Patent ID: 8198500
Filing Date: 2012-06-12
Classification: C10G,C10M,C10N

Abstract:
1. A process for making a base oil, comprising: contacting an olefin feed from a Fischer-Tropsch condensate with an isoparaffin, an acidic chloroaluminate ionic liquid catalyst which is an alkyl-pyridinium chloroaluminate having a single linear alkyl group of 2 to 6 carbon atoms in length, and a Bronsted acid which is derived at least in part from an alkyl halide; whereby a base oil is produced by concurrent oligomerization and alkylation of the olefin feed, wherein the base oil has: i. a kinematic viscosity at 100 degrees C. of 6.9 mm ii. a VI of at least 134, and iii. a Bromine Number of less than 4.