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Coating formulation of the color-changing layer.
| Materials | Formula 1 (in %) | Formula 2 (in %) | Formula 3 (in %) | Formula 4 (in %) |
|---|---|---|---|---|
| Deionized water | 64.86 | 64.7 | 64.52 | 64.34 |
| Tubicoat thickener LP | 1.08 | 1.35 | 1.61 | 1.88 |
| Tubicoat PU60 | 32.43 | 32.35 | 32.26 | 32.17 |
| Thermochromic pigments | 1.62 | 1.62 | 1.61 | 1.61 |
