| abstract |
Compounds of formula I <IMAGE> wherein R1 and R2 are each C3-18alkyl, C5-C21cycloalkyl, C5-C6cycloalkylmethyl, C9-C10bicycloalkylmethyl, C9-C10tricycloalkylmethyl, phenyl, C7-C24alkylphenyl or, taken together, are <IMAGE> R3 is -(CH2)3-18-, C4-C40alkylene which is interrupted by -O-, -S-, or -NR4-, or is a group of formula <IMAGE> R4 is hydrogen. C1-C18alkyl, phenyl-C1-C4alkyl, phenyl or C1-C6alkyl-substituted phenyl and R5 is hydrogen or methyl. are particularly suitable for use as additives for lubricant compositions, hydraulic fluids and machining fluids. |