Processes for the preparation of titanium phthalocyanines

A process for the preparation of titanyl phthalocyanine Type I, Type II, Type III, Type IV, Type X, Type Z-1, and Type Z-2, which consists essentially of adding a titanyl phthalocyanine to a solution of trifluoroacetic acid and methylene chloride;

• adding the resultant solution to a solvent or solvent mixture that will enable precipitation;
• and separating the product titanyl phthalocyanine from the solution followed by an optional washing.

A process for the preparation of titanyl phthalocyanine Type IV which consists essentially of dissolving titanyl phthalocyanine Type I in a solution of trifluoroacetic acid and methylene chloride;

• adding the solution to a stirred mixture of an alcohol and water whereby a precipitate results;
• and separating the product titanyl phthalocyanine Type IV from the solution followed by an optional washing.

A process for the preparation of titanyl phthalocyanine Type I, Type II, Type III, Type IV, Type X, Type Z-1, and Type Z-2, which consists essentially of adding a titanyl phthalocyanine to a solution of trihaloacetic acid and a halogenated hydrocarbon;

• adding the resultant solution to a solvent or solvent mixture that will enable precipitation;
• and separating the product titanyl phthalocyanine from the solution followed by an optional washing.

A process for the preparation of titanyl phthalocyanine Type IV which consists essentially of dissolving a titanyl phthalocyanine Type I, Type II, Type III, Type IV, or Type X in a solution of trifluoroacetic acid and methylene chloride;

• adding the solution to a stirred mixture of an alcohol and water whereby a precipitate results;
• and recovering said titanyl phthalocyanine.

A process for the preparation of titanyl phthalocyanine Type I, Type II, Type III, Type IV, Type X, Type Z-1, and Type Z-2, which consists essentially of adding a titanyl phthalocyanine to a solution of trifluoroacetic acid and a chlorinated hydrocarbon;

• adding the resultant solution to a solvent or solvent mixture that will enable precipitation;
• and recovering said titanyl phthalocyanine.

A process for the preparation of titanyl phthalocyanine which consists essentially of dissolving a titanyl phthalocyanine Type I, Type II, Type III, or Type IV in a solution of trifluoroacetic acid and methylene chloride;

• adding the solution to a stirred solvent or solvent mixture whereby a precipitate of titanyl phthalocyanine of Types I, II, III, or IV results;
• and recovering said titanyl phthalocyanine.

A process for the preparation of titanyl phthalocyanine which consists essentially of dissolving a titanyl phthalocyanine Type X, Type Z-1, or Type Z-2 in a solution of trifluoroacetic acid and methylene chloride;

• adding the solution to a stirred solvent or solvent mixture whereby a precipitate of titanyl phthalocyanine of Types X, Z-1, or Z-2 results;
• and recovering said titanyl phthalocyanine.