- Dyeing agent for dyeing keratin fibres
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PCT No. PCT/EP97/05336 Sec. 371 Date May 21, 1998 Sec. 102(e) Date May 21, 1998 PCT Filed Sep. 29, 1997 PCT Pub. No. WO98/19659 PCT Pub. Date May 14, 1998The hair dye composition contains a combination of oxidation dye precursors consisting of (a) 2-hydroxymethyl-p-phenylenediamine, 2-(2',5'-diaminophenyl)ethanol and/or 2-(2'-hydroxyethoxy)-p-phenylenediamine, (b) 2-(2',4'-diaminophenoxy)-ethanol, 1,3-bis-(2',4'-diaminophenoxy)propane, bis-(2',4'-diamino-phenoxy)-methane, 2-amino-4-((2'-hydroxyethyl)amino)-anisole, 1-(2'-aminoethoxy)-2,4-diaminobenzene, 2-(2'-hydroxyethoxy)-5-(methylamino)aniline, 2,4-diamino-1,5-bis-(2'-hydroxyethoxy)benzene and/or 1-(2',3'-dihydroxypropoxy)-2,4-diaminobenzene; and (c) at least one 2-amino-6-chloro-4-nitrophenol compound having the general formula (1): wherein R represents hydrogen a straight-or branched-chain alkyl group with 1 to 6 carbon atoms, a hydroxyalkyl group with 2 to 4 carbon atoms or a straight or branched-chain polyhydroxyalkyl group with 3 to 4 carbon atoms. A method of dyeing hair with this hair dye composition is also disclosed, which provides uniform dyeing of hair without mutagenic and sensitizing effects.
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- Oxidation dye composition for keratinous fibres comprising a paraminophenol, a meta-aminophenol and a meta-phenylenediamine, and dyeing process using such a composition
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Oxidation dye composition for keratinous fibers comprising a para-aminophenol, a meta-aminophenol and a meta-phenylenediamine and dyeing process using such a composition. The invention relates to a dyeing composition for keratinous fibers and in particular for human keratinous fibers such as hair, comprising, in a suitable medium for dyeing, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol, and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): STR1 where R denotes hydrogen, methyl, ethyl, β-hydroxyethyl or γ-hydroxypropyl, and their addition salts with an acid; and, as additional coupling agent, at least one meta-phenylenediamine or one of its addition salts with an acid. The invention also relates to a dyeing process implementing development by an oxidizing agent.
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