Method for the identification of plastics

Details Method for the identification of plastics Method for the identification of plastics

1993-04-12

1994-07-12

Hannaher, Constantine

Radiant energy

Luminophor irradiation

Methods

250302, 235491, G01N 2164, C08J 320

Patent

active

053291271

ABSTRACT:
A method of identifying different plastics, wherein each plastic is provided with a plurality of fluorescent dyes which differ in terms of their emission frequencies and/or in terms of the duration of their fluorescence, so that a fluorescence pattern, which is distinguished by the duration of the fluorescence and/or by the frequencies occurring, can unambiguously be assigned to each plastic.

REFERENCES:
patent: 3530075 (1970-09-01), Wiebe
patent: 3772099 (1973-11-01), Ryan et al.
patent: 4238524 (1980-12-01), LaLiberte et al.
patent: 5005873 (1991-04-01), West
patent: 5201921 (1993-04-01), Luttermann et al.

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