Process for preparing scalenohedral precipitated calcium carbonate
US9428398B2 · kind B2 · utility
0Cited by
8References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 19, 2013 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Mar 19, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick time to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide as to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.