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VISUAL ANGLE-DEPENDING COLOR-SHIFT PIGMENT, METHOD OF MANUFACTURING SUCH PIGMENTS, EMPLOYMENT OF THESE PIGMENTS IN APPLICATIONS ASSOCIATED WITH PROTECTION, COMPOSITION OF COATING CONTAINING THESE PIGMENTS, AND DETECTION DEVICE
VISUAL ANGLE-DEPENDING COLOR-SHIFT PIGMENT, METHOD OF MANUFACTURING SUCH PIGMENTS, EMPLOYMENT OF THESE PIGMENTS IN APPLICATIONS ASSOCIATED WITH PROTECTION, COMPOSITION OF COATING CONTAINING THESE PIGMENTS, AND DETECTION DEVICE
FIELD: protection coatings.;SUBSTANCE: invention aims at protecting bank notes and security papers against counterfeiting. Optically changing pigment contains interferential multilayer structure including light-transmitting dielectric layer having at least one luminescent material. Dielectric layer is selected from of rare-earth metal, bismuth, and principal group III element trifluorides; of principal group II element difluorides; mixtures thereof; organic or organometallic compounds. Luminescent material should be selected from organic or organometallic compounds containing transition or rare-earth metal ions. Above-defined structure may contain one or more semitransparent, partly reflecting layers, one or more nontransparent, fully reflecting layers, and one or more conducting layers. Pigment is prepared by a method including physical or chemical precipitation of the dielectric layer.;EFFECT: preserved proper properties of color shift, increased reliability of protection, and ensured identification simplicity at relatively low cost.;30 cl, 1 tbl, 9 ex
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机译:技术领域:本发明旨在保护钞票和证券纸以防伪造。光学变化的颜料包含干涉多层结构,该干涉多层结构包括具有至少一种发光材料的透光介电层。介电层选自稀土金属,铋和主要的III族元素三氟化物; II类主要元素二氟化物;它们的混合物;有机或有机金属化合物。发光材料应选自含有过渡金属或稀土金属离子的有机或有机金属化合物。上面定义的结构可以包含一个或多个半透明的部分反射层,一个或多个不透明的全反射层以及一个或多个导电层。颜料是通过包括介电层的物理或化学沉淀在内的方法制备的;效果:保留了适当的色移特性,提高了保护的可靠性,并确保了识别成本相对较低的简单性; 30 cl,1 tbl,9 ex
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