| abstract |
PCT No. PCT/EP94/01247 Sec. 371 Date Oct. 30, 1995 Sec. 102(e) Date Oct. 30, 1995 PCT Filed Apr. 21, 1994 PCT Pub. No. WO94/24989 PCT Pub. Date Nov. 10, 1994A process for coloring keratin-containing fibers by contacting the fibers with a composition containing an isatin derivative corresponding to formula I: <IMAGE> (I) wherein R1 is hydrogen, a C1-4 alkyl group, a C2-4 hydroxyalkyl group, a C2-20 acyl group, a benzyl or phenyl group, R2 is hydrogen, a C1-4 alkyl group, a C1-4 alkoxy group, a hydroxy, halogen or nitro group, X is a sulfo group -SO3H or a carboxyl group -COOH and n is an integer from 0 to 3, including water-soluble salts thereof. |