NEW DISAZO DYESTUFFS NEW DISAZO DYESTUFFS

摘要

1386625 Reactive disazo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 7 May 1973 [14 June 1972] 27744/72 Heading C4P New reactive disazo dyes of formula wherein B is a 1,4-phenylene radical which may be substituted by CH 3 , OCH 3 , NHCOCH 3 or NHCONH 2 or a 1,4-naphthylene radical which may be substituted, and Z is NH 2 or OCH 3 , are prepared by condensing an appropriate aminodisazo dye with 2,4-dichloro-6-methoxy- or -amino-s-triazine or with cyanuric chloride followed by reaction with NH 3 . The dyes are used to colour cellulose fibres by the usual reactive dyeing processes in brown shades.