24-01-2019 дата публикации
Номер: US20190023905A1
The present invention relates to perylene bisimides with rigid 2,2′-biphenoxy bridges which are useful in a wide variety of applications and to novel to perylene bisimides with rigid 2,2′-biphenoxy bridges. The present invention also relates to the use of said compound(s) in color converters for improving the luminous efficacy of LEDs, to color converters and their use and to lighting devices comprising at least one LED or OLED and at least one color converter. The present invention also relates to a printing ink formulation for security printing comprising at least one perylene bisimide with rigid 2,2′-biphenoxy bridges and security documents. 2: The color converter as claimed in claim 1 ,{'sup': 1', '2, 'sub': 1', '10', '6', '10', '1', '10', '3', '5', '1', '10', '6', '10', '1', '10, 'wherein Rand Rindependently of each other are selected from the group consisting of C-C-alkyl, which is unsubstituted or substituted by C-C-aryl which in turn is unsubstituted or substituted by 1, 2 or 3 C-C-alkyl, C-C-cycloalkyl, which is unsubstituted or substituted by 1, 2 or 3 C-C-alkyl, and C-C-aryl which is unsubstituted or substituted by 1, 2 or 3 C-C-alkyl.'}3: The color converter as claimed in claim 1 ,{'sup': 3', '4', '5', '6', '7', '8', '9', '0', '11', '12', '13', '14', '15', '16', '17', '18', '4', '5', '5', '6', '6', '7', '7', '8', '8', '9', '12', '13', '13', '14', '14', '15', '15', '16', '16', '17, 'sub': 1', '18', '6', '10', '6', '10', '1', '10', '6', '10', '6', '10', '6', '10', '6', '10', '1', '10', '6', '10', '6', '10', '1', '10, 'wherein R, R, R, R, R, R, R, R, R, R, R, R, R, R, Rand Rindependently of each other, are selected from the group consisting of hydrogen, halogen, C-C-alkyl, C-C-aryl, C-C-aryl-C-C-alkylene, C-C-aryloxy and C-C-arylthio, wherein the aryl moiety of C-C-aryl, C-C-aryl-C-C-alkylene, C-C-aryloxy and C-C-arylthio is unsubstituted or substituted by one or more C-C-alkyl, and in addition Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, ...
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