Process for preparing improved overbased calcium sulfonate
US4997584A · kind A · utility
6Cited by
9References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 5, 1990 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Mar 5, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing a calcium sulfonate having a TBN of 500 where the method comprises reacting CaO, Ca(OH).sub.2 and H.sub.2 O, and synthetic and natural sulfonates in certain molar ratios, respectively, for a sufficient length of time to produce the overbased calcium sulfonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.