Daylight/nightglow colored phosphorescent plastic...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 11/08 (2006.01) C08K 3/00 (2006.01) C08K 3/02 (2006.01) C08K 5/00 (2006.01) C09K 11/64 (2006.01) C09K 11/80 (2006.01)

Patent

CA 2349160

The invention provides compositions and molded, extruded or formed phosphorescent plastic articles produced therefrom that contain non-radioactive, non-sulfide phosphorescent phosphor pigments that emit tight in the visible spectrum, preferably metal oxide aluminate:europium-activated phosphorescent phosphor pigments, preferably in combination with polymer-soluble daylight fluorescent dyes, in transparent or translucent resins. The plastic articles produced from the compositions of the invention exhibit a remarkably rich, attractive, clear, brilliant fluorescent daylight color and a strong, long- lasting glow-in-the-dark luminescence having a color similar to that of the daylight color.

L'invention se rapporte à des compositions et à des articles plastiques phosphorescents qui en sont obtenus par moulage, extrusion ou formage et qui contiennent des pigments au phosphore phosphorescents non radioactifs et non sulfurés émettant de la lumière dans le spectre visible, de préférence des pigments au phosphore phosphorescents renfermant un aluminate d'oxyde métallique activé à l'europium, et de préférence en combinaison avec des colorants fluorescents à la lumière du jour solubles dans un polymère, dans des résines translucides ou transparentes. Les articles plastiques obtenus à partir des compositions de l'invention ont une couleur fluorescente particulièrement riche, attrayante, claire, et brillante à la lumière du jour, ainsi qu'une forte luminescence de longue durée dans l'obscurité ayant une couleur semblable à celle de la lumière du jour.

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