N-Aminoalkylenesulfonamido substituted monoazo colorants

A mixture consisting essentially of a monoazo compound which is substituted with an average of x (N-substituted sulfonamido) groups per molecule wherein said monoazo compound is of the formula ##STR25## in which x represents a number from 1 to 4,

• R represents hydrogen or the moiety ##STR26## in which R.sup.4 is hydrogen, C.sub.1 to C.sub.3 alkoxy or C.sub.1 to C.sub.3 alkyl,
• R.sup.1 represents a moiety selected from the group consisting of
• alkylene-NH-alkylene-NH.sub.2,
• alkylene-N-(C.sub.1 to C.sub.4 alkyl).sub.2, ##STR27## in which alkylene represents --CH.sub.2 CH.sub.2 -- and --CH.sub.2 CH.sub.2 CH.sub.2 --,
• R.sup.3 represents hydrogen, C.sub.1 to C.sub.3 alkyl or C.sub.1 to C.sub.3 alkoxy;
• or
• the acid-addition salt forms of said mixtures of monoazo compounds.