Monoazo dyes based on 2-7-(2'-sulpho-phenylazo)-8-hydroxy-3,6-disulphonaphthylamino-4,6-disubstituted-triazine skeleton for use in inks

摘要

A Monoazo compounds of the Formula (1) and salts thereof are disclosed: wherein each of R 1 and R 2 , independently, represents H, halogen, alkyl, alkoxy or acylamino; each of R 3 , R 4 and R 5 , independently, represents H or optionally substituted hydrocarbyl (other than groups that are or include the residue -A-NR 7 R 8 wherein A represents an optionally substituted alkylene group containing 2 or more carbon atoms and each of R 7 and R 8 , independently, represents H or optionally substituted hydrocarbyl or R 7 and R 8 together with the attached nitrogen atom form a 5- or 6-membered ring) and R 6 represents an optionally substituted hydrocarbyl group not being or including) the residue -A-NR 7 R 8 (wherein A, R 7 and R 8 are as defined above); or R 3 and R 4 together with the attached nitrogen atom and/or R 5 and R 6 together with the attached nitrogen atom form a 5- or 6-membered ring other than a piperazine ring; the compounds of Formula (1) being free from fibre-reactive groups and any carboxyl substituents present in the compounds being attached in the form of one or more residue of the following formulae: Are disclosed are ink compositions comprising the above compounds; a process for printing substrates with the ink compositions using an ink-jet printer; paper, project slides and textile materials printed with the ink compositions; and a process for coloration of textile materials with the ink compositions.