Preparation of titanyl fluorophthalocyanines
US5629418A · kind A · utility
7Cited by
21References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 27, 1994 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0696
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Titanyl fluorophthalocyanines, and electrophotographic elements, and a method for preparing titanyl fluorophthalocyanine having the steps of: dissolving titanyl fluorophthalocyanine in acid to form a solution; admixing the solution and water to precipitate out amorphous titanyl fluorophthalocyanine; washing the amorphous titanyl fluorophthalocyanine until substantially all of the acid is removed; and retaining the amorphous titanyl fluorophthalocyanine under ambient conditions of wetness/dryness and temperature exclusive of conditions combining both dryness and a temperature of greater than about 50.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.