Preparation of alpha-, beta-, and gamma-copper...

Details Preparation of alpha-, beta-, and gamma-copper... Preparation of alpha-, beta-, and gamma-copper...

C - Chemistry, Metallurgy

09

B

260/197

C09B 47/04 (2006.01) C09B 47/067 (2006.01) C09B 67/22 (2006.01)

Patent

CA 1084911

PREPARATION OF ALPHA-, BETA, AND GAMMA-COPPER PHTHALOCYANINE PIGMENTS Abstract of the Disclosure A process for the production of alpha-, beta-, and gamma-copper phthalocyanine pigments by reacting an aromatic or aromatic heterocyclic ortho-dinitrile compound and copper or a copper compound capable of providing the central metal atom of a phthalocyanine pigment at a temperature below 100°C in the presence of a alkaline substance in a hydrophilic aliphatic organic solvent containing one or more hydroxy groups and adding a copper phthalocyanine in conventional pigmentary form from the beginning of the reaction as a catalyst or crystal form controller or both.

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