초록 ▼

We provide a process for making a base oil, comprising: feeding an olefin feed comprising a propylene to an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation; and tuning an oligomerizing step in the oligomerization zone by mixing a C6+olefin with t

We provide a process for making a base oil, comprising: feeding an olefin feed comprising a propylene to an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation; and tuning an oligomerizing step in the oligomerization zone by mixing a C6+olefin with the propylene in the oligomerization zone to increase a viscosity index of the base oil. We also provide a process for making a base oil, comprising tuning an oligomerizing step by mixing a C6+olefin with a propylene in an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation to increase a viscosity index of the base oil produced in the oligomerization zone; wherein the base oil has selected properties.

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1. A process for making a base oil, comprising: a. feeding an olefin feed comprising a propylene to an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation; andb. tuning an oligomerizing step in the oligomerization zone by mixing 20 to 28 wt % of one

1. A process for making a base oil, comprising: a. feeding an olefin feed comprising a propylene to an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation; andb. tuning an oligomerizing step in the oligomerization zone by mixing 20 to 28 wt % of one or more C6-C12 alpha olefin with the propylene in the oligomerization zone to increase a viscosity index of the base oil; wherein the viscosity index is from 50 to 90. 2. The process of claim 1, wherein the base oil has a kinematic viscosity at 100° C. that is 2.9 mm2/s or greater. 3. The process of claim 1, wherein the viscosity index is less than 85. 4. The process of claim 1, wherein the oligomerization zone additionally comprises an alkylation zone. 5. The process of claim 1, additionally including tuning an alkylation reaction in the oligomerization zone to produce the viscosity index and a kinematic viscosity of the base oil. 6. The process of claim 1, additionally comprising blending the base oil with one or more additives to make a transformer oil. 7. The process of claim 1, wherein the acidic ionic liquid catalyst is selected from the group of an amine-based catalyst, a phosphonium-based catalyst, a sulphonium-based catalyst, and mixtures thereof. 8. The process of claim 7, wherein the amine-based catalyst is a quaternary ammonium chloroaluminate ionic liquid salt. 9. The process of claim 1, wherein the base oil is a bright stock. 10. The process of claim 1, wherein the base oil has at least 55 wt % boiling at 482° C. (900° F.) or higher. 11. The process of claim 1, wherein the tuning decreases a kinematic viscosity at 100° C. of the base oil. 12. The process of claim 1, wherein the C6 to the C12 alpha olefin comprises the C6 to a C8 alpha olefin. 13. The process of claim 2, wherein the kinematic viscosity at 100° C. of the base oil is from greater than 20 to 70 mm2/s. 14. The process of claim 1, wherein the tuning increases the viscosity index without increasing a kinematic viscosity at 100° C. of the base oil. 15. A process for making a base oil, comprising tuning an oligomerizing step by mixing 20 to 28 wt % of one or more C6-C12 alpha olefin with a propylene in an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation to increase a viscosity index of the base oil produced in the oligomerization zone; wherein the base oil has: a. the kinematic viscosity at 100° C. greater than 10 mm2/s;b. the viscosity index from greater than 50 to 90; andc. a pour point less than −19° C. 16. The process of claim 15, wherein the tuning decreases a kinematic viscosity at 100° C. of the base oil. 17. The process of claim 15, wherein the pour point is from −20° C. to −50° C. 18. The process of claim 15, wherein the base oil has at least 55 wt % boiling at 482° C. (900° F.) or higher. 19. The process of claim 15, wherein the tuning increases the viscosity index without increasing a kinematic viscosity at 100° C. of the base oil.