| 摘要 |
Compositions containing a) a lubricant or a hydraulic fluid, b) at least one compound of the general formula I <IMAGE> in which R1 and R2 independently of one another are C1-C24-alkyl, unsubstituted or C1-C12-alkyl-substituted phenyl or unsubstituted or C1-C4-alkyl-substituted C5-C12-cycloalkyl, or R1 and R2 together are a dimethylene or trimethylene group or a dimethylene or trimethylene which is substituted by at least one C1-C4-alkyl group, and X1 is sulphur or oxygen, and c) at least one compound of the general formulae II, III or IV, or a mixture of such compounds or/and at least one compound of the general formula V, <IMAGE> in which R3 to R16 and X2, X3, X4, M and a are as defined in Claim 1, show a high stability to oxidative degradation. |
