkyl. The compounds may be used as lubricant additives.
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