Color compositions and method
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United States of America Patent
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-
Feb 16, 1988
Grant Date -
N/A
app pub date -
Apr 9, 1985
filing date -
Apr 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of preparing a desired photoluminescent color pigment having a predictable color and spectral response under ambient illuminating radiation and in the dark, comprising the steps of: choosing at least one target color having a dominant wavelength and selected spectral response in the presence of ambient illuminating radiation and in the dark; and mixing by weight about 87-97.8% phosphorescent pigments, about 2-10% fluorescent pigments and about 0.2-3% common pigments, each having a dominant wavelength and spectral response near said target color, to produce said spectral response.
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