Thermochromic composition
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United States of America Patent
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Jan 5, 1988
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N/A
app pub date -
Jan 3, 1985
filing date -
Jan 17, 1985
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Expired
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Abstract
A thermochromic composition comprising (1) an electron-donating chromogenic material, (2) a 1,2,3-triazole compound, (3) a weakly basic, sparingly soluble azomethine or carboxylic acid primary amine salt, and (4) an alcohol, amide or ester serving as a solvent.
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