2,5-diaminopyridine oxidation bases for the dyeing of...

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

Reexamination Certificate

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C008S406000, C008S408000, C008S409000, C008S410000, C008S411000, C008S421000, C008S568000, C008S602000, C546S249000, C546S250000

Reexamination Certificate

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06837908

ABSTRACT:
Dyeing compositions for the dyeing of keratin fibers comprising at least one oxidation base chosen from formula (I), as defined herein and addition salts thereof. The use of the compositions for the dyeing of keratin fibers. Dyeing processes employing the compositions. Novel 2,5-diaminopyridine compounds and addition salts thereof and their use as oxidation bases.

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Co-pending Application No. 10/291,481; Title: Use of an Extract ofMyrsine Africanain Oxidation Dyeing for Dyeing Keratin Fibres Inventor(s): Béatrice Belcour-Castro et al. U.S. Filing Date: Nov. 14, 2002.

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