Process for halogenating copper phthalocyanine

Details Process for halogenating copper phthalocyanine Process for halogenating copper phthalocyanine

1979-12-31

1981-10-27

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 4704

Patent

active

042972817

ABSTRACT:
A process for halogenating copper phthalocyanine to a halogen content of about 14 to about 15.5 halogen atoms per CuPc molecule, in an aluminium chloride/sulphuryl chloride mixture which contains 8 to 25% by weight, relative to the amount of AlCl.sub.3, of an anhydrous alkali metal halide, characterized in that the AlCl.sub.3 /SO.sub.2 Cl.sub.2 mixture contains 70 to 150% by weight, relative to the amount of AlCl.sub.3, of sulphuryl chloride and the halogenation is carried out under an excess pressure of 1 to 20 bars.

REFERENCES:
patent: 4020088 (1977-04-01), Wessling
patent: 4051146 (1977-09-01), Wessling
patent: 4077974 (1978-03-01), Wessling

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