Method for manufacturing a process oil with improved solvency
US5853569A · kind A · utility
8Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Dec 10, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Dec 10, 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 a napthenic rich feed is enriched with an aromatic extract oil. The enriched feed is then subjected to a solvent extraction thereby providing a process oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.