Patent ID: 7066969

Claim:
A compound of the formula in which A represents a benzoic acid residue which is unsubstituted or substituted by one or more hydroxy, halogen, amino, nitro, C 1 –C 4 alkyl, C 1 –C 4 alkoxy, C 2 –C 4 hydroxyalkoxy, COOC 1 –C 4 aIkyl or NHCOC 1 –C 4 alkyl groups, a naphthalene sulphonic acid residue which is unsubstituted or substituted by one or more hydroxy, halogen, amino, nitro, C 1 –C 4 alkyl, C 1 –C 4 alkoxy, C 2 –C 4 hydroxyalkoxy, COOC 1 –C 4 alkyl or NHCOC 1 –C 4 alkyl groups or a naphthoic acid residue which is unsubstituted or substituted by one or more hydroxy, halogen, amino, nitro, C 1 –C 4 alkyl, C 1 –C 4 alkoxy, C 2 –C 4 hydroxyalkoxy, COOC 1 –C 4 alkyl or NHCOC 1 –C 4 alkyl groups; D 1 and D 2 , independently represent i) a residue of the formula —NR 1 BX (3), in which B represents a C 2 –C 8 alkylene bridge which may be interrupted by a heteroatom, whereby C 3 –C 8 alkylene is branched or unbranched, a C 2 –C 6 alkylene bridge which is substituted by one or more hydroxy groups, a C 1 –C 8 alkylene-1,3- or -1,4-phenylene bridge or a 1,3- or -1,4-phenylene bridge; R 1 represents hydrogen or C 1 –C 4 alkyl unsubstituted or mono-substituted by hydroxy, haiogen, cyano or C 1 –C 4 alkoxy; X is a group of the formula —NR 2 R 3 , wherein R 2 and R 3 , independently, represent hydrogen, C 1 –C 4 alkyl, C 2 –C 6 alkyl which is mono-substituted by hydroxy or by cyano, phenyl or C 1 –C 4 alkylphenyl, whereby the phenyl ring of the latter two groups is unsubstituted or substituted by up to three groups selected from hydroxy, halogen, C 1 –C 4 alkyl and C 1 –C 4 alkoxy or, alternatively, R 2 and R 3 , together with the nitrogen atom to which they are connected, complete a saturated, 5- or 6-membered ring which may contain, in addition to the nitrogen atom, one nitrogen or oxygen atom and which may be further substituted or, alternatively, X is a group of the formula —N + R 4 R 5 R 6 , wherein R 4 , R 5 and R 6 each, independently, represent C 1 –C 4 alkyl, C 2 –C 6 alkyl which is mono-substituted by hydroxy or by cyano, phenyl or C 1 –C 4 alkylphenyl, whereby the phenyl ring of the latter two groups is unsubstituted or substituted by up to three groups selected from hydroxy, halogen, C 1 –C 4 alkyl and C 1 –C 4 alkoxy or, ii) alternatively, D 1 and D 2 , independently represent a 5 -or 6-membered, saturated heterocyclic ring connected by way of a nitrogen atom to the triazine ring and which ring may contain, in addition to the nitrogen atom, one further nitrogen or oxygen atom and which may be further substituted, whereby the nitrogen atom may be quaternised with a residue R 4 or be substituted with a C 2 –C 6 alkyltrialkyl-ammonium residue, R 4 being as previously defined, and n is 0 or 1, the compound being in an internal or external salt form, or mixtures of compound (1) and (2).