| 摘要 |
We provide a process for making a base oil, comprising: oligomerizing an olefin feed comprising propylene and propane with an ionic liquid catalyst at a temperature from 0° C. to 150° C. to make a base oil having: i. from 45 to 70 wt % hydrocarbons boiling at 482° C. (900° F.) or higher, ii. a viscosity index from 25 to 90, and iii. a cloud point less than−25° C.
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