Patent ID: 7763161

Claim:
A process for manufacturing a lubricating base oil, comprising: dewaxing a substantially paraffinic wax feed having greater than about 75 mass percent normal paraffin by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H 2 /liter oil (about 4 to about 20 MSCF/bbl), whereby a lubricating base oil is produced having: i. a total weight percent of molecules with cycloparaffinic functionality greater than 10; and ii. a ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality greater than 15; and wherein said substantially paraffinic wax feed has a weight ratio of molecules having at least 60 or more carbon atoms and molecules having at least 30 carbon atoms less than 0.18, and a T90 boiling point between 660° F. (349° C.) and 1200° F. (649° C.).