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General Electric Company; Hubbard, S., Potyrailo, R., Schottland, P. and Thomas, V. (2006) Tagging Materials for Polymers, Methods, and Articles Made Thereby. US Patent No. 2005/0095715 (Oct. 31, 2003); Chem. Abstr. 2005, 142, 412287.

has been cited by the following article:

• TITLE: High Performance Recycling of Polymers by Means of Their Fluorescence Lifetimes*

  AUTHORS: Heinz Langhals, Dominik Zgela, Thorben Schlücker

  KEYWORDS: Recycling, Polymers, Fluorescence Lifetime, Labelling, Fluorescence Spectroscopy

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.4 No.3, August 20, 2014

  ABSTRACT: Technical polymers could be identified by means of their remarkably strong auto fluorescence. The time constants of this fluorescence proved to be characteristic for the individual polymers and can be economically determined by integrating procedures. The thus obtained unequivocal identification is presented for their sorting for recycling. Furthermore, polymeric materials were doped with fluorescent dyes allowing a fine-classification of special batches.