申请人:ASAHI DENKA KOGYO KABUSHIKI KAISHA
公开号:EP1041135A1
公开(公告)日:2000-10-04
In diesel engines, soot is produced by combustion and enters into the engine oil, preventing the engine lubricant from fully exercising its lubricity. The present invention provides a lubricating composition comprising a lubricating basestock, an organic molybdenum compound (A) and succinimide (B) having 0.01 or less of an IR spectrum absorbance peak intensity ratio α/β, wherein α represents an absorbance peak intensity at 1,550±10cm-1 and β represents an absorbance peak intensity at 1,700±10cm-1. Preferably, the organic molybdenum compound is the compound represented by the following formula (1) or formula (2):
(wherein R1 to R8 each independently represent a hydrocarbon, and X1 to X8 each independently represent a sulfur atom or an oxygen atom), or a reaction product of an amine and a molybdenum compound having at least one pentavalent or hexavalent molybdenum atom.
在柴油发动机中,燃烧产生的烟尘会进入发动机油中,使发动机润滑油无法充分发挥其润滑性能。本发明提供了一种润滑组合物,该组合物包括润滑基质、有机钼化合物(A)和琥珀酰亚胺(B),其红外光谱吸光峰强度比 α/β 为 0.01 或更小,其中 α 表示 1,550±10cm-1 处的吸光峰强度,β 表示 1,700±10cm-1 处的吸光峰强度。有机钼化合物最好是下式(1)或式(2)所代表的化合物:
(其中 R1 至 R8 各自独立地代表烃,X1 至 X8 各自独立地代表硫原子或氧原子),或胺与至少具有一个五价或六价钼原子的钼化合物的反应产物。