| 摘要 |
N,N-dialkyl-N'-(beta substituted) alkyl alkylene diamines of the formula <IMAGE> wherein R1, R2 and R3 are C1-4 hydrocarbon groups or H, but both R1 and R2 are not H, R4 is a saturated or unsaturated C14-24 hydrocarbon group, n=1-4 and X is OH or SH are adapted for use as friction and wear reducing additives in friction and wear reducing compositions.
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