| 摘要 |
The present invention provides a lubricating composition comprising:
- a base oil; and
- one or more poly(hydroxycarboxylic acid) amide salt derivatives having formula (III):
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ [Y-CO[O-A-CO] n -Z-R + ] m pX q- €ƒ€ƒ€ƒ€ƒ€ƒ(III)
wherein Y is hydrogen or an optionally substituted hydrocarbyl group, A is a divalent optionally substituted hydrocarbyl group, n is from 1 to 100, preferably from 1 to 10, m is from 1 to 4, q is from 1 to 4 and p is an integer such that pq = m, Z is an optionally substituted divalent bridging group which is attached to the carbonyl group through a nitrogen atom, R + is an ammonium group and X q- is an anion.
|
