Surface-reacted calcium carbonate with functional cations
US11168219B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Jul 20, 2017 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Nov 17, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/22
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process of producing a surface-reacted calcium carbonate is described. In embodiments, a calcium carbonate-comprising material is treated with at least one H3O+ ion donor, carbon dioxide, and at least one water-soluble metal cation source in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate. A surface-reacted calcium carbonate obtained by said process and its use are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.