Bleach composition containing weakly to non-colored porphine photo-activator
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United States of America Patent
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Aug 23, 1983
Grant Date -
N/A
app pub date -
Dec 16, 1981
filing date -
Dec 22, 1980
priority date (Note) -
Expired
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Abstract
Bleach compositions comprising a weakly coloring to non-coloring porphine photo-activator and process for bleaching substrates or liquids using said porphine photo-activator are disclosed. The porphine photo-activator used and as defined herein is selected such that the lowest energy allowed electronic transition of the photo-activator molecule gives rise to an absorption band (Q band) with maximum intensity at a wavelength greater than 700 nm.
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