LUBRICANT OIL COMPOSITION

摘要

PURPOSE:To provide the lubricant oil composition excellent in thermal oxidation stability and especially suitable for film-stretching machines. CONSTITUTION:The lubricant oil composition is produced by adding a phosphite or amine compound and a hindered phenolic additive having a mol.wt. of 500-1200 to a polyalkylene glycol lubricant base oil. A heat-resistant polyalkylene glycol oil is preferably also added, and th5 further addition of a hindered phenolic additive having a mol.wt. of 300-500 permits to especially reduces the production of sludges.