Method of preparing photoconductive pigments by treating .alpha.-form metal-free phthalocyanine to a liquid jet interaction
US5168022A · kind A · utility
7Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | Dec 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0696
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a process for preparing a photoconductive pigment having a small particle size, a polymorph of a pigment is produced by a conversion process wherein a seed amount of the desired polymorph of the pigment and a larger amount of another polymorph of the pigment are subjected to a liquid jet interaction process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.