申请人:IDEMITSU KOSAN CO., LTD.
公开号:EP1783196A1
公开(公告)日:2007-05-09
An additive for lubricants exhibiting high oxidation stability, high thermal stability, and high Nox resistance, and having excellent functions as an extreme-pressure additive or wear-resistant agent and a lubricant composition containing the addtive are provided.
The present invention provides an additive for lubricants comprising a phosphate ester derivative represented by the general formula [I]:
wherein Y represents sulfur (S) or oxygen (O); R1 represents a monovalent organic group having 4 to 24 carbon atoms; R2 represents a divalent organic group having 1 to 6 carbon atoms; and n represents an integer of 1 to 3. The present invention also provides a lubricant composition containing the derivative.
本发明提供了一种具有高氧化稳定性、高热稳定性和高抗氧化氮性,并具有优异的极压添加剂或耐磨剂功能的润滑油添加剂,以及一种含有该添加剂的润滑油组合物。
本发明提供了一种由通式 [I] 所代表的磷酸酯衍生物组成的润滑油添加剂:
其中 Y 代表硫(S)或氧(O);R1 代表具有 4 至 24 个碳原子的一价有机基团;R2 代表具有 1 至 6 个碳原子的二价有机基团;n 代表 1 至 3 的整数。