Yellow methine dyes for hydrophobic textile material

Details Yellow methine dyes for hydrophobic textile material Yellow methine dyes for hydrophobic textile material

C - Chemistry, Metallurgy

09

B

8/31.09, 260/247

C09B 57/00 (2006.01) C08K 5/43 (2006.01) C09B 23/14 (2006.01) D06P 1/00 (2006.01)

Patent

CA 1085843

ABSTRACT OF THE DISCLOSURE Water insoluble disperse dyes for aromatic polyester textile material are made by the reaction of an aldehyde inter- mediate derived from an .alpha.(N alkylanilino)-m-toluenesulfonamide, typified by .alpha.-(N-ethylaninino)-m-toluenesulfonamide, with a nitrile containing an active methylene group, such as malononi- trile. 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.

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