thermochromic powder pigment

Screen printing with thermochromic ink is one of the more demanding pigment applications — you're asking a material to perform a reversible color transition reliably, across thousands of print cycles, under real-world handling conditions. The pigment has to disperse cleanly into the ink vehicle, survive the shear of the squeegee, and still respond predictably to temperature after it's cured onto the substrate.

Thermochromic pigment delivers that response through a simple thermal trigger. Touch it, warm it, cool it—the color shifts. The effect is immediate, repeatable, and requires no power source.

KTP-30-BR is a Black-to-Red color-changing thermochromic pigment with a 31°C activation temperature in the fine 3–10μm particle size range — a microencapsulated leuco dye pigment that shifts from black below 31°C to red above 31°C, producing a two-color visual transition triggered by body temperature or warm contact.