Color-change materials

Details Color-change materials Color-change materials

C - Chemistry, Metallurgy

09

K

C09K 9/00 (2006.01) C09K 9/02 (2006.01)

Patent

CA 2253160

A color-change material has a reversibly thermochromic layer and a porous layer containing a low-refractive-index pigment. The color-change material changes its color in response to heat or water. The reversibly thermochromic layer and the porous layer are superposed on each other, or the reversibly thermochromic layer and the porous layer are formed side by side. Alternatively, a color-change material has a substrate and formed thereon a color-changing porous layer including a reversibly thermochromic material, a low-refractive-index pigment, and a binder. The reversibly thermochromic material and the pigment are dispersed in the binder and tenaciously adherent thereto.

Un matériau de couleur changeante comprend une couche thermochromique réversible et une couche poreuse contenant un pigment à faible indice de réfraction. Le matériau de couleur changeante change de couleur sous l'effet de la chaleur ou de l'eau. La couche thermochromique réversible et la couche poreuse sont superposées ou sont formées côte à côte. De manière différente, un matériau de couleur changeante peut consister en un substrat sur lequel on forme une couche poreuse de couleur changeante, comprenant une matière thermochromique réversible, un pigment à faible indice de réfraction et un liant. La matière thermochromique réversible et le pigment sont dispersés dans le liant et y adhèrent fortement.

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