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Daylight/nightglow colored phosphorescent plastic compositions and articles

  • US 6,375,864 B1
  • Filed: 11/10/1998
  • Issued: 04/23/2002
  • Est. Priority Date: 11/10/1998
  • Status: Expired due to Term
First Claim
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1. A composition suitable for forming an entire molded, extruded or formed phosphorescent plastic article having a daylight fluorescent color and a colored luminescent glow-in-the-dark, the composition consisting essentially of:

  • (a) 85% to 99% by weight of a transparent or translucent thermoplastic resin;

    (b) 1% to 15% by weight of a non-radioactive, non-sulfide phosphorescent phosphor pigment that emits light in the visible spectrum, dispersed throughout the resin; and

    (c) 0.001% to 1% by weight of at least one heat-stable polymer-soluble daylight fluorescent dye in solid solution with the phosphorescent phosphor pigment in the resin.

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