| abstract |
Hydrazides containing, as a characterising feature, the grouping having the formula: WHEREIN R is alkyl, aryl or the group WHEREIN R1 is hydrogen or alkyl, R2 is alkyl or the group CH N.NHCOR or R1 and R2 together are cycloalkyl or 5-nitrofuryl, R3 is alkylene, or a vinylene or phenylene residue and n is 0 or 1; and synthetic lubricant compositions comprising hydrazides having the formula: WHEREIN R4 is amino, alkyl, aryl or one of the groupings WHEREIN R1, R2, R3 and n are as defined above. |