The present invention provides a lubricating oil comprising an alicyclic compound represented by a general formula (I):
wherein n is an integer of 0 or 1; one of R
1
and R
2
represents —CH
2
OR
4
(wherein R
4
represents a carboxylic acid residue) while the other one represents alkyl, lower alkyl-substituted or unsubstituted cycloalkyl, aryl, or aralkyl; and R
3
represents —CH
2
OR
5
(wherein R
5
represents a carboxylic residue) and the like. The lubricating oil of the present invention has an excellent traction coefficient, excellent heat resistance, or the like. For the lubricating oil of the present invention, the alicyclic compound represented by the general formula (I) can be directly used as it is, and other base oils such as ester oil, poly-α-olefin, mineral oil, or silicone oil may be included therein, if necessary.
本发明提供了一种润滑油,其包括由通式(I)表示的脂
环烃化合物:其中n为0或1的整数;R1和R2中的一个表示为—CH2OR4(其中R4表示
羧酸残基),而另一个表示为烷基,低烷基取代或未取代的环烷基,芳香基或芳基烷基;R3表示为—CH2OR5(其中R5表示羧基残基)等。本发明的润滑油具有出色的牵引系数,优异的耐热性等。对于本发明的润滑油,由通式(I)表示的脂
环烃化合物可以直接使用,如果需要,还可以包含其他基础油,例如酯油,聚α烯烃,矿物油或
硅油。