IPC Main Group
C09B 44/00 Azo dyes containing onium groups
Introduced: January 1980
Last revised: January 2006
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
2 direct subcodes
Child Classifications
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- C09B 44/02 containing ammonium groups not directly attached to an azo group
- C09B 44/1 containing cyclammonium groups attached to an azo group by a carbon atom of the ring system