Aliphatic alpha, omega-diamine compounds and their use in hair dyeing
AssigneeL'oreal
InventorsAlex Junino, Alain Genet, Gerard Lang
Life of this patent
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Abstract
The invention relates to the new compounds consisting of N,N'-bis(.beta.-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diamino-2-propa nol and N,N'-bis(ethyl)-N,N'-bis(4'-amino-3'-methylphenyl)ethylenediamine, and their use in keratinous fiber dyeing compositions and processes.
Claims8
N,N'-B is(.beta.-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diamino-2-propanol or one of its addition salts with acids.
N,N'-Bis(ethyl)-N,N'-bis(4'-amino -3'-methylphenyl)-ethylenediamine or one of its addition salts with acids.
A composition for dyeing keratinous fibres, in particular for hair, comprising, an effective concentration of an oxidation dye precursor selected from the group consisting of N,N'-bis(.beta.-hydroxyethyl) -N,N'-bis (4'-aminoinophenyl)-1,3-diamino -2-propanol, N,N'-bis(ethyl)-N,N-40 -bis (4'-amino-3'-methylphenyl)ehtylenediamine, acid addition salts of N,N'-bis(.beta.-hydroxyethyl) -N,N'-bis (4'-amino-phenyl)-1,3-diamino -2-propanol and N,N'-bis(ethyl)-N,N'-bis(4'-amino-3'-methylphenyl) ethylenediamine and a carrier suitable for dyeing said fibres, wherein said effective concentration is sufficient, upon oxidative coupling of said precursor, to dye said fibres.
Dependencies are inferred from the claim text.