Gas-fuelled engine lubricating oil compositions
US6613724B2 · kind B2 · utility
10Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2002 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jun 5, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A gas-fuelled engine lubricating oil composition that is substantially free from anti-oxidant additives. The gas-fuelled engine lubricating oil composition exhibits good resistance to oil oxidation and nitration and improved corrosion resistance. The composition includes:(i) an oil of lubricating viscosity;(ii) a detergent composition including at least one calcium salicylate having a TBN in the range from 70 to 245;(iii) 0 to 0.2 mass % of nitrogen, based on the mass of the oil composition, of a dispersant; and(iv) a minor amount of one or more co-additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.