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TIME TEMPERATURE INDICATOR

  • US 20100296545A1
  • Filed: 12/28/2007
  • Published: 11/25/2010
  • Est. Priority Date: 01/11/2007
  • Status: Active Grant
First Claim
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1. A time temperature indicator comprising at least one metal layer or metal containing layer and in direct contact to the metal layer or to the metal containing layer at least one doped polymer layer, wherein the dopant is an acid, a base or a salt or a photolatent acid or a photolatent base which dopant is added to the polymer, and/or at least one polymer layer wherein the polymer is functionalized with acidic or latent acidic or basic or latent basic groups;

  • ora time temperature indicator comprising at least one polymer layer containing metal particles and a photolatent acid or a photolatent base, or at least one polymer layer containing metal particles wherein the polymer is functionalized with latent acidic or latent basic groups.

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