Process for manufacturing improved process oils using extraction of hydrotreated distillates
US6110358A · kind A · utility
208Cited by
9References
10Claims
0Family size
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Key dates
| Filing date | May 21, 1999 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/0418
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing a process oil in which a naphthenic rich distillate is processed through a single hydrotreating stage, the hydrotreated distillate is then solvent extracted to yield a process oil which passes IP-346 and AMES screening test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.