Lube oil hydrotreating process
US3941680A · kind A · utility
11Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1971 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Oct 20, 1991 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the production of lubricating oil in order to obtain lower viscosity lubricating oils of increased viscosity index by separating a crude lubricating oil into a residual fraction and a distillate fraction and thereafter subjecting the residual fraction to hydrotreating and separately subjecting the distillate fraction to hydrotreating under more severe conditions than employed in hydrotreating the residual fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.