Patent ID: 6043349
Filing Date: 2000-03-28
Classification: C09B,Y10S

Abstract:
A tetrakisazo dye of formula ##STR18## wherein one of the two symbols --X and --Y signifies --OH and the other signifies --NH.sub.2,Z signifies a radical of formula--W.sub.1 --N.dbd.N--B.sub.2 (.alpha.)or, if Y signifies --OH, also a radical of formula--W.sub.2 --N.dbd.N--D (.beta.)Q.sub.1 signifies --SO.sub.2 -- or --CO--,Q.sub.2 signifies the direct bond or, if Q.sub.1 is --SO.sub.2 --, also a group --SO.sub.2 --,B.sub.1 signifies the radical of a coupling component H--B.sub.1,B2 signifies the radical of a coupling component H--B.sub.2,D signifies the radical of a diazo component D--NH.sub.2,W.sub.1 signifies the radical of a bicyclic bisdiazo component,W.sub.2 signifies the radical of a bicyclic middle component, andM signifies hydrogen or a cation,or a mixture of two or more tetrakisazo dyes of formula (I).