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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29/00
Monoazo dyes prepared by diazotising and coupling
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C09B29/0025
from diazotized amino heterocyclic compounds
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C09B29/0029
the heterocyclic ring containing only nitrogen as heteroatom
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C09B29/0048
containing a six-membered heterocyclic ring with one nitrogen atom
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