Kawasaki Kasei Chemicals Ltd.

Tomio Segawa

Kazuhiro Maruyama

Tadashi Ninomiya

Motokazu Suyama

Ryo Matsuura

Yukio Nomiyama

Sakae Kuramoto

Yoichi Kumada

Hideo Sawada

A process for producing a copper phthalocyanine compound, which comprises heating and reacting phthalic acid or a phthalic acid derivative, urea or a urea derivative and cuprous chloride in the presence of a catalyst in an inert organic solvent, wherein the cuprous chloride is used in an amount of from 95 to 99% of the stoichiometric amount relative to the phthalic acid or the phthalic acid derivative.

Process for producing a copper phthalocyanine compound

In a process for producing a metal phthalocyanine and/or its derivative by heating phthalic anhydride and/or its derivative, urea and a metal compound in an organic solvent in the presence of a catalyst, or by heating phthalodinitrile and a metal or a metal compound in an organic solvent, the improvement wherein the reaction for the production of the metal phthalocyanine and/or its derivative is conducted by an addition of cyanuric acid and/or its derivative.

Process for producing a metal phthalocyanine and/or its derivative

A highly chlorinated copper phthalocyanine is produced by chlorinating a copper phthalocyanine in the presence of a catalyst for chlorination in a solvent by charging chlorine under an elevated pressure. The chlorination is carried out in an inert organic solvent incorporating chlorosulfonic acid and/or pyrosulfuryl chloride at a ratio of 1 to 30 wt. % based on said inert organic solvent which maintain dispersibility of said resulting highly chlorinated copper phthalocyanine.

Process for producing highly chlorinated copper phthalocyanine

Highly chlorinated copper phthalocyanine is produced by charging chlorine under an elevated pressure of 1 to 20 Kg/cm.sup.2 (gauge) into a solution of a copper phthalocyanine in the presence of pyrosulfuryl chloride and a catalyst of sulfur or sulfur chloride. Pyrosulfuryl chloride can be formed by a reaction of chlorosulfonic acid with chlorine and sulfur or sulfur chloride under an elevated pressure. An auxiliary catalyst of iodine, iodine chloride or a metal chloride can be incorporated to improve the chlorination.

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Kawasaki, Japan

Tomio Segawa