Finely divided transparent metal-free X-phthalocyanine
US4814441A · kind A · utility
6Cited by
6References
3Claims
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Key dates
| Filing date | Nov 20, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Nov 20, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0026
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Finely divided, transparent, metal-free X-phthalocyanine has a specific surface area of from 75 to 120 m.sup.2 g and not less than 80% by weight of the phthalocyanine particles have a Stokes-equivalent diameter of .ltoreq.0.12 .mu.m. The phthalocyanine is very useful as a pigment for printing inks and finishes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.