Bisazo blue-black dye having vinylsulfone type fiber-reactive gr

Details Bisazo blue-black dye having vinylsulfone type fiber-reactive gr Bisazo blue-black dye having vinylsulfone type fiber-reactive gr

1982-06-04

1985-07-23

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534581, 534582, 534617, 534727, 534730, 534840, 534879, C09B 62503, C09B 62513, D06P 138, D06P 366

Patent

active

045309965

ABSTRACT:
A compound represented by a free acid of the formula: ##STR1## wherein D is ##STR2## (R.sub.1 and R.sub.2 independently represent hydrogen, methyl or methoxy) or ##STR3## (n is 0 or 1, the mark * signifies the position of linkage to --N.dbd.N-- and the mark # signifies the position of linkage to Q mentioned below); Q is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 R (R is a group capable of being split off by the action of alkali); one of X.sub.1 and X.sub.2 is hydrogen and the other is a sulfonic acid group; and m is 0 or 1, which is useful for dyeing cellulose fibers a blue-black color with good dyeability and excellent fastnesses, particularly chlorine fastness.

REFERENCES:
patent: 3135730 (1964-06-01), Heyna et al.
patent: 3457251 (1969-07-01), Meininger et al.

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