Laked triscationic polymethine dyes

摘要

Laked triscationic polymethine dyes I <IMAGE> where A is the radical of a benzene or naphthalene nucleus which is fused to the heterocycle and which can carry up to three of the following substituents: C1-C12-alkyl groups whose carbon chain can be interrupted by oxygen atoms in ether function, C1-C12-alkoxy, phenyl, phenoxy, phenylthio, cyano, amino, mono(C1-C12-alkyl)amino, di(C1-C12-alkyl)amino, hydroxyl or halogen; Y is nitrogen or phosphorus; R denotes identical or different ones of the following radicals: C1-C18-alkyl groups whose carbon chain can be interrupted by oxygen atoms in ether function and which can carry up to three of the following substituents: carboxyl, C1-C4-alkanoyl, C1-C4-alkoxycarbonyl, C1-C4-alkanoylamino, C1-C4-alkoxycarbonylamino, acryloyloxy, methacryloyloxy, phenyl, amino, cyano, hydroxyl or halogen; phenyl or C5-C7-cycloalkyl groups which can each carry up to three of the following substituents: C1-C4-alkyl, C1-C4-alkoxy or halogen; m is from 1 to 10; Z is -NR<1>-; -O-; -S-; -C(CH3)2- or -CH=CH; where R<1> is one of the radicals R of the type defined; D is -CX<1>=; -CH=CX<1>-CH=; <IMAGE> where X<1> is nitrogen, chlorine, bromine or C1-C6-alkyl; X<2> is chlorine, cyano, C1-C12-alkoxy or C1-C12-alkylthio; X<3> is hydrogen or C1-C6-alkyl; Het<(-)> is the equivalent of a heteropolyacid anion.