Process for preparing surface-reacted calcium carbonate
US10876004B2 · kind B2 · utility
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6References
25Claims
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Key dates
| Filing date | Jul 21, 2017 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Aug 3, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for producing surface-reacted calcium carbonate, wherein a calcium carbonate-comprising material is treated with phosphoric acid, carbon dioxide, and specific dicarboxylic acids, in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate. Furthermore, the present invention relates to surface-reacted calcium carbonate obtained by said process and its use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.