Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-10-14
1977-04-26
Randolph, John D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C09B 4704
Patent
active
040200884
ABSTRACT:
Perhalogeno-copper phthalocyanine granular pigments are obtained in that a perhalogeno-copper phthalocyanine crude pigment is introduced into an aromatic solvent in which is suspended a long-chain alcohol-sulphate, the mixture is heated to 100.degree. - 150.degree. C under pressure, the granules are filtered off and the solvent is either washed out or distilled off in steam.
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Bayer Aktiengesellschaft
Randolph John D.
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