Additives and lubricant formulations for improved antioxidant properties
US7897552B2 · kind B2 · utility
3Cited by
49References
19Claims
0Family size
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Key dates
| Filing date | Nov 30, 2007 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Oct 27, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating oil composition, additive concentrate, method of lubricating moving parts, a method of improving the oxidation stability of a lubricant formulation. The lubricating oil composition includes a base oil, a hydrocarbon soluble molybdenum compound, and an antioxidant effective amount of one or more polymeric compounds devoid of ester linkages. The polymeric compound may be represented by of the formula:wherein R and R1 are independently selected from C1 to C12 hydrocarbyl groups, n is an integer ranging from about 0 to about 10; and A is a hydrocarbyl group having from about 1 to about 30 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.