Titanium dioxide pigment, electrophoretic coating compositions including such pigment, and method for treating titanium dioxide pigment
US4846891A · kind A · utility
2Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Jul 22, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for producing TiO.sub.2 pigment which is substantially improved for use in electrophoretic coating compositions. The process comprises adjusting an aqueous slurry of the pigment to a pH of about 6.5-7.5, maintaining such pH at a temperature and for a time which is sufficient to maintain substantial equilibrium, and washing the pigment. There also is disclosed TiO.sub.2 pigment which is produced by the foregoing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.