Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
1997-11-26
2003-11-18
Hartley, Michael G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S059000, C424S063000, C424S064000, C424S070700, C424SDIG005
Reexamination Certificate
active
06649173
ABSTRACT:
The subject of the present invention is a topical composition, in particular a cosmetic composition, which can be provided in the form of a stick or of a supple paste and which is capable of being used for caring for and/or making up the skin, semimucous membranes (such as the lips) and/or mucous membranes (such as the interior of the lower eyelids) of human beings and more especially the lips of the face.
Cosmetic or pharmaceutical compositions, such as lipsticks and foundations, generally comprise fatty substances, such as oils, pasty compounds and waxes, as well as a particulate phase generally composed of fillers and of pigments. They can also contain cosmetic or dermatological active principles (vitamins, screening agents, moisturizers). These compositions, when they are applied on the skin, the mucous membranes or the semimucous membranes, exhibit the disadvantage of transferring. This is understood to mean that the composition is capable of being deposited, at least in part, on certain substrates with which it is brought into contact, such as, for example, a glass, a cup, an item of clothing or the skin. On being deposited, the composition leaves a mark on the substrate. The result is thus a mediocre persistence of the composition on the skin or the mucous membranes, requiring it to be reapplied regularly. Moreover, the appearance of unacceptable marks on certain items of clothing and in particular on the collars of shirts or blouses might dissuade some consumers from using this type of makeup.
Another disadvantage of these compositions lies in the problem of migration. It has been found that certain cosmetic compositions have a tendency to spread into the fine lines and/or wrinkles of the skin, in the case of foundations; into the fine lines which surround the lips, in the case of lipsticks; and into the folds of the eyelid, in the case of eyeshadows. The appearance has also been found, in the case in particular of eyeshadows, of streaks in the makeup, due to the movements of the eyelids.
All these phenomena produce an unsightly effect which it is very clearly desirable to avoid.
For several years, many cosmetic scientists have been interested in “transfer-free” cosmetic compositions, in particular “transfer-free” lipstick or foundation compositions. Thus, Patent Application JP-A-61-65809 envisaged “transfer-free” lipstick compositions containing from 1 to 70% by weight of pulverulent silicone resin with silicate repeating units (or with a three-dimensional network) containing pendant alkylated or phenylated chains, the alkylated chains containing 1 to 6 carbon atoms, from 10 to 98% by weight of a cyclic volatile silicone oil and pulverulent fillers. However, these compositions exhibit the disadvantage of being liquid and thus rather inconvenient to use or at the very least far from the conventional concept of a lipstick in the form of a stick, thus limiting the number of consumers liable to use this type of lipstick. Moreover, the film obtained on the lips after evaporation of the silicone oil exhibits the disadvantage of becoming uncomfortable with time (feeling of desiccation and of tightness).
More recently, “transfer-free” lipsticks containing a cyclic or linear volatile silicone and a silicone resin containing a pendant esterified chain having at least 12 carbon atoms have been envisaged in Patent Application EP-A-602,905. The lipstick film exhibits in particular the disadvantage of lacking comfort on application, in particular of being too dry.
More recently still, the use has been envisaged, in these transfer-free compositions, of silicone resins modified by fluorinated groups (see the document EP-A 661,042). These resins, which are again provided in the pulverulent form, also result in compositions which are not very comfortable, desiccating and tightening the lips or the skin on which they are applied. Moreover, these resins are difficult to employ. Thus, it is preferable to mix them, prior to their use, with a volatile silicone oil, which involves an additional premixing stage, resulting in a significant additional cost during industrial production. Moreover, the necessary presence of a silicone oil in the introduction of the said resin results in an additional formulating constraint.
Generally, it is now known that, while the combination of volatile oils with certain compounds, in particular silicone compounds, makes it possible to obtain a satisfactory “transfer-free” result, it nevertheless exhibits the disadvantage of resulting, after evaporation of the volatile substances, in a film of non-optimum comfort, in particular because it is impossible to add oils other than silicone oils to these compositions while retaining a correct “transfer-free” quality. This is because hydrocarbon oils, which are known to contribute in particular comfort to a cosmetic or dermatological composition, have the disadvantage of increasing the transfer of such a composition.
Now, following in-depth studies, the inventors have demonstrated that, unexpectedly and surprisingly, it was possible to prepare a so-called “transfer-free” cosmetic composition which makes it possible, in particular, to obtain a film which does not transfer and which does not migrate and which exhibits improved cosmetic properties with respect to those of the “transfer-free” products of the prior art, in particular slip, non-tightness, softness and comfort properties.
This composition, with improved comfort with respect to the prior art, makes it possible to limit the transfer and/or the migration of the composition and thus makes it possible to improve the mechanical strength thereof, in particular toward rubbing and/or toward pressure.
A subject of the present invention is thus a topical composition comprising a fatty phase which contains at least one volatile compound, at least one wax and at least one nonvolatile liquid fatty substance,
wherein the fatty phase contains at least one fluorosilicone compound of formula (I):
in which:
R represents, or independently represents, in the case when n is greater than 1, a linear or branched divalent alkylene group having from 1 to 6 carbon atoms, preferably a divalent methylene, ethylene, propylene or butylene group,
Rf represents, or independently represents, in the case when n is greater than 1, a fluoroalkyl radical, in particular a perfluoroalkyl radical, having from 1 to 9 carbon atoms, preferably from 1 to 4 carbon atoms,
R
1
represents, independently of one another, a C
1
-
20
alkyl radical, a hydroxyl radical or a phenyl radical,
m ranges from 0 to 150, preferably from 20 to 100, and
n ranges from 1 to 300, preferably from 1 to 100, and
the non-fluoro, nonvolatile liquid fatty substance(s) and/or non-fluoro wax(es) are selected so as to satisfy the following relationship:
0≦&Dgr;&dgr;≦5
in which:
&Dgr;&dgr;[4×(&dgr;D non-fluoro wax−&dgr;D non-fluoro, nonvolatile liquid fatty substance)
2
+(&dgr;P non-fluoro wax−&dgr;P non-fluoro, nonvolatile liquid fatty substance)
2
+(&dgr;H non-fluoro wax−&dgr;H non-fluoro, nonvolatile liquid fatty substance)
2
]
½
.
In this formula, &dgr;D characterizes the London dispersion forces resulting from the formation of dipoles induced during molecular impacts; &dgr;P characterizes the Debye interaction forces between permanent dipoles; and &dgr;H characterizes the specific interaction forces (hydrogen bond, acid/base, donor/acceptor type and the like.
Another subject of the invention is the use, in a transfer-free topical composition, of a fatty phase as mentioned above, in order to obtain a composition exhibiting good slip, non-tightness, softness and/or comfort properties.
“Transfer-free” composition is understood to mean in particular, in the present description, a composition which does not transfer or transfers only to a very slight extent, that is to say which is not deposited on and/or does not stain and/or does not adhere to a substrate with which it is brought directly into contact. A composition of foundation or tinted cream type which does not st
Arnaud Pascal
Beaumard Sophie
Finnegan Henderson Farabow Garrett & Dunner LLP
Hartley Michael G.
L'Oreal
Lamm Marina
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