Process for preparing hydroxygallium phthalocyanine crystal, pro

Details Process for preparing hydroxygallium phthalocyanine crystal, pro Process for preparing hydroxygallium phthalocyanine crystal, pro

1993-08-19

1996-02-27

Rizzo, Nicholas

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540139, 540140, C09B 47067, C09B 4706

Patent

active

054950112

ABSTRACT:
A process for preparing hydroxygallium phthalocyanine comprising reacting a gallium trialkoxide and phthalonitrile or diiminoisoindoline in an alcohol solvent, preferably an alcohol having a boiling point of not lower than 150.degree. C., such as ethylene glycol, and hydrolyzing the resulting gallium phthalocyanine, preferably in an aqueous solution of an acid, such as sulfuric acid. The resulting hydroxygallium phthalocyanine exhibits stable electrophotographic characteristics, particularly photosensitivity, charging properties, and a dark decay rate.

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John P. Linsky, et al., "Studies of a Series of Haloaluminum, -gallium, and -indium Phthalocyanines", Inorg. Chem., 1980, 19, pp. 3131-3135.
D. Colaitis, "Etude de Quelques Derives de la Phtalocyanine Discussion des Divers Modes D'Obtention," Bull. Soc. Chim., France, 1962, pp. 23-26.

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