Patent ID: 7381806
Filing Date: 2008-06-03
Classification: A61K,A61Q,C09B,Y10S

Abstract:
1. A cationic azo azine dye of the generic formula (I), where R1 is selected from residues having the formulas (II), (III), (IV), (V), and (VI), R2, R4, and R5 can be the same or different and independently from one another are selected from residues having the formulas (VII), (VIII), and (IX); R3, R3′, R6, R6′, R7, R7′, and R8 can be the same or different and independently from one another equal hydrogen, a C 1 -C 6 -alkylamine group, a C 1 -C 6 -N,N-dialkylamino group, a C 1 -C 6 -N,N-dihydroxyalkylamino group, a C 1 -C 6 -N-hydroxyalkyl-N-alkylamino group, a C 1 -C 6 -alkylcyano group, a nitro group, a cyano group, an amino group, a nitroso group, a hydroxyl group, a methoxymethyl group, a tert-butyl group, an iso-propyl group, a C 1 -C 6 -alkyl group, a C 1 -C 6 -alkyloxy group, a C 1 -C 6 -hydroxyalkyl group, a C 1 -C 6 -alkylcarboxylic acid group, a C1-C 6 -alkylcarboxylic acid ester group, a C 1 -C 6 -alkylsulfonic acid group, a C 1 -C 6 -alkylsulfonic acid ester group, or an —N-(L)-B + -group; L stands for a C 1 -C 6 alkylene group and B + represents a) an aromatic, heterocyclic quaternary ammonium compound or b) a nonaromatic heterocyclic quaternary ammonium compound, or c) a quaternary alkylammonium compound or arylammonium compound of the formula NR a R b R c , where R a , R b , and R c independently from one another indicate a benzyl residue, a phenyl residue or a C 1 - to C 6 -alkyl residue, an ethyl residue, a propyl residue, an isopropyl residue or a butyl residue, where the above-named alkyl residues can be unsubstituted or substituted with one or more hydroxyl groups or amino groups, or d) a quaternary phosphonium group; R9 equals a branched or linear C 1 -C 6 -alkyl group, a branched or linear C 2 -C 4 -hydroxyalkyl group or a branched or linear C 4 -C 6 -polyhydroxyalkyl group; and X − is an anion; provided that at least one of the residues R1, R2, and R3 contains at least one cationic group.