Fluorescent or luminous composition

Details Fluorescent or luminous composition Fluorescent or luminous composition

C - Chemistry, Metallurgy

09

K

C09K 11/02 (2006.01) B41M 3/14 (2006.01) B41M 5/26 (2006.01) C09C 3/12 (2006.01) C09D 7/12 (2006.01) C09D 11/00 (2006.01) C09D 201/00 (2006.01) C09K 11/08 (2006.01) G03G 9/09 (2006.01) G06K 7/12 (2006.01) G07D 7/00 (2006.01)

Patent

CA 2352340

A fluorescent or phosphorescent composition which comprises a powder comprising substrate particles and multiple layers covering each of the particles and a fluorescent or phosphorescent material, said composition wherein at least one of said multiple layers contains said fluorescent or phosphorescent material, an object to be verified of its authenticity characterized by containing said composition or having said composition attached to it, and a method for verifying the authenticity of an object, characterized as comprising irradiating a light to the object and detecting a fluorescence or phosphorescence emitted by the object.

L'invention concerne une composition fluorescente ou phosphorescente comprenant une poudre qui contient des particules d'un substrat et de multiples couches couvrant chaque particule, ainsi qu'une matière fluorescente ou phosphorescente, au moins une des multiples couches contenant une matière fluorescente ou phosphorescente. On peut vérifier l'authenticité d'un objet se caractérisant par le fait qu'il contient la composition selon l'invention ou qu'on y a appliqué cette composition, grâce à un procédé de vérification de l'authenticité d'un objet consistant à exposer l'objet à un rayonnement lumineux puis à détecter une fluorescence ou une phosphorescence émise par l'objet.

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