Process Oil, Process for Production of Deasphalted Oil, Process for Production of Extract, and Process for Production of Process Oil

摘要

The present invention is a pressure-sensitive glass deasphalted oil obtained by the reason of the deasphalted crude oil as a raw material, the following (a) relates to a process oil, and process significant manufacturing method characterized in that it has the property of to (f). (A) polycyclic aromatic hydrocarbon (PCA) content of less than 3% by weight, (b) a viscosity (100 ) 40 to 70 mm ² / s, (c) an annealing point of 85 to 100 , (d ) flash point above 250 , (e) content of 40 to 55 mass%, (f) 10 to 15% by weight of the aromatic hydrocarbon content of the polar material. The present invention is a glass and pressure, or solvent deasphalted extract obtained by extracting the reason for the oil, polycyclic aromatic hydrocarbon (PCA) content of jimyeo obtained by mixing the lubricant base oil is less than 3 mass%, to (a), (i) Note that the process relates to a method for producing oil and process characterized in that it has the state of a to (n). (A) polycyclic aromatic hydrocarbon (PCA) content of less than 3% by weight, (i) a viscosity (100 ) 30 to 80 mm ² / s, (j) annealing point below 90 , (k) flash point above 240 , (l) benzo (a) pyrene content of 1 ppm by mass or less, (m) content of 10 ppm or less by weight of the particular aromatic compound, (n) 10 to 30% by weight content of the polar material. ;