Reversible thermochromic composition

Details Reversible thermochromic composition Reversible thermochromic composition

1998-10-02

2000-04-11

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Marking

C09D 1100

Patent

active

060483873

ABSTRACT:
A reversible thermochromic composition is provided which contains a specified diazarhodamine lactone derivative as an electron-donating color-developing organic compound, an electron-accepting compound, and a reaction medium for causing an electron exchange reaction between the components and reversibly at a specified temperature range. This reversible thermochromic composition develops clear reddish color at a colored state, and becomes colorless at a decolored state without residual color.

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