Thermochromic polyurethane foam
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United States of America Patent
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May 19, 1987
Grant Date -
N/A
app pub date -
Jan 31, 1986
filing date -
Jan 31, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A thermochromatic polyurethane foam comprising a polyol and a polyisocyanate as main components, and a thermochromic composition serving as a coloring agent and added to the main components singly or conjointly with a usual dye or pigment. The thermochromic composition comprises an electron-donating chromogenic material, an acidic substance and a solvent.
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