Dyes containing 6-hydroxypyrid-2-one groups the 1-positions of which contain substituted 1,3,5-triazinyl or pyrimidyl-piperazino or -piperazinium groups linked through bridging radicals and intermediates therefor

摘要: Compounds of the formula ##STR1## and acid addition salts thereof wherein A 1 is C 1-8 alkylene; 2-8 alkylene substituted by or 2 substituents selected from hydroxy, halo cyano; alkenylene; cyclohexylene; cyclohexylene to 3 1-4 alkyl groups; phenylene halo, alkoxy, B ##STR2## quaternized nitrogen atom bound a carbon , R hydrogen, alkyl, 5-6 cycloalkyl, phenyl, benzyl phenylethyl, T cyano, --COOR --CON(R ) --SO N(R ##STR3## 1-6 phenyl(C 1-3 alkyl), each independently --N(R 5 X --S--, --O-- )--, Y hydrogen chromophoric group, Z ##STR4## 11 ##STR5## W --NR 6 7 --.sup.⊕ NR 8 9 10 A.sup.⊖, 12 ##STR6## --O--R 14 --O--A as defined above, 13 15 with proviso that compounds are free sulfo groups. The other than useful for dyeing printing substrates such natural regenerated cellulose, acid-modified polyamide, leather paper.