A lubricant composition includes a base oil present in an amount of greater than 70 parts by weight per 100 parts by weight of the lubricant composition and an antioxidant. The antioxidant has the structure: wherein each X is independently CH or N, so long as at least one X is N. A is an electron donating group that (1) has an atom having at least one lone pair of electrons that is bonded directly to the aromatic ring or (2) is an aryl or alkyl group. Z is chosen from a hydrogen atom and an electron donating group that has an atom having at least one lone pair of electrons that is bonded directly to the aromatic ring or is an aryl or alkyl group.
润滑剂组合物包括基础油,其在润滑剂组合物的重量百分比中占70%以上,并且还包括
抗氧剂。该
抗氧剂具有以下结构:其中每个X独立地是CH或N,只要至少有一个X是N。A是一个电子供体基团,其(1)具有至少一个孤对电子的原子,该原子直接与芳香环键合,或者(2)是一个芳香基团或烷基基团。Z从氢原子和电子供体基团中选择,该电子供体基团具有至少一个孤对电子的原子,该原子直接与芳香环键合,或者是一个芳香基团或烷基基团。