Basic alkaline earth metal sulphonates
US4557872A · kind A · utility
4Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1983 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Oct 11, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07G99/0024
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Oil soluble basic magnesium sulphonates useful as lubricating oil additives are prepared by blowing carbon dioxide through a mixture of sulphonic acid or its sulphonate, magnesium oxide, a hydrocarbon solvent, water, a C.sub.3 to C.sub.6 ketone and a reaction promoter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.