Flushed pigment and a method for making the same
US5108509A · kind A · utility
5Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | May 8, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0021
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pigment is formed in an aqueous slurry. A mixture of the pigmented slurry and a vehicle is subjected to high speed, high shear mixing action. The water is forced out of the solid pigment and replaced by the vehicle forming bead-like spherical conglomerates. The conglomerates grow into clusters in the dispersing phase during the mixing process. The clusters are filtered from the dispersing water phase forming a flushed pigment which is used for dispersion in ink systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.