Process for the manufacture of phthalocyanines
US4320059A · kind A · utility
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6References
6Claims
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Assignee
Inventor
Key dates
| Filing date | Nov 10, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Nov 10, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B47/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Phthalocyanine compounds useful as pigments are prepared under a positive pressure of ammonia gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.