| abstract |
Oxidn. dye-based hair-dyeing compsns. contain new carbazole- or dibenzofuran derivs. of formula (I) or their salts, as coupling components, and standard developers. In the formula, X is -O- or NR; R is H, Me, Et, propyl, butyl, -(CH2)1-3 -OH or N-(CH2)1-3-N(1-4C-alkyl)2). Fast yellow-brown to violet shades can be achieved. (I) have good solubility in water, resist storage, are nontoxic and do not irritate the skin. The hair dye compsns. can be used as creams, emulsions, gels or solns., at pH 8-10, 15-40 degrees C. A specifically claimed cpd. (I) (of 5) is 1,3,6,8-tetraaminocarbazole. |