Patent classifications
C
CHEMISTRY; METALLURGY
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C09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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C09B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; , e.g. PIGMENTS; MORDANTS; LAKES
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44/00
Azo dyes containing onium groups
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C09B44/10
containing cyclammonium groups attached to an azo group by a carbon atom of the ring system
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C09B44/16
1,3-Diazoles or hydrogenated 1,3-diazoles; ; (Benz)imidazolium
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