Dyeing of keratin fibers with indolines using metal salts as...

Details Dyeing of keratin fibers with indolines using metal salts as... Dyeing of keratin fibers with indolines using metal salts as...

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) A61K 8/49 (2006.01) A61Q 5/10 (2006.01) A61K 7/13 (1990.01)

Patent

CA 2132295

2132295 9318738 PCTABS00025 Natural-acting oxidation colourings of keratin fibres in the brown-black range are achieved using indolines of formula (I) as primary oxidation dyes, wherein R1, R2, R3, R4 and R5 independently of each other represent hydrogen or alkyl groups with 1-4 C atoms, or R4 and R5 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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