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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C09B44/10
containing cyclammonium groups attached to an azo group by a carbon atom of the ring system
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C09B44/18
having three nitrogen atoms as the only ring hetero atoms
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C09B44/18

AGENTS FOR DYEING KERATIN FIBRES, CONTAINING AT LEAST ONE DIMERIC, DICATIONIC AZO DYE WITH SPECIAL SUBSTITUTION PATTERN
20170266093 · 2017-09-21 · ·

The disclosure relates to agents for dyeing keratin fibers, in particular human hair, containing, in a cosmetic carrier (a) at least one direct dye of formula (I), wherein Het1, Het2 represent cationic heterocycles; R1, R3 respectively represent a substitute which is not hydrogen, and Q represents a grouping of formula (VIII), (IX), or (X).