Fluorescent dye blends

Details Fluorescent dye blends Fluorescent dye blends

1997-09-29

1999-07-06

Yoon, Tae

Optical: systems and elements

Signal reflector

359359, 359529, 359589, 428412, 428421, 428480, 428500, 524 90, G02B 512, C08K 55437

Patent

active

059204290

ABSTRACT:
A fluorescent yellow article containing a blend of an N,N'-disubstituted 3,4:9,10-perylenebis(dicarboximide) dye and a fluorescent yellow-green dye soluble in a polymeric matrix and meeting the chromaticity requirements of CIE and ASTM and having a fluorescence luminance factor of greater than 5, as well as a method of preparing such articles is described. Also described is a fluorescent retroreflective article containing a color layer having first and second sides, wherein the article includes retroreflective elements on one side of the color layer or a retroreflective base sheet disposed on one side of the color layer, where the color layer includes the above-mentioned fluorescent yellow article.

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