| 摘要 |
PCT No. PCT/EP95/00404 Sec. 371 Date Aug. 12, 1996 Sec. 102(e) Date Aug. 12, 1996 PCT Filed Feb. 4, 1995 PCT Pub. No. WO95/21604 PCT Pub. Date Aug. 17, 1995An oxidative coloring composition for coloring human hair cointaining an oxidation dye precursor in a water-containing carrier, wherein the dye precursor comprises 1,2,3,4-tetrahydroquinoxalines corresponding to formula (I): <IMAGE> (I) in which R1, R2 and R3 independently of one another represent hydrogen, C1-4 alkyl groups, benzyl groups, 2-phenylethyl groups or C2-4 hydroxyalkyl groups and X, Y and Z represent hydrogen, fluorine, chlorine, bromine or iodine atoms or C1-4 alkyl groups, and wherein at least one of the groups X, Y and Z is hydrogen./!
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