UKG Green

Photochromic pigments are pigments that can undergo color changes when exposed to ultraviolet light. The raw material is colorless and transparent when irradiated without ultraviolet light, and the molecular structure changes after irradiation with ultraviolet light to produce color, and the ultraviolet light returns to its original state after loss, and can change from one color to another color after special treatment. Pearlescent pigments, color-changing pigments, fluorescent pigments

The basic colors of photochromic pigments are:

Purple, red, blue, yellow. (no color to color).

Uses of photochromic pigments:

Coating: suitable for all kinds of surface coating products, including PMMA painting, ABS painting, PVC painting, etc.;

Ink: printing of various materials, clothing printing, paper, synthetic film, glass, etc.;

Plastic products: suitable for injection and extrusion molding of various plastic PP, PVC, ABS, silicone rubber and other materials.

Application of Coatings and Screen Printing Inks:

Photochromic pigments are dispersed in paints and inks, not dissolved in paints and inks. Photosensitive inks may have different hues due to different polarities. It can be applied to oil-based and water-based coatings and inks. It is recommended to add two for 0.2%~5.0%, generally 0.5%. Neutral or weakly acidic transparent resin should be used (pH 5~7 is the most suitable). Photosensitive inks are suitable for all types of printing, including screen printing, gravure printing and letterpress printing. It is recommended to use white or light colors for the printing background to increase the difference in color variation. Photosensitive pigments can be mixed with dyes or pigments to create a wider variety of color variations. For printing different materials, suitable paint or ink substrate should be selected.