Lubricating oil compositions
US6649575B2 · kind B2 · utility
6Cited by
10References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Dec 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low-phosphorus lubricant comprises:an oil of lubricating viscosity;a nitrogen-containing and a nitrogen-free dispersant;a metal dihydrocarbyl dithiophosphate; anda hydrocarbyl-substituted carboxylic acid derivative,the ratio of the dispersants being such as to provide suitable fluoroelastomer seal compatibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.