Process for the halogenation of copper phthalocyanine
US4948884A · kind A · utility
8Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | May 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B47/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided according to this invention is a process for the halogenation of copper phthalocyanine in titanium tetrachloride in the presence of aluminum chloride, which comprises preliminarily stirring both a part or all of the aluminum chloride and the copper phthalocyanine in titanium tetrachloride at not less than 50.degree. C. and carrying out the halogenation reaction, provided that when the part of the aluminum chloride is added for the preliminary stirring, the remaining portion of the aluminum chloride is added during the halogenation reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.