Process for preparing an additive for lubricating oils, the additive thus obtained and a lubricating composition containing the additive
US5041231A · kind A · utility
2Cited by
21References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1989 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | May 9, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns a process for preparing a basic additive for lubricating oils having an antiwear and detergent effect, the additive thus obtained and a lubricating composition containing the additive. The process consists of contacting an amino-acid in solution or in dispersion in the oil with a detergent, an alkaline-earth metal derivative, carbon dioxide in diluent oil, a hydrocarbon-based solvent, and a polar solvent in the presence of a nitrogen-based basic derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.