Ultrafine hydrous kaolin pigments, methods of making the pigments, and methods of using the pigments in gloss paint formulations
US8557037B2 · kind B2 · utility
3Cited by
28References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2004 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Aug 26, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/64
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are methods of processing kaolin to produce ultrafine hydrous kaolin. The methods involve processing gray crude kaolin by subjecting the kaolin crude to flotation and then centrifuging the kaolin to provide a fine stream that is subject to refinement. Also disclosed are systems for the automated processing of gray crude kaolin to produce the ultrafine hydrous kaolin and paint compositions that contain the ultrafine hydrous kaolin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.