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US 10,230,023 B2Granted
Color converter
AssigneeBASF SE
InventorsMartin Koenemann, Gerhard Wagenblast, Robert Send, Sorin Ivanovici, Gerardus De Keyzer
Life of this patent
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Abstract
Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.
Claims3
A fluorescent dye, selected from the group consisting of:
- and mixtures thereof,
- wherein:
- n is 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;
- R1 independently represents hydrogen, C1-C18-alkyl or cycloalkyl, the carbon chain of which may comprise one or more —O—, —S—, —CO—, —SO— and/or —SO2-moieties and which may be mono- or polysubstituted;
- aryl or hetaryl which may be mono- or polysubstituted.
2 more elements
Dependencies are inferred from the claim text.