Fluorescent diketopyrrolopyrroles
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United States of America Patent
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Aug 30, 2011
Grant Date -
Sep 11, 2008
app pub date -
Nov 30, 2005
filing date -
Dec 9, 2004
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Abstract
The present invention relates to fluorescent diketopyrrolopyrroles of the formula (I), or (III), a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers, EL lasers and electroluminescent devices. A luminescent device comprising a compound, or composition according to the present invention is high in the efficiency of electrical energy utilization and high in luminance.
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