| 摘要 |
<p>A gear oil composition containing polyoxyalkylene glycol as a base oil, wherein the polyoxyalkylene glycol is a polymer obtained by ring-opening polymerization or ring-opening copolymerization of one or more members selected from among alkylene oxides having 2 to 4 carbon atoms and having a viscosity of 5 mm<2>/s to less than 20 mm<2>/s (at 100 DEG C). This gear composition has remarkably excellent oxidation stability and abrasion resistance at elevated temperatures and a good flowability at low temperatures. <H0> ABSTRACT </H0> A gear oil composition comprising polyoxyalkylene glycol(s) as a base oil, characterized in that said polyoxyalkylene glycol(s) are polymer(s) obtained by ring-opening polymerization or copolymerization of one or more alkylene oxides selected from the group of alkylene oxides having 2 to 4 carbon atoms and have a viscosity of 5 mm<2>/s to 20 mm<2>/s at 100 DEG C. This gear oil composition exhibits excellent properties in oxidation stability and wear resistance at high temperatures as well as in flowability at low temperatures.</p> |
