Novel oxide/dye pigmentary colorants
US5074917A · kind A · utility
11Cited by
4References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel Pigmentary colorants, well adapted for the production of electrostatic developer powders and dentifrices, are comprised of coprecipitated/crystallized mineral oxide particulates and at least one dye. The at least one dye is at least partly physically confined within a matrix of the mineral oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.