Importance

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Abstract

Lubricant compositions or hydraulic fluid compositions containing (a) at least one lubricant or one hydraulic fluid and (b) at least one compound of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are each an alkyl group having 1 to 30 C atoms, an unsubstituted or C.sub.1 -C.sub.8 alkyl-substituted cycloalkyl group having 5 to 12 C atoms or an unsubstituted or C.sub.1 -C.sub.12 -alkyl-substituted C.sub.6 -C.sub.10 aryl group, or R.sup.1 and R.sup.2 together are an unsubstituted or C.sub.1 -C.sub.12 alkyl-substituted alkylene group haivng 2 to 20 C atoms or an arylene group having 6 to 20 C atoms, and R.sup.5 and R.sup.6 are identical or different and are each an alkyl group having 1 to 30 C atoms, or R.sup.5 and R.sup.6 together are an unsubstituted or C.sub.1 -C.sub.12 alkyl-substituted alkylene group having 2 to 20 C atoms or an alkylene group which has 2 to 10 C atoms and is interrupted by --O--, --S-- or --NR.sup.9 --, in which R.sup.9 is H or C.sub.1 -C.sub.4 alkyl, and X is O or S.

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First Claim