About Phthalocyanine Blue Pigment, How much do you know?

Today, we are going to talk about Phthalocyanine Blue. The development of pigment is inseparable from the progress of science and technology. From inorganic pigments to organic pigments, from metals to plastics, all of them reflect the important role of pigment in life and industry. Phthalocyanine blue is one kind of pigment.

Phthalocyanine blue is mainly composed of copper phthalocyanine, with complex chemical structure, it is a dark blue powder.

Phthalocyanine blue has many crystalline states, and there are three kinds that makes up products.

1. With red light, relatively with the highest coloring power α Type phthalocyanine blue (pigment blue 15).

2. With green light and relatively optimal thermodynamic stability β Type phthalocyanine blue (pigment blue 15:3)..

In aromatic solvents (e.g. xylene), α Type phthalocyanine blue will be converted into more stable β B phthalocyanine blue. In order to prevent this transformation, a part of copper monochloride phthalocyanine is usually put into the process of pigment processing of crude phthalocyanine blue to form solvent stable phthalocyanine α Phthalocyanine blue or pigment blue 15:1.

In the paint industry α Type B phthalocyanine blue has green phase due to its bright color, strong coloring power, easy dispersion and good fluidity β B phthalocyanine blue is popular. Because flocculation is not only related to pigments, but also to binders and solvents of paint systems, it is impossible to find a phthalocyanine blue variety that can show the best anti flocculation performance in any paint system, which also requires paint workers to obtain the best formula combination for different paint systems through a large number of experiments.

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