Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2002-01-30
2003-04-22
Kopec, Mark (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S119000, C510S121000, C510S123000, C510S124000, C510S125000, C510S127000, C510S129000, C510S159000, C510S405000, C510S426000, C510S433000, C510S466000, C510S481000, C510S493000, C510S504000, C134S042000, C424S070500, C424S070120, C424S070122, C424S070190, C424S070210, C424S070220, C424S070240, C424S070280
Reexamination Certificate
active
06551970
ABSTRACT:
The present invention relates to new cosmetic compositions having improved properties, intended simultaneously for cleansing and conditioning the hair, and comprising, in a cosmetically acceptable vehicle, a washing base consisting of particular surfactants having detergent power, in which base are also present, as conditioning agents, particular cationic polymers in combination with particular insoluble silicones. The invention also relates to the use of the said compositions in the abovementioned cosmetic application.
For cleansing and washing the hair, the use of detergent hair-care compositions (or shampoos) based essentially on traditional surfactants, in particular of the anioic, nonionic and/or amphoteric type, but more especially of the anionic type, is common. These compositions are applied to wet hair, and the lather generated by massage or friction with the hands makes it possible, after rinsing with water, to remove the various kinds of soil initially present on the hair.
These base compositions admittedly possess good washing power, but the intrinsic cosmetic properties which are associated with them remain, however, rather poor, in particular on account of the fact that the relatively aggressive nature of such a cleansing treatment can lead eventually, on the hair fibre, to more or less pronounced damage, linked especially to the progressive removal of the lipids or proteins contained in or at the surface of the fibre.
Thus, in order to improve the cosmetic properties of the above detergent compositions, and more especially of those which are required for application to sensitized hair (i.e. hair which is damaged or weakened, in particular through the chemical action of environmental agents and/or of hair treatments such as permanent-waving, dyeing or bleaching), it is now usual to introduce into these compositions supplementary cosmetic agents termed conditioning agents, intended mainly to rectify or limit the harmful or undesirable effects induced by the various treatments or types of attack to which the hair fibres are subjected more or less repeatedly. These conditioning agents can, of course, also improve the cosmetic behaviour of natural hair.
The conditioning agents most commonly used to date in shampoos are cationic polymers, silicones and/or silicone derivatives which, in effect, impart to the washed, dry or wet hair an ease of disentangling, softness and a smoothness which are markedly enhanced in comparison to what can be obtained with the corresponding cleansing compositions which do not contain them.
On sensitized hair, in order to obtain the cosmetic effects of silicones over the entire length of the hair fibre, it is preferable to use combinations of silicones and cationic polymers.
However, and in spite of the progress recently made in the field of shampoos based on cationic polymers and silicones, these latter do not really prove completely satisfactory, so that there is still at the present time a strong need to be able to have at one's disposal new products displaying improved performance in respect of one or more of the cosmetic properties mentioned above.
The present invention is directed towards meeting this need.
Thus, following a considerable amount of research conducted on this topic, it has now been found by the Applicant, completely unexpectedly and surprisingly, that, by using a particular washing base, namely a washing base combining at least one anionic type surfactant and at least one amphoteric surfactant of the C
10
-C
14
alkylbetaine type, simultaneously comprising, in addition, particular, appropriately selected silicones as are defined below, and particular cationic polymers, namely guar gums, as conditioning agents, it is possible to obtain detergent compositions displaying excellent cosmetic properties, especially in respect of the ease of styling, the hold, the liveliness, the smoothness and the suppleness of the treated hair, as well as very good intrinsic washing power.
While there is no wish to limit the present invention to a theory of any kind, there would appear to exist, between the cationic polymer, the silicone, the anionic surfactant and the amphoteric surfactant, which are according to the invention, and the hair, particular affinities and/or interactions which favour an even, substantial and lasting deposition of the said silicone and/or the said cationic polymer at the surface of the said hair, this qualitative and quantitative deposition probably being one of the causes of the observed improvement in respect of the final cosmetic properties, especially the ease of disentangling of the wet or dried hair, the ease of styling and the smoothness from the root to the end of the treated hair. Be that as it may, the cosmetic properties associated with the compositions comprising an anionic surfactant, an amphoteric surfactant of the alkylbetaine type and the combination of conditioning agents [cationic guar gum/specific silicone] according to the invention are markedly superior to those which can be obtained employing compositions not comprising the simultaneous presence of all these essential compounds.
All these discoveries underlie the present invention.
Thus, according to the present invention, provision is now made for new detergent and conditioning hair-case compositions comprising, in a cosmetically acceptable medium, (A) a washing base comprising at least one anionic surfactant and at least one amphoteric surfactant of the C
10
-C
14
alkylbetaine type, and (B) a conditioning system comprising at least one cationic guar gum and at least one insoluble silicone of viscosity less than or equal to 350 Pa.s (350,000 cSt), chosen from:
(i) polydialkylsiloxanes, (ii) polydiarylsiloxanes and (iii) polyalkylarylsiloxanes, the said silicone being introduced into the composition in non-emulsified form.
The subject of the invention is also the use in cosmetics of the above compositions for cleansing and conditioning the hair.
However, other characteristics, aspects and advantages of the invention will become still more clearly apparent on reading the description which follows, as well as the specific but in no way limiting examples designed to illustrate it.
As stated above, the essential constituents participating in the composition of the hair-case products of the invention are (A) a washing base comprising at least one anionic detergent surfactant and (ii) at least one amphoteric surfactant of the C
10
-C
14
alkylbetaine type and (B) a conditioning system comprising (i) the cationic guar gum or gums and (ii) the insoluble silicone or silicones.
A—WASHING BASE:
The compositions according to the invention necessarily comprise a washing base, which is generally aqueous.
The surfactant or surfactants forming the washing base comprise one or more anionic surfactants and one or more amphoteric C
10
-C
14
alkylbetaine surfactants.
The minimum amount of washing base is that which is just sufficient to impart a satisfactory lathering and/or detergent power to the final composition, and excessively large amounts of washing base do not really provide any additional advantages.
Thus, according to the invention, the washing base can represent from 4% to 50% by weight, preferably from 10% to 35% by weight and still more preferably from 12% to 25% by weight of the total weight of the final composition.
According to a preferred characteristic of the hair-care compositions according to the present invention, the washing base does not contain surfactants other than anionic surfactants and amphoteric surfactants of the C
10
-C
14
alkylbetaine type.
(i) Anionic surfactant(s):
In the context of the present invention, the nature of these does not actually assume critical importance.
Thus, as an example of anionic surfactants which can be used, alone or mixed, in the context of the present invention, there may be mentioned, in particular (non-limiting list), the salts (especially alkali metal salts, in particular sodium salts, ammonium salts, amine salts, salts of amino alcohols or magnesium salts) of the following c
Beauquey Bernard
Decoster Sandrine
Finnegan Henderson Farabow Garrett & Dunner LLP
Kopec Mark
L'Oreal
Mruk Brian P.
LandOfFree
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