Production of phthalocyanine green
US4091028A · kind A · utility
4Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1976 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Aug 9, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B47/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the production of halogenated copper phthalocyanine by heating a mixture of dry crude copper phthalocyanine, an organic solvent, a halogenating agent, a halogen transfer agent and, as catalyst, chlorosulphonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.