Production of extra-heavy lube oils from Fischer-Tropsch wax
US7465389B2 · kind B2 · utility
3Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Sep 21, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S208/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Extra heavy lube base stocks are separated from heavy lube oils with a polar solvent in an amount sufficient to form a first light phase and a second heavy phase. The phases are then separated and the solvent is removed from the second heavy phase to yield an extra heavy lube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.