IPC Subgroup
C09B 31/16 Trisazo dyes
Introduced: September 1968
Last revised: January 2006
Full Title
Disazo or polyazo dyes of the type A → B → C, A → B → C → D, or the like, prepared by diazotising and coupling > Trisazo dyes
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- Subclass:
- ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
5 direct subcodes
Child Classifications
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- C09B 31/18 from a coupling component "D" containing a directive amino group
- C09B 31/2 from a coupling component "D" containing a directive hydroxy group
- C09B 31/22 from a coupling component "D" containing directive hydroxy and amino groups
- C09B 31/24 from a coupling component "D" containing reactive methylene groups
- C09B 31/26 from other coupling components "D"