Thermochromic pigments are sensitive to temperature. They change colour when temperature are heated up or cooled down. 
 
Color conversion:
From colorless to colored (cold activated)
From color to colorless (heat activated) 
 
Recommended concentrations
For Solvent/water based ink/paint       3~30% w/w (25%)
For plastics injection/extrusion         0.2%~1% w/w (0.5%)
 
Available activated temperatures:
15°C, 22°C, 28°C,31°C, 33°C, 38°C, 43°C, 45°C, 50°C, 65°C

Applications:
1. Coating: suitable for all types of surface coating products, including PMMA paint, ABS painting, PVC paint, etc.
2. Inks: all kinds printing of materials, including fabric, paper, synthetic film, glass, etc.
3. Plastic Products: Plastic applicable to all types of PP, PVC, ABS, silicone rubber material such as injection, extrusion forming.
4. Inks: all kinds printing of materials, including fabric, paper, synthetic film, glass, etc.