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PCE
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DIFF Subgroup
C09B 33/18

Trisazo or higher polyazo dyes

Introduced: September 1968

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 > Trisazo or higher polyazo dyes

CPC:

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

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

6 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C09B 33/22 Trisazo dyes of the type A->B->K<-C since 1980 IPC+CPC Available in IPC and CPC
  • C09B 33/24 Trisazo dyes of the type [IMAGE cpc-sch-C09B-1013.gif] since 1980 IPC+CPC Available in IPC and CPC
  • C09B 33/26 Tetrazo dyes of the type A->B->C->K<-D since 1980 IPC+CPC Available in IPC and CPC
  • C09B 33/28 Tetrazo dyes of the type A->B->K<-C<-D since 1980 IPC+CPC Available in IPC and CPC
  • C09B 33/30 Tetrazo dyes of the type [IMAGE cpc-sch-C09B-1014.gif] since 1980 IPC+CPC Available in IPC and CPC
  • C09B 33/32 Tetrazo dyes of the type [IMAGE cpc-sch-C09B-1015.gif] since 1980 IPC+CPC Available in IPC and CPC