Overbased calcium salicylate greases
US7407920B2 · kind B2 · utility
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20References
7Claims
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Key dates
| Filing date | Jul 29, 2004 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Sep 9, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process and composition for forming a non-Newtonian oil composition in the form of a grease comprising an overbased calcium salicylate and solid particles of colloidally dispersed calcium carbonate in the form of calcite is disclosed wherein the process comprises the steps of heating overbased calcium salicylate, amorphous calcium carbonate, and a converting agent comprising a fatty acid of twelve to twenty-four carbon atoms in an oleaginous medium, and then adding sufficient water, alcohol, and carbon dioxide to the mixture to complete the conversion of the amorphous calcium carbonate to calcite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.