The effect of extraction temperature and solvent to oil ratio on viscosity index of mixed-medium lubricating oil fraction by using solvents extraction
By: Muhammad, Abd al-Halim Abd al-Karim; Khidr, Muhammad Jabir Yass. Iraqi Journal of Chemical and Petroleum Engineering. Vol. 10 (Jun. 2009), pp.13-18, 6 p.
Subjects: Industrial chemistry; Lubricants; Lubrication