Process for improving the lubricating properties of base oils using isomerized high boiling petroleum product

摘要

A method for improving the lubricating properties of an isomerized distillate base oil having a kinematic viscosity at 100 degrees C between 2.5 cSt and 8 cSt, the method comprising blending with said isomerized 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 degrees C below the pour point of the distillate base oil, wherein the resultant lubricating base oil blend comprises a high boiling fraction having a boiling range above 950 degrees F and a low boiling fraction having a boiling range below 950 degrees F, wherein when the high boiling fraction is distilled out, the low boiling fraction has a higher our point than the entire lubricating base oil blend.