N-Aminoalkylenesulfonamido substituted disazo colorants
AssigneeThe Hilton-Davis Chemical Co.
InventorNathan N. Crounse
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Abstract
This invention relates to novel mixtures consisting essentially of benzanilide bridged disazo compounds which are randomly substituted with x (N-substituted sulfonamido) groups, to acid-addition salts of said disazo compounds, useful as direct dyes particularly in the dyeing of cellulose, and to methods of preparation of said mixtures of (N-substituted sulfonamido) substituted disazo compounds.
Claims2
A mixture consisting essentially of a disazo compound which is substituted with an average of x (N-substituted sulfonamido) groups per molecule wherein said disazo compound is of the formula ##STR25## in which x represents a number from 1 to 4, and
- R.sup.1 represents a moiety selected from the group consisting of alkylene-NH-alkylene-NH.sub.2, alkylene-N-(non-tertiary C.sub.1 to C.sub.4 alkyl).sub.2, ##STR26## in which alkylene represents --CH.sub.2 CH.sub.2 -- and --CH.sub.2 CH.sub.2 CH.sub.2 --;
- or
- the acid-addition salt forms of said disazo compounds.
Dependencies are inferred from the claim text.