Synthesis of hectorite-type mineral
US12338129B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Dec 19, 2019 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | May 18, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making a synthetic hectorite-type mineral is described, along with its resulting physical and rheological properties. The synthetic hectorite-type mineral is a 2:1 phyllosilicate essentially free of aluminum, and having a trioctahedral structure with Mg2+ and Li+ occupying octahedral sites. As a hydrogel, the synthetic hectorite-type mineral has a swell index of greater than 55 mL, and a yield point of greater than 290 Pa. The method of making uses a MgO/MgCO3 buffer system, with heating for about 2 hours at temperatures of no higher than 300° C. and pressures of no higher than 600 psi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.