Process for preparing basestocks having high VI using oxygenated dewaxing catalyst
US7077947B2 · kind B2 · utility
6Cited by
83References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2003 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Apr 21, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.