One-step process for preparation of thixotropic overbased calcium sulfonate complex thickened compositions
US4824584A · kind A · utility
26Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Oct 15, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07G99/0024
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
An improved 1-step process is disclosed for the preparation of thixotropic overbased calcium sulfonate complex thickened compositions containing calcium sulfonate as the dispersing agent and containing CaCO.sub.3 in the form of calcite crystals in colloidal or extremely finely divided form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.