Ink and toner compositions comprising at least four 2,7-bis-({3-(sulphophenylamino)triazinyl}phenylazo)-1-amino-8-hydroxy-3,6-disulphonaphthalene dyes

摘要

An ink composition comprises a medium comprising at least one of a low melting point solid, an organic solvent and a mixture of water and one or more water-soluble organic solvent(s); and a mixture of a first, second, third and fourth dye, each of which is of Formula (1) or a salt thereof: wherein: ```X is a labile or non labile atom or group; ```A and B are each independently an optionally substituted phenylene group; ```one or R 1 and R 2 is H and the other is sulpho; ```one of R 3 and R 4 is H and the other is sulpho; ```R 5 and R 6 are each independently C 1-4 -alkyl. Also claimed is an ink jet printing process using the inks, a process for ink jet printing textile materials using the inks and a toner composition containing a mixture of a first, second, third and fourth dyes of the Formula (1).