Process for stabilizing lubricating oil with elemental sulfur
US3972853A · kind A · utility
4Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1974 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Aug 8, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2219/082
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A stabilized lubricating oil resistant to oxidation and sludge formation upon exposure to an oxidative environment is prepared without forming undesirable color bodies therein by contacting the lubricating oil stock with a small amount of elemental sulfur of from about 0.1 to about 0.5 percent by weight at a contact temperature of from about 25.degree.C to about 70.degree.C and, thereafter, removing any unreacted sulfur therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.