Polyaminoalkylenesulfonamidated disazo colorants
AssigneeSterling Drug Inc.
InventorNathan N. Crounse
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Abstract
This invention relates to novel mixtures consisting essentially of monoazo compounds and disazo compounds which are substituted with x (N-substituted sulfonamido) groups, to acid-addition salts of said azo compounds, useful as direct dyes particularly in the dyeing of cellulose, and to methods of preparation of said mixtures of (N-substituted sulfonamido) substituted monoazo and disazo compounds.
Claims3
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,
- Y represents a moiety selected from the class having the formulas ##STR26## 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, ##STR27## in which alkylene represents --CH.sub.2 CH.sub.2 --and --CH.sub.2 CH.sub.2 CH.sub.2 --,
- R.sup.2 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 disazo compounds.
Dependencies are inferred from the claim text.