| 摘要 |
PROBLEM TO BE SOLVED: To provide novel phosphorus anti-wear compounds that are useful as highly stable anti-wear lubricant additives that may be used to increase the pack stability of a lubricating fluid while protecting against wear and corrosion.SOLUTION: The present invention provides carboxyalkyl dithiophosphoric ester represented by formula I, or tribologically acceptable salt, solvate, hydrate or proadditive thereof [Ris a C4-9 alkyl group or a C4-9 cycloalkyl group; Ris a C1-3 alkyl group]. |
