ClassID:

102164

C09B33/26 - CPC Classification

Classification description:

Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling; Trisazo or higher polyazo dyes Tetrazo dyes of the type A->B->C->K<-D

Recent Application in this class: