| abstract |
A description is given of compounds of the formula I, and mixtures thereof, ##STR1## (I), in which Y and Z independently of one another are a radical of the formula ##STR2## (III) R and R 1 independently of one another are hydrogen, C 1 -C 12 alkyl, C 5 -C 8 cycloalkyl, C 1 -C 4 alkyl-substituted C 5 -C 8 cycloalkyl, phenyl or C 1 -C 4 alkyl-substituted phenyl, n R 2 is C 2 -C 20 alkylene, C 5 -C 8 cycloalkylene, a radical of the formula ##STR3## The compounds/mixtures are particularly suitable as metal deactivators for use in lubricants. |