BIODEGRADABLE LUBRICANT BASE OIL

摘要

PROBLEM TO BE SOLVED: To provide a biodegradable lubricant base oil excellent in flowability at low temperature and having moderate viscosity, and good in oxidation stability.;SOLUTION: There is provided a biodegradable lubricant base oil containing oil and fat having the content of saturated aliphatic acid having 8 carbon atoms of 1.0 to 40.0 wt.%, the content of saturated aliphatic acid having 16 to 22 carbon atoms of 1.0 to 25.0 wt.% and the content of unsaturated aliphatic acid having 16 to 22 carbon atoms of 40.0 wt.% or more in a constituent fatty acid composition as a main component and specific antioxidants added, and having the flow point of -15°C or less, CDM stability of 10 hours or more and a viscosity index of 170 or more.;COPYRIGHT: (C)2015,JPO&INPIT