| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition for dyeing a keratin fiber, which yields various, extremely strong colors with little unevenness, hardly shows any temporal change and imparts fastness to the color of the fiber. SOLUTION: The composition contains a specific azodiazine direct dye which is aminated at position 7 and is represented by formula (I) (wherein R<SP>1</SP>and R<SP>2</SP>may each be hydrogen atom; R<SP>3</SP>may be a heterocyclic group; P is 0 or 1, provided that when p=0, (z) is a single bond and q=1, and when p=1, (z) is an alkylene group substituted with q×R<SP>3</SP>groups; (q) may be 1-5; R<SP>4</SP>and R<SP>5</SP>may each be an alkyl group; R<SP>6</SP>may be a phenolic group; X and Y may each be a nitrogen atom; and A is an anionic counter ion). A method for dyeing the keratin fiber using the specific direct dye is also provided. COPYRIGHT: (C)2005,JPO&NCIPI
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