Cationic dyes and dyestuff for keratin fibres containing...

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing

Reexamination Certificate

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Details

C008S406000, C008S435000, C008S570000, C008S606000, C548S371400

Reexamination Certificate

active

07455698

ABSTRACT:
4-(Pyrazol-4-ylimino)-2,5-cyclohexadienylidene-ammonium salts of the general formula(I)and colorants comprising these compounds for keratin fibres.

REFERENCES:
patent: 5430159 (1995-07-01), Neunhoeffer et al.
patent: 5931973 (1999-08-01), Malle et al.
patent: 1 398 021 (2004-03-01), None
STIC Search Report dated Aug. 7, 2008.
Hennig et al: “Azomethine, Azo and . . . ” Jul. 14, 1986, Chemical Abstracts + Indexes, American Chemical Socienry. Columbus, US p. 78 (In English).

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