摘要 |
Natural-acting oxidation colourings of keratin fibres in the brown-black range are achieved using indolines of formula (I) as primary oxidation dyes, wherein R<1>, R<2>, R<3>, R<4> and R<5> independently of each other represent hydrogen or alkyl groups with 1-4 C atoms, or R<4> and R<5> together with the oxygen atoms to which they are bound represent an alkylene dioxy group with 1-4 C atoms, or the salts thereof produced by oxidation with atmospheric oxygen without using additional oxidizing agents, if the colourless, non-toxic salts of lithium, magnesium, calcium, aluminium or zinc are used as oxidizing catalysts.
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申请人 |
HENKEL KGAA, 40589 DUESSELDORF, DE |
发明人 |
KNUEBEL, GEORG, DR., 4000 DUESSELDORF, DE;HOEFFKES, HORST, DR., 4000 DUESSELDORF, DE;NEUHAUS, WINIFRIED, 4020 METTMANN, DE;LIESKE, EDGAR, 4000 DUESSELDORF, DE |