Lubricating oil compositions
US7625847B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jan 19, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are lubricating oil compositions comprising a lubricating base oil, (A) a specific alkali metal or alkaline earth metal salicylate and/or an overbased or basic salt thereof in an amount of 0.005 to 5 percent by mass in terms of metal and (B) a phosphorus-containing anti-wear agent in an amount of 0.005 to 0.2 percent by mass in terms of phosphorus and containing sulfur in an amount of 0.3 percent by mass or less, based on the total mass of the composition, the salicylate being any of salicylates fulfilling specific requirements. The lubricating oil compositions are low sulfur lubricating oils which are extremely excellent in anti-wear properties and long drain properties and suitable for an internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.