Bright stock production from low severity resid deasphalting
US10808185B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | Dec 27, 2016 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/129
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.