Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-06-09
2002-07-09
Hardee, John (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S127000
Reexamination Certificate
active
06417145
ABSTRACT:
The present invention relates to novel cosmetic compositions with improved properties, intended both for cleaning and conditioning keratin substances such as the hair and the skin, and comprising, in a cosmetically acceptable vehicle, a washing base comprising alkyl ether sulphate surfactants with detergent power, in which cationic polymers selected from homopolymers of the diallyldimethylammonium family in combination with non-amino silicones are also present as conditioners. The invention also relates to the use of the compositions in the abovementioned cosmetic application.
It is common to use detergent compositions (shampoos or shower-gels) based essentially on standard surfactants of anionic, nonionic and/or amphoteric type in particular, but more particularly of anionic type, to clean and/or wash the hair and/or the skin. These compositions are applied to wet hair and the lather generated by massaging or rubbing with the hands removes, after rinsing with water, the various types of soiling which are initially present on the hair.
Admittedly these base compositions are of good washing power, but the intrinsic cosmetic properties associated with them nevertheless remain fairly poor, owing in particular to the fact that the relatively aggressive nature of such a cleaning treatment can, in the long run, lead to more or less pronounced damage to the hair fiber, this damage being associated in particular with the gradual removal of the lipids or proteins contained in or on the surface of this fiber.
Thus, in order to improve the cosmetic properties of the above detergent compositions, and more particularly those which are to be applied to sensitized hair (i.e. hair which has been damaged or made brittle, in particular under the chemical action of atmospheric agents and/or hair treatments such as permanent-waving, dyeing or bleaching), it is now common to introduce additional cosmetic agents known as conditioners into these compositions, these conditioners being intended mainly to repair or limit the harmful or undesirable effects induced by the various treatments or aggressions to which the hair fibers are subjected more or less repeatedly. These conditioners may, of course, also improve the cosmetic behaviour of natural hair.
The conditioners most commonly used to date in shampoos are cationic polymers, silicones and/or silicone derivatives, which give washed, dry or wet hair an ease-of disentangling, softness and smoothness which are markedly better than that which can be obtained with corresponding cleaning compositions from which they are absent. In addition, on sensitized hair, it is known to use, preferably, a mixture of silicone and cationic polymer.
However, despite the progress made recently in the field of shampoos based on silicones and cationic polymers, these shampoos are not really completely satisfactory, and as such a strong need still exists currently as regards being able to provide novel products which give better performance with respect to one or more of the cosmetic properties mentioned above.
Thus, after considerable research conducted in this matter, the inventors have now found, entirely surprisingly and unexpectedly, that by using a specific and suitably selected silicone, as defined above, in detergent compositions containing specific cationic polymers as conditioners, it is possible to substantially and significantly improve the cosmetic properties associated with these compositions, while at the same time retaining their good intrinsic washing power.
The compositions in accordance with the invention give hair, after rinsing, a noteworthy treating effect which is manifested in particular by an ease of disentangling, as well as giving the hair volume and making it light, smooth, soft and supple.
Thus, according to the present invention, novel detergent conditioning compositions are now proposed, comprising, in a cosmetically acceptable medium, (A) a washing base comprising at least one anionic surfactant of alkyl ether sulphate type and (B) a conditioning system comprising at least one insoluble non-amino silicone and at least one cationic polymer selected from homopolymers containing, as main constituents of the chain, units corresponding to formula (I) or (I′):
in which:
k and tare equal to 0 or 1, the sum k+t being equal to 1;
R
3
independently denotes a hydrogen atom or a methyl radical;
R
1
and R
2
independently denote an alkyl group having from 1 to 22 carbon atoms, a hydroxyalkyl group in which the alkyl group preferably has 1 to 5 carbon atoms, a lower (1 to 5 carbon atoms) amido alkyl group, or R
1
and R
2
can denote, together with the nitrogen atom to which they are attached, heterocyclic groups such as piperidyl or morpholinyl;
Y
−
is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulphate, bisulphite, sulphate or phosphate.
The subject of the invention is also the cosmetic use of the above compositions for cleaning and/or conditioning keratin substances such as the hair and the skin.
However, other characteristics, aspects and advantages of the invention will emerge even more clearly on reading the description which follows, as well as the concrete, but in no way limiting, examples intended to illustrate it.
A-washing Base
The compositions in accordance with the invention necessarily comprise a washing base, which is generally aqueous, comprising at least one or more anionic surfactants of alkyl ether sulphate type.
The minimum amount of washing base is that which is just sufficient to give the final composition a satisfactory foaming power and/or detergent power, and excessive amounts of washing base do not really afford additional advantages.
Thus, according to the invention, the washing base can represent preferably from 2% to 50% by weight, more preferably from 1.0% to 35% by weight and even more preferably from 12% to 25% by weight, of the total weight of the final composition.
The anionic surfactants of alkyl ether sulphate type which can preferably be used, alone or as mixtures, in the context of the present invention are salts (in particular alkaline salts, especially sodium salts, ammonium salts, amine salts, amino alcohol salts or magnesium salts) of alkyl ether sulphates, alkylamido ether sulphates, alkylaryl ether sulphates or alkyl ether sulphosuccinates, the alkyl radical of all these various compounds preferably containing from 8 to 24 carbon atoms, and the aryl radical preferably denoting a phenyl or benzyl group.
The average number of ethylene oxide or propylene oxide groups can range in particular from 2 to 50 and more particularly from 2 to 10.
Among these anionic surfactants, C
8
-C
14
and more particularly C
12
-C
14
alkyl ether sulphate salts are preferably used. These salts comprise in particular from 2 to 5 ethylene oxide groups.
The anionic surfactants are generally present in a proportion preferably of from 1 to 50% by weight, more preferably from 5 to 20% by weight, relative to the total weight of the composition.
In the compositions in accordance with the invention, mixtures of surfactants are preferably used, in particular mixtures of anionic surfactants or mixtures of anionic surfactants and of amphoteric or nonionic surfactants. A mixture which is particularly preferred is a mixture comprising at least one anionic surfactant and at least one amphoteric surfactant.
The nonionic surfactants are compounds that are well known per se (see in particular in this respect “Handbook of Surfactants” by M. R Porter, published by Blackie & Son (Glasgow and London), 1991, pp. 116-178), the disclosure of which is specifically incorporated by reference herein, and, in the context of the present invention, their nature is not a critical feature. Thus, they can be selected in particular from (non-limiting list) polyethoxylated, polypropoxylated or polyglycerolated fatty acids, alkylphenols, &agr;-diols or alcohols having a fatty chain containing, for example, 8 to 18 carbon atoms, it being possible for the number of ethylene oxide or propylene oxide groups to range in part
Beauquey Bernard
Decoster Sandrine
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Hardee John
L'Oreal
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