Patent ID: 6312132
Filing Date: 2001-11-06
Classification: B32B,C08K,G02B,Y10S,Y10T

Abstract:
A fluorescent red article comprising:a. a polymer matrix; andb. a perylene dicarboximide dye of the formula ##STR4##whereinR.sub.1 and R.sub.2 are identical or different C.sub.1 -C.sub.18 alkyl which are unsubstituted or substituted by C.sub.1 -C.sub.18 alkoxy, C.sub.1 -C.sub.18 alkanoyloxy, C.sub.1 -C.sub.18 alkylthio, hydroxyl, phenyl, phenoxy or phenylthio; cyclohexyl which is unsubstituted or substituted by hydroxyl, C.sub.1 -C.sub.5 alkyl, methoxy, ethoxy, C.sub.1 -C.sub.2 alkylthio, C.sub.1 -C.sub.18 alkanoyloxy or C.sub.1 -C.sub.18 alkoxycarbonyl; phenyl which is mono-substituted or di-substituted in the ortho position by C.sub.1 -C.sub.5 alkyl or chlorine or by C.sub.1 -C.sub.5 alkyl and chlorine; or naphthyl; X, Y and Z are each independently chlorine, bromine or --OR.sub.3, and R.sub.3 is unsubstituted phenyl, or phenyl substituted by cyano, halogen, nitro, C.sub.1 -C.sub.18 alkyl or a mixture thereof, or naphthyl or anthryl; andwherein the article has chromaticity coordinates (x, y) within the area defined by (0.648, 0.351), (0.735, 0.265), (0.629, 0.281) and (0.565, 0.346) in terms of the CIE 1931 Standard Colorimetric System and measured using 0/45 geometry and evaluated with CIE Standard Illuminant D65 and a fluorescence luminance factor of at least about 8.