Oil soluble taggants

摘要

A process for detecting oil or lubricant contamination in the production of an article by adding a Stokes-shifting taggant to an oil or lubricant of a machine utilized to produce the article or a component thereof, irradiating the articles produced with a first wavelength of radiation, and monitoring the articles for emission of radiation at a second wavelength. The taggant can be in the form of a composition containing a Stokes-shifting taggant, which absorbs radiation at a first wavelength and emits radiation at a second wavelength, different from said first wavelength, dissolved or dispersed in an oil or lubricant.

主权项

1. A fluorescent taggant composition, comprising:
a Stokes-shifting taggant comprising the following chemical structure: which absorbs radiation at a first wavelength and emits radiation at a second wavelength, different from said first wavelength; and an oil or lubricant.