发明名称 PERFECCIONAMIENTOS INTRODUCIDOS EN LA FABRICACION DE VIDRIO FOTOCRAMATICOS TRANSPARENTES.
摘要 <p>The present invention is primarily directed to transparent photochromic glasses which are essentially colorless in the undarkened state but which exhibit a warm brown coloration in the darkened state. Such glasses utilize silver halide crystals to impart photochromic behavior thereto and contain about 1-10 ppm palladium and/or gold. The instant invention is secondarily directed to silver halide crystal-containing photochromic glasses having in excess of 10 ppm palladium and/or gold which exhibit a brownish tint in the undarkened state and a deeper brown coloration in the darkened state. Through differential heat treatment thereof, the latter glasses can be made to exhibit a gradient optical density brownish tint in the undarkened state and also demonstrate a gradient photochromic darkening behavior to a deeper brownish coloration.</p>
申请公布号 ES494735(D0) 申请公布日期 1982.12.01
申请号 ES19350004947 申请日期 1980.09.03
申请人 CORNING GLASS WORKS 发明人
分类号 C03C3/11;C03C4/06;C09K9/00;(IPC1-7):03C1/10 主分类号 C03C3/11
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