Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2002-12-20
2004-02-17
Gupta, Yogendra N. (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S407000, C008S408000, C008S421000, C008S540000, C008S547000, C008S552000, C008S554000, C008S555000
Reexamination Certificate
active
06692539
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a composition useful for the oxidation dyeing of keratin fibres, in particular of human keratin fibres and more particularly the hair, comprising, preferably in a medium that is suitable for dyeing, at least one oxidation dye, and also at least one polyoxyalkylenated carboxylic acid ether or a salt thereof, at least one nonionic surfactant and at least one cationic or amphoteric polymer whose cationic charge density is greater than or equal to 2 meq/gram.
The invention also relates to dyeing devices, kits, and processes using the composition.
2. Discussion of the Background
It is known practice to dye keratin fibres, and in particular human hair, with dye compositions containing oxidation dye precursors, generally known as “oxidation bases”, in particular ortho- or para-phenylenediamines, ortho- or para-aminophenols, and heterocyclic bases.
Oxidation dye precursors are compounds that are initially uncoloured or only weakly coloured, which develop their dyeing power on the hair in the presence of oxidizing agents, leading to the formation of coloured compounds. The formation of these coloured compounds results either from an oxidative condensation of the “oxidation bases” with themselves or from an oxidative condensation of the “oxidation bases” with coloration modifiers, or “couplers”, which are generally present in the dye compositions used in oxidation dyeing and are represented more particularly by meta-phenylenediamines, meta-aminophenols and meta-diphenols, and certain heterocyclic compounds.
The variety of molecules used, which consist on the one hand of the “oxidation bases” and on the other hand of the “couplers”, allows a very wide range of colours to be obtained.
These oxidation bases and couplers are formulated in vehicles or supports allowing them to be applied to keratin fibres after mixing with an oxidizing agent.
These vehicles are generally aqueous and usually comprise one or more surfactants.
Thus, it has already been recommended to use fatty acids as anionic surfactant, in combination with a cationic or amphoteric polymer and a nonionic surfactant. The said combinations produce oxidation dye compositions that generate shades with very good dyeing properties. However, the search continues for supports that can further improve the properties of the colorations obtained.
SUMMARY OF THE INVENTION
Thus, after considerable research conducted in this matter, the inventors have now discovered that it is possible to obtain oxidation dye compositions that produce even more powerful and more chromatic shades, by introducing into the dye composition at least one polyoxyalkylenated carboxylic acid ether or a salt thereof, at least one nonionic surfactant and at least one cationic or amphoteric polymer whose cationic charge density is greater than or equal to 2 meq/gram.
DETAILED DESCRIPTION OF THE INVENTION
One subject of the present invention is thus a composition for the oxidation dyeing of keratin fibres, in particular of human keratin fibres and more particularly the hair, comprising, preferably in a medium that is suitable for dyeing, at least one oxidation dye, and wherein it also comprises at least one polyoxyalkylenated carboxylic acid ether or a salt thereof, at least one nonionic surfactant and at least one cationic or amphoteric polymer whose cationic charge density is greater than or equal to 2 meq/gram.
Another subject of the invention relates to a ready-to-use composition for the oxidation dyeing of keratin fibres, which comprises, preferably in a medium that is suitable for dyeing, at least one composition as described above and at least one oxidizing agent.
For the purposes of the present invention, the expression “ready-to-use composition” means the composition intended to be applied immediately to the keratin fibres, i.e. it may be stored before use without further modification, or may result from the extemporaneous mixing of two or more compositions.
The invention is also directed towards a process for the oxidation dyeing of keratin fibres, and in particular of human keratin fibres such as the hair, which consists in applying to the fibres a dye composition comprising, in a medium that is suitable for dyeing, at least one oxidation dye, the colour being developed at alkaline, neutral or acidic pH using an oxidizing composition comprising, in a medium that is suitable for dyeing, at least one oxidizing agent, which is mixed with the dye composition just at the time of use, or which is applied sequentially without intermediate rinsing, the dye composition and the oxidizing composition also comprising, distributed indifferently between the two, at least one polyoxyalkylenated carboxylic acid ether or a salt thereof, at least one nonionic surfactant and at least one cationic or amphoteric polymer whose cationic charge density is greater than or equal to 2 meq/gram.
In one variant of the process, the polyoxyalkylenated carboxylic acid ether(s) or salts thereof, nonionic surfactant(s) and cationic or amphoteric polymer(s) whose cationic charge density is greater than or equal to 2 meq/gram are combined in the same dye composition or oxidizing composition and even more particularly in the dye composition.
A subject of the invention is also a multi-compartment dyeing device or “kit” for the oxidation dyeing of keratin fibres, in particular of human keratin fibres and more particularly the hair, which comprises a compartment containing a dye composition comprising, in a medium that is suitable for dyeing, at least one oxidation dye, and another compartment containing an oxidizing composition comprising, in a medium that is suitable for dyeing, an oxidizing agent, the dye composition and the oxidizing composition also comprising, distributed indifferently between the two, at least one polyoxyalkylenated carboxylic acid ether, at least one nonionic surfactant and at least one cationic or amphoteric polymer whose cationic charge density is greater than or equal to 2 meq/gram.
In one device variant, the polyoxyalkylenated carboxylic acid ether(s) or salts thereof, nonionic surfactant(s) and cationic or amphoteric polymer(s) whose cationic charge density is greater than or equal to 2 meq/gram are combined in the same dye composition or oxidizing composition, and even more particularly in the dye composition.
However, other characteristics, aspects, subjects and advantages of the invention will emerge even more clearly on reading the description and the examples that follow.
Polyoxyalkylenated carboxylic acid ethers and salts thereof The expression “polyoxyalkylenated carboxylic acid ether or salt thereof” preferably means any compound of formula (I) below:
in which:
R represents a linear or branched C
8
-C
22
alkyl or alkenyl radical or mixture of radicals, a (C
8
-C
9
)alkylphenyl radical or a radical R″CONH-CH
2
—CH
2
- with R′ denoting a linear or branched C
11
-C
21
, alkyl or alkenyl radical,
n is an integer or fraction ranging from 2 to 24,
p is an integer or fraction ranging from 0 to 6,
A denotes a hydrogen atom or Na, K, Li, ½ Mg or a monoethanolamine, ammonium or triethanolamine residue.
The polyoxyalkylenated carboxylic acid ethers and salts thereof preferably used according to the present invention are selected from the group consisting of those of formula (I) in which R denotes a (C
12
-C
14
)alkyl, oleyl, cetyl or stearyl radical or mixture of radicals; a nonylphenyl or octylphenyl radical, A denotes a hydrogen or sodium atom, p=0, and n ranges from 2 to 20 and preferably from 2 to 10.
Compounds of formula (I) in which R denotes a (C
12
)alkyl radical, A denotes a hydrogen or sodium atom, p=0 and n ranges from 2 to 10 are even more preferably used.
Among the commercial products that may preferably be used are the products sold by the company Chem Y under the names:
Akypo® NP 70 (R=nonylphenyl, n=7, p=0, A=H)
Akypo® NP 40 (R=nonylphenyl, n=4, p=0, A=H)
Akypo® OP 40 (R=oc
Bebot Cecile
Desenne Patricia
Laurent Florence
Elhilo Eisa
Gupta Yogendra N.
L'Oreal
LandOfFree
Composition useful for the oxidation dyeing of keratin... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition useful for the oxidation dyeing of keratin..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition useful for the oxidation dyeing of keratin... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3341873