Temperature indicators based on polydiacetylene compounds

Details Temperature indicators based on polydiacetylene compounds Temperature indicators based on polydiacetylene compounds

1991-06-19

1992-02-04

Stoll, Robert L.

Compositions

Nonreactive analytical, testing, or indicating compositions

436165, 422 57, G01N 3122

Patent

active

050858017

ABSTRACT:
At least one polydiacetylene compound is suitable for detecting whether an article has ever exceeded a selected temperature. The polydiacetylene compound is deposited on a substrate or mixed with a thermoplastic material. The polydiacetylene compound instantaneously and irreversibly changes from blue to red at the threshold temperature.

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