Pearlescent pigments containing ferrites
US6139615A · kind A · utility
17Cited by
13References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Feb 27, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09C2200/205
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pearlescent pigment which is a ferrite-coated iron oxide-coated platy substrate in which the ferrite is substantially free of crystallites is obtained by adding metal ions to a slurry of hydrous iron compound and platy particles and then co-calcining in the metal and iron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.