DIFF Subgroup
C09B 31/02 Disazo dyes
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Disazo or polyazo dyes of the type A → B → C, A → B → C → D, or the like, prepared by diazotising and coupling > Disazo dyes
CPC:
Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling > Disazo dyes
Of 6 combined children, 5 exist in both systems.
1 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C09B 31/04 from a coupling component "C" containing a directive amino group +1 CPC IPC+CPC Available in IPC and CPC
- C09B 31/06 from a coupling component "C" containing a directive hydroxyl group +1 CPC IPC+CPC Available in IPC and CPC
- C09B 31/08 from a coupling component "C" containing directive hydroxyl and amino groups IPC+CPC Available in IPC and CPC
- C09B 31/10 from a coupling component "C" containing reactive methylene groups +1 CPC IPC+CPC Available in IPC and CPC