Process for modifying particle size distribution
US6475274B1 · kind B1 · utility
1Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/62
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Fine-grained Tertiary kaolin clay pigments providing improved opacity, sheet gloss and print gloss to paper coated with these pigments are produced by removing fine and coarse particles to produce pigments having a narrow particle size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.