Disazo dyestuffs

Abstract

Abstract Disazo dyestuffs of the formula: ##SPC1## Wherein B represents 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 by OCH 3 or SO 3 H, and Z represents NH 2 or OCH 3 , and their manufacture by conventional condensation methods. These dyes are brown cellulose-reactive dyes, (including bluish-brown, orange-brown and reddish-brown shades) which exhaust well on to the fibre from saline dyebaths with high fixation of the absorbed dye, so that deep shades of high tinctorial strength can be obtained; the resulting shades have excellent fastness to light and to washing tests, in which latter there is a remarkably low level of staining, and above all, excellent fastness to bleach treatments.

Inventors

• 👤 Peter Gregory

Bibliographic Details