Multifunctional ambient lighting compositions

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/22 (2006.01)

Patent

CA 2720859

An acrylic or other polymer composition, optionally containing aluminum trihydrate, and having undoped and/or doped titanium dioxide dispersed evenly throughout is disclosed. Said composition provides a sterile surface which can be renewed. Said composition provides a highly sterile surface upon photoactivation of the surface by at least either low- level ultraviolet irradiation or ambient/natural light (as when using doped titanium dioxide). A method of using such a surface material is also disclosed. Said acrylic or other polymer composition may be adhered onto a polycarbonate or other polymeric backing, optionally by an intervening layer of a third polymer. The resulting acrylic or other polymer/polycarbonate or other polymer combination is adapted to provide ambient lighting when exposed to a light source.

L'invention concerne une composition d'acrylique ou d'autre polymère, contenant facultativement du trihydrate d'aluminium, et ayant un dioxyde de titane non dopé et/ou dopé dispersé de manière régulière à travers toute la composition. Ladite composition fournit une surface stérile pouvant être renouvelée. Ladite composition fournit une surface fortement stérile par la photoactivation de la surface par au moins soit une irradiation ultraviolette de niveau bas, soit une lumière ambiante/naturelle (comme lorsqu'on utilise du dioxyde de titane dopé). Un procédé d'utilisation d'un tel matériau de surface est également décrit. La composition d'acrylique ou d'autre polymère peut être mise en adhérence sur un polycarbonate ou tout autre support polymérique, facultativement par une couche intervenante d'un troisième polymère. L'acrylique résultant ou autre polymère/polycarbonate, ou autre combinaison de polymère, est conçu pour fournir un éclairage ambiant lorsqu'il est exposé à une source de lumière.

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