CPC Subgroup
C09B 31/02 Disazo dyes
Full Title
Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling > Disazo dyes
6 direct subcodes
Child Classifications
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- C09B 31/04 from a coupling component "C" containing a directive amino group
- C09B 31/06 from a coupling component "C" containing a directive hydroxyl group
- C09B 31/08 from a coupling component "C" containing directive hydroxyl and amino groups
- C09B 31/10 from a coupling component "C" containing reactive methylene groups
- C09B 31/12 from other coupling components "C"