Process of producing plate-shaped calcium carbonate particles
US4857291A · kind A · utility
9Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/61
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a novel process of producing plate-shaped calcium carbonate particles. The process comprises the steps of adding aqueous calcium hydrogen carbonate solution with a temperature of less than 50.degree. C. into an aqueous medium bath held at a temperature of not less than 50.degree. C. to generate plate-shaped calcium carbonate particles in the bath, the temperature of the bath being kept not less than 50.degree. C. during the addition of the aqueous calcium hydrogen carbonate solution; and recovering the generated plate-shape calcium carbonate particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.