Continuous processes for producing titanium dioxide pigments
US6695906B2 · kind B2 · utility
18Cited by
12References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Titanium dioxide pigments having improved gloss and durability are disclosed. These pigments are prepared by continuous processes, where pH, temperature, and addition times of hydrous silica and alumina coatings are carefully controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.