UNITED PHOTOCHROMIC MASTERBATCH changes color when exposed to sunlight/UV, and revert to their original color when the sunlight/UV is dimmed or blocked. After absorbing the energy of sunlight/UV, their molecular structure is changed, which causes their absorbed wavelength to be changed allowing a color to appear. It reverts to the original molecular structure and color when the light stimuli is dimmed or blocked. The photochromic pigments cause the change of color by ultraviolet induced chemical structure change. Since the pigment is very sensitive to the external environment, it is encapsulated incompatible resins for increased protection and durability.

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