Method for improving the demulsibility of base oils
US5282960A · kind A · utility
1Cited by
24References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1991 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Oct 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G33/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lube oil basestocks having an oil/water interfacial tension (.gamma. o/w) of less than 41 mN/m, preferably less than about 35 mN/m which exhibit unacceptable demulsibility can have their demulsibility performance improved by contacting said lube oil basestock with an acidic ion exchange resin, such as Amberlyst AR-15, or with silica. The treated lube oil base stock exhibits an oil/water interfacial tension (.gamma. o/w) of at least about 41 mN/m, preferably at least about 42 mN/m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.