Production of oxititanium phthalocyanine

Abstract

Abstract PURPOSE:To obtain low-crystalline M-type oxititanium phthalocyanine able to perform mass production by dissolving oxititanium phthalocyanine as a raw material in sulfuric acid and reprecipitating in mixed solution of methanol and water. CONSTITUTION:Oxititanium phthalocyanine as a raw material is added into concentrated sulfuric acid with stirring and dissolved. Next, methanol is mixed with water in a ratio of 10-90%, preferably 40-80% (amount of methanol is wt.%) to obtain a mixed solution, then the above-mentioned oxititanium phthalocyanine solution in sulfuric acid is dropped into the mixed solution, thus reprecipitation is generated to afford the aimed M-type oxititanium phthalocyanine exhibiting 7.2 deg., 14.2 deg., 24.0 deg. and 27.2 deg. diffraction angle (2theta+ or -0.2 deg.) by Cu-Kalpha characteristic X-ray.

Inventors

• 👤 Kazufumi Inai
• 👤 一史 井内
• 👤 Hajime Miyazaki
• 👤 宮崎　元
• 👤 Hideyuki Takai
• 👤 秀幸 高井
• 👤 Itaru Yamazaki
• 👤 山崎　至

Bibliographic Details