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Full spectrum fluorescent dye composition for the optimization of leak detection processes

  • US 6,165,384 A
  • Filed: 08/20/1998
  • Issued: 12/26/2000
  • Est. Priority Date: 08/27/1997
  • Status: Expired due to Term
First Claim
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1. A fluorescent dye composition for inclusion in a working fluid for detecting sites of fluid leakage, the composition comprising a mixture of a perylene dye, a naphthalimide dye, and a hydrocarbon-based fluid, wherein the combination of the perylene dye, the naphthalimide dye and the hydrocarbon-based fluid are miscible in the working fluid, the working fluid being selected from the group consisting of heavy lubricants and transmission fluids and the volumetric ratio of the perylene dye to the naphthalimide dye in the composition is in the range from about 1.5:

  • 1 to about 0.5;

    1.

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