.alpha.-(N-alkyl-4-formylanilino)-toluenesulfonamides

Details .alpha.-(N-alkyl-4-formylanilino)-toluenesulfonamides .alpha.-(N-alkyl-4-formylanilino)-toluenesulfonamides

1976-02-12

1977-02-15

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260556AR, C07C12178, C07C12180, C07C14378

Patent

active

040082628

ABSTRACT:
Water insoluble disperse dyes for aromatic polyester textile material are made by the reaction of an aldehyde intermediate derived from an .alpha.-(N-alkylanilino)-m-toluenesulfonamide, typified by .alpha.-(N-ethylanilino)-m-toluenesulfonamide, with a nitrile containing an active methylene group, such as malononitrile. This class of dyes, when appropriately dispersed, produces bright greenish-yellow dyeings on aromatic polyester fabrics with excellent substantivity, outstanding sublimation fastness, and excellent fastness to light. The dyes are applied to polyesters, such as polyethylene terephthalate, by carrier dyeing, pressure dyeing and thermofixation methods.

REFERENCES:
patent: 3390168 (1968-06-01), Brack
patent: 3756778 (1973-09-01), Genta

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