Disazo compounds for dyeing cellulosic fibers
 Water-soluble azo compounds which, in the free acid form, are represented by the formula: ##STR1## wherein one of X and Y is hydrogen and the other is --SO.sub.3 H; one of A and B is hydrogen and the other is --SO.sub.3 H; each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is independently hydrogen, methyl group, ethyl group, methoxy group, ethoxy group, acylamino group or ureido group; and each of R.sub.5 and R.sub.6 is independently hydrogen, methyl group, ethyl group, methoxy group, ethoxy group, acylamino group, chlorine, hydroxyl group or carboxyl group, and a method for dyeing cellulose fibers, blended yarn fabrics of cellulose fibers with other kinds of fibers, particularly with polyester fibers, using the said compounds. 
Nippon Kayaku Kabushiki Kaisha
C C C C C
C09B C09B C09B C09B C09B
inventional inventional inventional inventional inventional
Junji Shigeyuki
Odani Watanabe