| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lubricating oil composition for rotary gas compressors that attains both thermal and oxidation stability and sludge resistance at a high level even when used at a high temperature, has a long life and exhibits excellent energy-saving effects. <P>SOLUTION: The lubricating oil composition for rotary gas compressors comprises a lubricating base oil having a viscosity index of at least 120, phenyl-α-naphthylamine or a derivative thereof, a p, p'-dialkyldiphenylamine or a derivative thereof, and a viscosity index-enhancing agent. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
