Treatment of pigment
US4052222A · kind A · utility
7Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1976 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Jun 4, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/84
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the treatment of titanium dioxide pigment in which there is added to a slurry of the pigment a compound of silicon, of aluminium, of zirconium and of titanium, changing the pH of the slurry to 7.5 to 8.5 prior to adding a compound of silicon, an acidic compound of aluminium and an alkaline compound of aluminium, thereby producing a coated pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.