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US 5,690,696 AGranted
Combinations of two para-phenylenediamine oxidation bases and a meta-phenylenediamine coupler for the oxidation dyeing of keratinous fibers
AssigneeL'oreal
InventorsEric Bone, Roland De La Mettrie
Life of this patent
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Abstract
A composition for the oxidation dyeing of keratinous fibres, especially human keratinous fibres such as hair, which comprises para-phenylenediamine and/or 2-methyl-para-phenylenediamine and/or acid addition salts thereof in combination with at least one appropriately selected meta-phenylenediamine derivative and/or acid addition salts thereof and at least one appropriately selected tertiary para-phenylenediamine derivative, and/or acid addition salts thereof, and to the dyeing process using this composition.
Claims26
A composition for the oxidation dyeing of keratinous fibres comprising, in a medium appropriate for dyeing:
- from 0.0005 to 10% by weight of the total weight of the dyeing composition of at least one first oxidation base selected from para-phenylenediamine, an acid addition salt thereof, 2-methyl-para-phenylenediamine, and an acid addition salt thereof;
- from 0.0001 to 5% by weight of the total weight of the dyeing composition of at least one coupler selected from meta-phenylenediamine compounds of formula (I) below:
- ##STR4## in which:
- R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 monohydroxyalkyl or C.sub.2 -C.sub.4 polyhydroxyalkyl radical;
- R.sub.2 and R.sub.3, which are identical or different, represent a hydrogen atom or a C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 hydroxyalkoxy radical;
- R.sub.4 represents a C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 aminoalkoxy, C.sub.1 -C.sub.4 monohydroxyalkoxy or C.sub.2 -C.sub.4 polyhydroxyalkoxy radical or a 2,4-diaminophenoxy C.sub.1 -C.sub.4 alkoxy radical, with the proviso that, when R.sub.1 denotes a hydrogen atom, R.sub.2 and R.sub.4 do not simultaneously denote a .beta.-hydroxyethyloxy radical, and that, when R.sub.1, R.sub.2 and R.sub.3 simultaneously denote a hydrogen atom, R.sub.4 is other than methoxy, and acid addition salts of the compounds of formula (I),
- and from 0.0005 to 10% by weight of the total weight of the dyeing composition of at least one second oxidation base selected from para-phenylenediamine compounds of formula (II) below:
- ##STR5## in which:
- R.sub.5 represents a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 monohydroxyalkyl or C.sub.2 C.sub.4 polyhydroxyalkyl radical;
- R.sub.6 represents a C.sub.1 -C.sub.4 monohydroxyalkyl or C.sub.2 -C.sub.4 polyhydroxyalkyl radical;
- R.sub.7 represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy radical or a halogen atom, and acid addition salts of the compounds of formula (II).
8 more elements
Dependencies are inferred from the claim text.