Method of overbasing with a hydroxy sulfonic acid copromoter
US5108631A · kind A · utility
1Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Sep 18, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Overbased salt compositions are formed by reacting a hydreocarbyl substituted sulfonic acid or salt thereof with a basic neutralizing agent, in the presence of a hydroxy sulfonic acid or salt thereof. The overbased salt composition is preferably overbased by casrbonating via CO.sub.2 bubbling. Mixed overbased salts and compositions containing the mixed salts are disclosed as well as lubricating compositions containing such salts. The lubricating compositions have particularly good clarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.