| abstract |
(57) [Abstract] (Correction) [Solution] A hydrocarbon base oil having a boiling point in the range of 300 to 520 ° C at atmospheric pressure and a total aromatic content of 1.8% by weight. The kinematic viscosity at 40 ° C. is in the range of 15 to 25 mm 2 / s, the viscosity index is 107 or higher, the pour point is −10 ° C. or lower, and 2,6-ditertiary-butyl-p. A lubricating base oil having an RBOT value of 410 minutes or more when cresol (DBPC) is added at 0.5% by weight, and a method for producing the same. [Effect] A lubricating base oil having a sufficiently high viscosity index, low aromatic content and excellent stability (heat, light, oxidation, shear stability, etc.), which is used as a base oil. By expanding the applicable temperature range, improving stability and durability, The physical properties and performance of the lubricating oil can be easily optimized. |