High alkalinity sulfurized alkylphenates of alkaline earth metals and method of making same
US4514313A · kind A · utility
8Cited by
14References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1983 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | Jun 24, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
High alkalinity sulfurized alkylphenates of alkaline earth metals useful as lubricating oil additives and methods of making them are disclosed. A sulfurized alkylphenol is neutralized with an alkaline-earth base in the presence of an oil, a glycol, and halide ions, the glycol being present in the form of a mixture with an alcohol having a boiling point above 150.degree. C. Alcohol, glycol, water, and sediment are removed from the resultant medium and the medium is then carbonated. After carbonation, alcohol, glycol, water, and sediment are removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.