Methods for making low volatile titanium dioxide pigments
US6517629B2 · kind B2 · utility
7Cited by
14References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Feb 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for generating titanium dioxide pigments that have reduced moisture retention. By leaching oxidizer discharge and removing alumina containing compounds, one is able to generate a low volatile pigmentary bases. These low volatile pigmentary bases may be processed into finished low volatile pigments that may be combined with polymers to form polymer matrices. These pigments may be incorporated into polymer matrices at high temperatures without significant lacing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.