Patent ID: 6332974
Filing Date: 2001-12-25
Classification: C10G,Y10S

Abstract:
An isoparaffinic lubricant base stock obtained by (i) hydroisomerizing a paraffinic, Fischer-Tropsch synthesized, waxy hydrocarbon feed having an initial boiling point in the range of 650-750.degree. F., which continuously boils to an end boiling point of at least 1050.degree. F., to form a hydroisomerate having an initial boiling point in said 650-750.degree. F. range, (ii) catalytically dewaxing said hydroisomerate to reduce its pour point and form a dewaxate comprising said base stock having an initial boiling point in said 650-750.degree. F. range, and which continuously boils up to its end boiling point, which is the end boiling point of said dewaxate, and which contains hydrocarbons boiling below said 650-750.degree. F. range, and (iii) removing said lower boiling hydrocarbons from said dewaxate to form said base stock.