To the oligomeric cationic azo dye, a salt, isomer, hydrate or solvate of the formula (I) are described:(One)Among way,R 1 is hydrogen One or more C 1 -C 5 alkyl, C 1 -C 5 - alkoxy, hydroxy, or - C 1 -C 12 which may be substituted by (CO) -H-alkyl - -C 1 -C 5 alkyl (CO) Phenyl or phenyl -C 1 -C 4 alkyl, wherein the phenyl moiety is C 1 -C 5 alkyl or more 1, C 1 -C 5 alkoxy, halogen, -NH 2, -C 1 -C 5 mono-alkylamino, di- C 1 -C 5 alkylamino, -NO 2, and may be substituted by carboxy or hydroxyR 2 is hydrogen Or C 1 -C 5 alkylX is one or more C 1 -C 5 alkyl, hydroxy, C 1 -C 5 - alkoxy, amino, mono -C 1 -C 5 alkylamino, di -C 1 -C 5 alkyl amino, optionally substituted by a -SH and C 1 -C number that can be divided by, and / or one or more -O- or -SS- 10 alkylene C 5 -C 10 cycloalkylene C 5 -C 12 arylene C 5 -C 12 arylene - (C 1 -C 10 alkylene) One or more C 1 -C 5 alkyl, hydroxy, C 1 -C 5 - alkoxy, amino, mono -C 1 -C 5 alkylamino, di -C 1 -C 5 alkylamino, may be substituted by -SH and / or one or more -O-, C 1 -C 4 - alkylene, -NR 3 -, -S- or a biphenylene which can be divided by a -SS-R 3 is hydrogen C 1 -C 12 alkyl C 2 -C 14 alkenyl C 6 -C 12 aryl C 6 -C 12 aryl -C 1 -C 12 alkyl C 1 -C 12 alkyl or -C 6 -C 12 arylY is an anionZ is 1,3-thiazolyl 1,2-thiazolyl 1,3-benzothiazolyl 2,3-benzothiazolyl Imidazolyl 1,3,4-thiadiazolyl 1,3,5-thiadiazolyl 1,3,4-triazolyl Pyrazolyl Benzimidazolyl Benzo-pyrazolyl Pyridinyl Quinolinyl Pyrimidinyl, or an iso-oxazolyl In additionn is the number of 2-100.The invention also relates to their use for dyeing the compositions thereof, and the hair, including the novel oligomeric cationic azo dyes, in particular other dyes.Oligomer, a cationic azo dye, the hair dyeing, the dye, the keratin-containing fiber하기 화학식(1)의 올리고머성 양이온 아조 염료, 그의 염, 이성질체, 수화물 또는 그의 용매화물이 기재되어 있다:(1)식 중에서,R1은 수소 1 이상의 C1-C5알킬, C1-C5-알콕시, 히드록시 또는 -(CO)-H에 의해 치환될 수 있는 C1-C12알킬 -(CO)-C1-C5알킬 페닐 또는 페닐-C1-C4알킬이고, 이때 페닐 잔기는 1 이상의 C1-C5알킬, C1-C5알콕시
