Catalytic process for the manufacture of copper phthalocyanine

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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C07D48722, C09B 4706

Patent

active

051380471

ABSTRACT:
This invention relates to improved catalytic process for the manufacture of copper phthalocyanine by allowing phthalic anhydride to react with urea and a copper compound, in the presence of a hydrophobic liquid (dispersing agent), characterized by the presence, along with the catalyst and the dispersing agent, of a promoter selected from particular classes of amides, imides, ureas, thioureas, guanidines, amines or sulphoxides.

REFERENCES:
patent: 4104277 (1978-08-01), Langley
patent: 4785091 (1988-11-01), Fujita et al.
patent: 4907747 (1990-03-01), Segawa
Gemzova, Chem Abs 109, 94751q (1988).
Harper, Chem Abs 78, 99202n (1972).

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