6-alkoxy-2,3-diaminopyridine couplers in which the amino...

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, C008S408000, C008S409000, C008S410000, C008S421000, C008S568000, C008S602000, C546S249000, C546S250000

Reexamination Certificate

active

10678649

ABSTRACT:
The invention relates to a dye composition that is useful for dyeing keratin fibers, containing at least one oxidation base and at least one coupler of the 6-alkoxy-2,3-diaminopyridine type in which the amino radical in position 2 is a disubstituted amino radical, to the use of this composition for dyeing keratin fibers and to the dyeing process using this composition.The invention also relates to novel 6-alkoxy-2,3-diaminopyridine compounds that are useful as couplers.

REFERENCES:
patent: 4784667 (1988-11-01), Maak et al.
patent: 5785717 (1998-07-01), Maubru et al.
patent: 6692540 (2004-02-01), Audousset
patent: 2001/0023514 (2001-09-01), Cottard et al.
patent: 2002/0013973 (2002-02-01), Plos
patent: 32 33 540 (1984-03-01), None
patent: 41 15 148 (1992-11-01), None
patent: 199 36 442 (2001-02-01), None
patent: 0 728 464 (1996-08-01), None
patent: 1 397 551 (1965-03-01), None
patent: 2 779 952 (1999-12-01), None
patent: WO 99/66894 (1999-12-01), None
English Abstract of the Patent DE 199 36 442 A1.
Database Chemlist en ligne! 154036, XP002243965.
English language Derwent Abstract of DE 41 15 148 A1, Nov. 12, 1992.
English language Derwent Abstract of DE 199 36 442 A1, Feb. 8, 2001.
English language Derwent Abstract of FR 2 779 952, Dec. 24, 1999.

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