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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C09B29/06
from coupling components containing amino as the only directing group
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C09B29/0807
characterised by the amino group
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C09B29/0811
further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino
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C09B29/0813
substituted by OH, O-C(=X)-R, O-C(=X)-X-R, O-R (X being O,S,NR; R being hydrocarbonyl)
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C09B29/0813

Azo direct dyes and method for dyeing hair using these dyes
09587116 · 2017-03-07 · ·

A compound of formula (I) or (II) or (III): ##STR00001##
wherein R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.8 and R.sub.8 are as defined herein. This compound can be used in a composition for the dyeing of fibers.