Lubricating oil composition
US9157046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2007 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Nov 26, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating oil composition is provided which is excellent in oxidation stability, base number retention properties, anti-wear properties, extreme pressure properties and anti-corrosion properties and is a low phosphorus and low sulfur lubricating oil composition particularly suitable for internal combustion engines. The composition comprises a lubricating base oil, (A) at least one type selected from the group consisting of metal salts of sulfur-free phosphorus-containing acidic organic compounds, (B) at least one type selected from the group consisting of phosphorus-containing carboxylic acid compounds and metal salts thereof, and (C) at least one type selected from the group consisting of anti-oxidants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.