Agents for dyeing keratin fibers, containing at least one dimeric, ring-bridged azo dye

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United States of America Patent

PATENT NO 9889321
SERIAL NO

15528532

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present 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 Het 1, Het 2 represent a cationic heterocycle, and A1, A2, independently of one another, represent a grouping of formulas (VIII) or (IX), wherein n represents a whole number of between 2-6, and m, p, independently of one another, represent the numbers 2 or 3.

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Patent Owner(s)

  • HENKEL AG & CO. KGAA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gebert-Schwarzwaelder, Antje Neuss, DE 30 14
Giesa, Helmut Meerbusch, DE 15 8
Moch, Melanie Dormagen, DE 26 9

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