To improve the lubricating properties of a conventional or Fischer-Tropsch derived base oil when high molecular weight hydrocarbons associated with bottoms are properly processed.
A method for improving the lubricating properties of a distillate base oil is characterized by a pour point of 0°C or less and a boiling range having the 10% point falling between about 625°F and about 790°F and the 90% point falling between about 725°F and about 950°F. The method comprises blending with the distillate base oil a sufficient amount of a pour point depressing base oil blending component to reduce the pour point of the resulting base oil blend at least 3°C below the pour point of the distillate base oil, wherein the pour point depressing base oil blending component is an isomerized Fischer-Tropsch derived bottoms product having a pour point that is at least 3°C higher than that of the distillate base oil.
| JP2002524610A | 2002-08-06 | |||
| JP2002524611A | 2002-08-06 |
Hajime Asamura
Katsunori Ando
Yukihiro Ikeda