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US 4,486,587 AGranted
Concentration of light over a particular area and novel fluorescent compounds
AssigneeBASF SE
InventorGuenther Seybold
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AssigneeBASF SE
InventorGuenther Seybold
Estimating the term…
A process for concentrating light over a particular area by means of fluorescent compounds in plastic plates or films, wherein the fluorescent compounds used are those of the formula ##STR1## where Z is .dbd.N-- or .dbd.CH--, Y is --OSO.sub.2 R.sup.1, ##STR2## --OCOR.sup.1 or --OR.sup.3, or 2 Y together are ##STR3## where R is alkyl, X is fluorine, chlorine, C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.20 -alkenyl, aralkyl, --COR.sup.1, --SO.sub.2 R.sup.1, --OPO(OR.sup.2).sub.2, --NH--COR.sup.1 or --NH--SO.sub.2 --R.sup.1, m is 2, 3 or 4, n is 0, 1 or 2, R.sup.1 is unsubstituted or substituted alkyl, alkenyl or an aromatic or heteroaromatic radical and, when Y is --OCOR.sup.1, may furthermore be alkoxy or cycloalkoxy, R.sup.2 is alkyl or cycloalkyl and R.sup.3 is alkyl, alkenyl, C.sub.2 - or C.sub.3 -alkylenecarboalkoxy, alkyl-substituted benzyl or cyclohexyl or a monocyclic, bicyclic or polycyclic saturated hydrocarbon radical. Some of the compounds I and II are new. The compounds I and II exhibit fluorescence in the range from 580 to 750 nm, and have a very high fluorescent quantum efficiency, particularly good light fastness and high thermostability.
A compound of the formula ##STR84## where Z is .dbd.N-- or .dbd.CH--, Y.sup.1 is --OSO.sub.2 R.sup.1, ##STR85## or OR.sup.3, X.sup.1 is fluorine, chlorine, C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.20 -alkenyl, aralkyl, --COR.sup.1, --SO.sub.2 R.sup.1, ##STR86## --NH--COR.sup.1 or --NH--SO.sub.2 R.sup.1, m is 2, 3 or 4, n is 0, 1 or 2, R.sup.1 is unsubstituted or fluorine-substituted C.sub.1 -C.sub.20 -alkyl, C.sub.3 -.sub.20 -alkenyl, or unsubstituted C.sub.1 -C.sub.18 -alkyl-substituted phenyl, R.sup.2 is C.sub.1 -C.sub.18 -alkyl, or is cyclohexyl which is substituted by 1 or 2 C.sub.3 -C.sub.10 -alkyl radicals or is a saturated monocyclic, bicyclic or polycyclic C.sub.7 -C.sub.30 -hydrocarbon radical, R.sup.3 is C.sub.4 -C.sub.20 -alkenyl or C.sub.2 - or C.sub.3 -alkylenecarbo-C.sub.1 -C.sub.20 -alkoxy, or is C.sub.3 -C.sub.20 -alkyl-substituted benzyl, or is cyclohexyl which is substituted by 1 or 2 C.sub.3 -C.sub.10 -alkyl radicals, or is V or a radical of the formula ##STR87## R.sup.11 is C.sub.4 -C.sub.20 -alkyl or is cyclohexyl which is substituted by 1 or 2 C.sub.3 -C.sub.10 -alkyl radicals or is a saturated monocyclic, bicyclic or polycyclic C.sub.7 -C.sub.30 -hydrocarbon radical, and V is C.sub.8 -C.sub.19 -alkyl, 4-(C.sub.3 -C.sub.20 -alkyl)-phenyl or a saturated monocyclic, bicyclic or polycyclic C.sub.7 -C.sub.30 -hydrocarbon radical.
Dependencies are inferred from the claim text.