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High-intensity, persistent photoluminescent formulations and objects, and methods for creating the same

  • US 8,163,201 B2
  • Filed: 12/20/2005
  • Issued: 04/24/2012
  • Est. Priority Date: 12/20/2004
  • Status: Active Grant
First Claim
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1. A photoluminescent object comprising:

  • (a) a preformed article; and

    (b) at least one photoluminescent phosphorescent layer wherein said photoluminescent phosphorescent layer comprises a film resulting from at least one photoluminescent phosphorescent formulation that is substantially dry as characterized by the residual liquid carrier medium being in the range of about 1-5 weight % of the total weight of the film, and wherein said formulation before being substantially dry comprises;

    (i) an effective amount of photoluminescent phosphorescent materials;

    (ii) at least one liquid carrier medium;

    (iii) at least one polymeric resin; and

    (iv) formulation stabilizing additives;

    said formulation stabilizing additives comprising a rheology modifier and a wetting agent;

    wherein said formulation has an Film Transmission (FT) of at least 95.0%; and

    wherein said photoluminescent phosphorescent materials are uniformly distributed within said formulation.

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