Process for producing highly chlorinated copper phthalocyanine

Details Process for producing highly chlorinated copper phthalocyanine Process for producing highly chlorinated copper phthalocyanine

1978-11-21

1980-08-19

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

423512R, 423568, C09B 4710

Patent

active

042183766

ABSTRACT:
Highly chlorinated copper phthalocyanine is produced by charging chlorine under an elevated pressure of 1 to 20 Kg/cm.sup.2 (gauge) into a solution of a copper phthalocyanine in the presence of pyrosulfuryl chloride and a catalyst of sulfur or sulfur chloride.
Pyrosulfuryl chloride can be formed by a reaction of chlorosulfonic acid with chlorine and sulfur or sulfur chloride under an elevated pressure.
An auxiliary catalyst of iodine, iodine chloride or a metal chloride can be incorporated to improve the chlorination.

REFERENCES:
patent: 2662085 (1953-12-01), Holtzman et al.
Moser et al., Phthalocyanine Compounds, frontispage and pp. 176-179, Reinhold Publ. Corp., NY (1963).

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