[EN] EXTRUDED PET FILMS WITH PHOTOSTABLE DYES FOR COLOR CONVERSION<br/>[FR] FILMS DE PET EXTRUDÉS À COLORANTS PHOTOSTABLES POUR CONVERSION DE COULEUR
申请人:BASF SE
公开号:WO2019243288A1
公开(公告)日:2019-12-26
The present invention relates to a color converter comprising (a)a polyethylene terephthalate matrix material;and (b)at least one organic fluorescent dye selected from a compound of formulae (I.a), (I.b), (I.c) or mixtures thereof wherein EWG1 and EWG2, are CN, CH(O), C(O)R13, OC(O)R13, COOR14, CH(COOR14)2, SO2R14, C(O)NR15R16, SO2NR15R16 or C1-C20-fluoroalkyl; R1, R2, R3, R4, R5, R6, R7a, R7b, R7c, R13, R14, R15 and R16 are as defined in the claims and in the description. The invention also relates to a backlight unit, a liquid crystal display module and a light emitting device comprising this color converter. The invention also relates to novel compounds of formula (l.b), wherein EWG1 = EWG2 = CN.