Processes for preparation of titanyl phthalocyanines type X

A process for the preparation of titanyl phthalocyanine Type IV consisting of dissolving Type I titanyl phthalocyanine in a mixture of trihaloacetic acid and an alkylene halide;

• adding the aforementioned dissolved solution to a solution containing in a 1:1 ratio an aliphatic alcohol and water;
• isolating Type X titanyl phthalocyanine from said aliphatic alcohol solution, and wherein said aliphatic alcohol contains from 1 to 6 carbon atoms;
• subsequently washing the Type X obtained with aliphatic alcohol;
• thereafter dispersing the Type X in a halobenzene at room temperature;
• and isolating Type IV titanyl phthalocyanine.

A process for the preparation of titanyl phthalocyanine Type IV consisting of the addition in a solvent of titanium tetraalkoxide to a mixture of phthalonitrile and 1,3-diiminoisoindolene, heating said mixture, followed by separation of the titanyl phthalocyanine Type I product by filtration, washing with dimethylformamide and thereafter drying;

• dissolving the Type I titanyl phthalocyanine obtained in a solution of trihaloacetic acid and an alkylene halide;
• adding the resulting solution containing in a 1:1 ratio an aliphatic alcohol and water, and wherein said aliphatic alcohol contains from 1 to 6 carbon atoms;
• separating the titanyl phthalocyanine product thereform;
• adding the separated product to water followed by separation of the product therefrom;
• dispersing the product titanyl phthalocyanine Type X obtained in a halobenzene solvent at room temperature followed by separation and drying thereof of the titanyl phthalocyanine Type IV obtained.

A process for the preparation of titanyl phthalocyanine Type IV which consists of the addition in a solvent of titanium tetraalkoxide to 1,3-diiminoisoindolene, heating said mixture, followed by separation of the titanyl phthalocyanine Type I product by filtration, washing and drying;

• dissolving the Type I titanyl phthalocyanine obtained in a solution of trihaloacetic acid and an alkylene halide;
• adding the resulting solution to a solution containing in a 1:1 ratio an aliphatic alcohol and water, and wherein said aliphatic alcohol contains from 1 to 6 carbon atoms;
• separating the titanyl phthalocyanine product thereform;
• adding the separated product to water followed by separation of the product therefrom;
• dispersing the product titanyl phthalocyanine Type X obtained in a halobenzene solvent at room temperature followed by separation and drying thereof of the titanyl phthalocyanine Type IV obtained.

A process for the preparation of titanyl phthalocyanine Type IV which consists of adding titanium tetrabutoxide to 1,3-diiminoisoindolene in a 1-chloronaphthalene solvent;

• heating said mixture to reflux temperature of from about 130 degrees to about 180 degrees;
• removing any volatile byproducts by distillation thereby increasing the reflux temperature from about 180.degree. to about 200.degree. C.;
• maintaining the reaction mixture at said temperature for a time period of from about 0.5 to about 8 hours;
• followed by cooling of the reaction mixture to a temperature of from about 130.degree. to about 180.degree. C. by removal of the heat source;
• and filtering said hot mixture to separate the solid titanyl phthalocyanine Type I product;
• admixing the Type I obtained in a solution of trifluoroacetic acid and methylene chloride;
• isolating Type X titanyl phthalocyanine;
• admixing the Type X with a halobenzene at room temperature;
• and separating Type IV titanyl phthalocyanine therefrom.

A process for the preparation of titanyl phthalocyanine Type IV consisting of dissolving Type I titanyl phthalocyanine in a mixture of trihaloacetic acid and an alkylene halide in a ratio of from about 1 volume part of acid to about 1 volume part of halide to about 1 volume part of acid to about 10 volume parts of halide;

• adding the aforementioned dissolved solution to a solution containing in a 1:1 ratio an aliphatic alcohol and water;
• isolating Type X titanyl phthalocyanine from said aliphatic alcohol solution;
• subsequently washing the Type X obtained with aliphatic alcohol, and then heated water;
• thereafter dispersing the Type X in a halobenzene at room temperature;
• and isolating Type IV titanyl phthalocyanine, and wherein said aliphatic alcohol contains from 1 to 6 carbon atoms.