At a predetermined temperature, the microencapsulated pigment changes from color to colorless, or to another color. Available in 6 colors.
Davis Liquid Crystals, Inc: Color-changing pigment
ChromaZone®, a thermochromic injection-molding powder, adds a color-changing aspect to plastic packaging. From Davis Liquid Crystals (San Leandro, CA), the pigment can be used in labeling applications, film casting, extrusion, shrink wrapping or for printing onto substrates.