Process for preparing basestocks having high VI using...

Details Process for preparing basestocks having high VI using... Process for preparing basestocks having high VI using...

2006-07-18

2006-07-18

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

C208S027000, C208S108000

Reexamination Certificate

active

07077947

ABSTRACT:
A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreated feedstock is hydrodewaxed using a dewaxing catalyst that has been selectively activated by oxygenate treatment. The hydrodewaxed product may then be hydrofinished.

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