Solicitante: SUN CHEMICAL CORP|Lin, H.H.
N. de solicitud: WO2006US30665
N. de publicación: WO2007019418
A family of quantum upconversion glass-ceramic nanocomposite pigments, useful for security and display applications are of particle-in-matrix construction. The embedded phase is a rare earth fluoride crystal, which is responsive for quantum upconversion, and is of nanometer size. The continuous or encapsulating phase is amorphous glass such as silica, to provide a barrier to the rare-earth fluoride crystals. The pigments are synthesized via a sol-gel process.
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