Abstract: A formulation for a high performance Photoluminescent powder coat and a process by which a substrate is covered with multiple layers to give both photoluminescent and other advantageous qualities to said substrate. The first layer applied to the substrate is a retroreflective layer to provide retroreflective action to the second photoluminescent layer. A variety of translucent layers can then be applied over the photoluminescent layer to give such properties as antibacterial or antimicrobial action, non-slip surface or durability, and special textures. The layers can also provide such advantageous qualities as temperature resistance and electroconductivity or electrodissipation. Although this process has a variety of applications, it gives specific advantage to all forms of door hardware, both providing illumination for low-light conditions and advanced qualities such as heat or flame resistance.

Abstract: An electric lamp may be designed as a reliable and inexpensive secondary source of light when electric power to the electric lamp is lost. A nearly transparent photoluminescent sleeve may be extruded or injection molded from clear thermoplastic materials containing photoluminescent pigments. This sleeve is then fit around the electric lamp. Radiant energy from the electrical lamp is stored in the sleeve during normal operation of the electric lamp. When the electric lamp is extinguished, the photoluminescent sleeve reradiates light by photoluminescence for many days. Novel linear path marking systems may be developed by fitting a series of electric lamps, for example, along the length of the exit path, with a photoluminescent sleeve that may then be used as a secondary source of light when the electric lamp is extinguished due to a power disruption.