Yamada, Kimiho; Shinomiya, Chiro published an article in 1959, the title of the article was Dyeing of fibers difficult to dye. VIII. Condensation-dyeing by active halo compound with free amines.Electric Literature of 97-09-6 And the article contains the following content:
By using 14 halo compounds and 15 amino compounds, the reactivity and the dyeing property for several kinds of fibers were studied. Condensation-dyeing of this system have small hue variations. Strong basic amines having conjugate systems throughout the mol. are better than the others. Halo compounds containing suitable soluble radicals are good for nylon, Vinylon, and wool, and also the one having the active halo radical at the side chain showed excellent results. Each kind of fiber is deeply dyed, but, in general, cotton is more difficult to dye than the others. Of halo compounds, the hydrolytic constant and the reactivity with benzidine in H2O are; 2-chloro-5-nitrobenzenesulfonic acid > picryl chloride > 2-chloro-3,5-dinitrobenzoic acid > 2,4-dinitrochlorobenzene > 2-chloro-4-nitrobenzenesulfonic acid > 2-chloro-4-nitrobenzoic acid > 4-chloro-3-nitrobenzenesulfonamide. The experimental process involved the reaction of 3-Nitro-4-chlorobenzenesulfonamide(cas: 97-09-6).Electric Literature of 97-09-6
3-Nitro-4-chlorobenzenesulfonamide(cas:97-09-6) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. Electric Literature of 97-09-6
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics