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PCE
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DIFF Subgroup
C09B 33/048

the coupling component being a bis-naphthol

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Disazo or polyazo dyes of the types A → K ← B, A → B → K ← C, or the like, prepared by diazotising and coupling > Disazo dyes > in which the coupling component is a dihydroxy or polyhydroxy compound > the coupling component being a bis-naphthol

CPC:

Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling > Disazo dyes > in which the coupling component is a dihydroxy or polyhydroxy compound > the coupling component being a bis-naphthol

No child classifications to compare. This is a leaf node in both IPC and CPC.