Antioxidant combination for oxidation and deposit control in lubricants containing molybdenum and alkylated phenothiazine
US6797677B2 · kind B2 · utility
20Cited by
111References
88Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M163/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a lubricating oil composition having improved antioxidant properties, and which contains a molybdenum compound and an alkylated phenothiazine. Further, it may also include a secondary diarylamine, preferably an alkylated diphenylamine. This combination of additives provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant, or a transmission lubricant, including low levels and zero levels of phosphorus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.