Antioxidant system for lubrication base oils
US5840672A · kind A · utility
32Cited by
30References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Jul 17, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to antioxidant compositions comprising (A) at least one secondary diarylamine, (B) at least one sulfurized olefin and/or sulfurized hindered phenol, and (C) at least one oil soluble molybdenum compound. These antioxidant compositions are highly effective at providing oxidative stability to lubricating compositions, especially for highly saturated, low sulfur lubrication base oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.