Solvent stable copper phthalocyanine blue pigments

Details Solvent stable copper phthalocyanine blue pigments Solvent stable copper phthalocyanine blue pigments

1980-01-03

1981-09-15

Hearn, Brian E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106288Q, C07D20700, C09B 4704

Patent

active

042896983

ABSTRACT:
A process for producing stable copper phthalocyanine blue pigment in the alpha form. Copper phthalocyanine blue crystals are ground to produce a powder. The powder is contacted with chlorine and mixed with sulfuric acid. The pigment-sulfuric acid mixture is then mixed with water.

REFERENCES:
patent: 2586598 (1952-02-01), Barnhart
patent: 3984433 (1976-10-01), Spietschka
patent: 4010180 (1977-03-01), Schiessler
Barrett et al., "Phthalocyanines and Related Compounds, Part XVI, The Halogenation of Phthalocyanines", J. Chem. Soc., (1939), pp. 1820-1828.

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