Resumen
The present invention relates to a photoinduced thermochromic or thermoluminescent composition, comprising: a) nanoparticles capable of absorbing near-infrared (NIR) radiation and converting the NIR radiation into heat, in particular metal gold nanoparticles; b) one or more phase change materials (PCM) selected from the group consisting of: b1) a PCM capable of acting as chromic or fluorochromic promoter; and b2) a PCM uncapable of acting as chromic or fluorochromic promoter; c) one or more dyes selected from the group consisting of: c1) a dye capable of modifying its colour- or emission- properties when the PCM changes between the solid state and the liquid state; and c2) a dye uncapable of modifying its colour- or emission- properties when the PCM between the solid state and the liquid state; and articles containing it. It also relates to processes for their preparation and their uses in therapy, cosmetics, diagnostics, optics and anti-fake technology.
| Idioma original | Inglés |
|---|---|
| Número de patente | WO2021110794A1 |
| CIP | C09K 9/02,A61F 2/14,B41M 3/14 |
| Fecha de prioridad | 5/12/19 |
| Fecha de introducción | 3/12/20 |
| Estado | Publicada - 10 jun 2021 |