Process oils and manufacturing process for such using aromatic enrichment with extraction followed by single stage hydrofinishing
US5840175A · kind A · utility
16Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/0418
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing a process oil is provided in which an aromatic extract oil is added to a naphthenic rich feed to provide a blended feed. The blended feed is then extracted with an aromatic extract solvent to yield a raffinate which subsequently is hydrotreated to provide a process oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.