| 摘要 |
A normally-liquid, synthetic ester base lubricant composition having enhanced oxidation retardation at temperatures greater than 400 DEG F. is disclosed. The composition contains, in addition to the base lubricant, minor amounts of an alpha-alkyl styrenated aromatic amine which is the condensation product of (1) a secondary aromatic mono or diamine having non-olefinic, non-acetylenic hydrocarbon radicals of about one to 20 carbon atoms and at least one non-olefinic, non-acetylenic aromatic hydrocarbon radical of about six to 16 atoms attached to an amine group, and (2) an alpha-alkyl styrene, particularly an alpha-lower alkyl styrene.
|
