Drug – bio-affecting and body treating compositions – Manicure or pedicure compositions
Reexamination Certificate
1998-06-25
2001-03-20
Dudash, Diana (Department: 1619)
Drug, bio-affecting and body treating compositions
Manicure or pedicure compositions
C424S064000, C424S070120, C424S401000, C514S063000
Reexamination Certificate
active
06203780
ABSTRACT:
The present invention relates to a cosmetic or dermatological composition containing a fluorosilicone with an alkyl chain, as an ingredient capable of enhancing various essential properties thereof.
It has already been proposed to use fluoro compounds in cosmetic compositions for their film-forming properties, as well as for their properties of softness and of remanence with respect to water.
Thus, EP-390,206 and EP-494,412 have described the use of hydrocarbon-based perfluoropolymers in various types of cosmetic compositions. However, these hydrocarbon-based perfluoropolymers have a relatively restricted spectrum of chemical compatibility, in particular with fatty substances, which thus limits the choice of starting materials with which they can be combined, and the nature of the compositions containing them. Furthermore, they can only be present in a relatively low proportion in cosmetic compositions.
JP-7-103,582 and JP-2-295,913 have also proposed the use of fluorosilicones in cosmetic compositions, but these also have relatively restricted compatibility spectra, which likewise limits the choice of ingredients with which they can be combined, as well as the proportions in which they can be present in the compositions.
It has now been discovered that a particular family of fluorosilicones, namely fluorosilicones containing a C
6
-C
22
alkyl chain (referred to hereinbelow as fluoroalkylsilicones), has properties that are advantageous in terms of cosmetic or dermatological use. In particular, fluoroalkylsilicones can be good film-forming agents, leading, after application, to the formation of a film which is, at the same time, homogeneous, continuous, remanent with respect to water and which also has an excellent compromise between its durability and its ease of removal. The fluoroalkylsilicones of the compositions according to the invention also constitute lubricants, as well as very satisfactory binders.
Furthermore, these fluoroalkylsilicones have a much wider compatibility spectrum than fluoro compounds such as the fluorosilicones and perfluoroethers described in the prior art, thereby making it possible to prepare compositions using substances which could not be used hitherto.
They can also be introduced into compositions in a larger proportion without, however, affecting their homogeneity or their other properties, but, quite to the contrary, enhancing them.
The subject of the present invention is thus a cosmetic or dermatological composition containing, as ingredient, at least one fluoroalkylsilicone corresponding to one of the formulae (I) and/or (II) below:
in which:
R
1
and R′
1
independently represent a linear or branched alkyl radical having from 1 to 6 carbon atoms or a phenyl radical,
R
2
represents R
1
, —OH or —(CH
2
)
f
—RF, f being an integer ranging from 0 to 10,
R
3
represents a linear or branched alkyl radical having from 6 to 22 carbon atoms,
R
F
represents a radical of formula —(CF
2
)
q
—CF
3
, q being an integer ranging from 0 to 10,
m and n represent an integer ranging from 1 to 50, and
p represents an integer ranging from 0 to 2000,
in which:
R
4
represents a linear or branched alkyl radical having from 1 to 6 carbon atoms, or a phenyl radical,
R
5
represents a linear or branched alkyl radical having from 6 to 22 carbon atoms,
R′
F
represents a radical of formula —(CF
2
)
s
—CF
3
, s being an integer ranging from 0 to 15, and
t represents an integer ranging from 1 to 2000.
According to a particular embodiment of the cosmetic compositions according to the invention, the fluoroalkylsilicone corresponds to formula (I) in which:
R
1
, R′
1
and R
2
represent a methyl radical,
R
3
represents a linear alkyl radical having from 6 to 22 carbon atoms,
m and n are integers ranging from 1 to 20, and
q is an integer ranging from 1 to 13.
According to another embodiment of the compositions according to the invention, the fluoroalkylsilicone corresponds to formula (II) in which:
R
4
represents a methyl radical,
R
5
represents a linear alkyl radical having from 6 to 22 carbon atoms, and
s represents an integer ranging from 1 to 13.
The fluoroalkylsilicones as defined above are known compounds which have been described in particular in U.S. Pat. No. 5,473,038.
In the compositions according to the invention, the fluoroalkylsilicone as defined above is generally present in a proportion ranging from 0.1 to 99% by weight, but preferably from 1 to 80% by weight, relative to the total weight of the composition.
According to a first particular embodiment of the invention, the compositions are anhydrous and comprise a fatty phase in a proportion ranging from 0.1 to 99.9% by weight relative to the total weight of the composition, the said fatty phase containing:
(i) from 0.1 to 99.9% by weight, relative to the total weight of the said composition, of a fluoroalkylsilicone of formula (I) and/or (II), and
(ii) from 0 to 99.8% by weight, relative to the total weight of the said composition, of at least one liquid, solid or semisolid fatty substance.
This or these fatty substance(s) can be selected from oils, waxes, gums and/or so-called pasty fatty substances.
A—The oils of the fatty phase can be of mineral, animal, plant or synthetic origin, it being possible for these oils to be volatile or non-volatile at room temperature.
As oils of mineral origin, mention may be made in particular of liquid paraffin and liquid petroleum jelly.
As oils of animal origin, mention may be made in particular of squalane or perhydrosqualene.
As oils of plant origin, mention may be made in particular of sweet almond oil, beauty-leaf oil, palm oil, avocado oil, jojoba oil, sesame oil, olive oil, castor oil and cereal germ oils such as, for example, wheatgerm oil.
As synthetic oils, mention may be made in particular of:
(1) esters of formula:
R
6
—COOR
7
in which:
R
6
represents the residue of a higher fatty acid having from 7 to 20 carbon atoms and
R
7
represents a hydrocarbon-based radical having from 3 to 30 carbon atoms.
Among these esters, mention may be made in particular of: purcellin oil, butyl myristate, isopropyl myristate, cetyl myristate, isopropyl palmitate, butyl stearate, hexadecyl stearate, isopropyl stearate, octyl stearate, isocetyl stearate, decyl oleate, hexyl laurate, isononyl isononanoate, esters derived from lanolic acid, such as isopropyl lanolate and isocetyl lanolate.
As other synthetic oils, mention may also be made of isododecane, isohexadecane, polyisobutenes and hydrogenated polyisobutene, as well as acetyl glycerides, octanoates and decanoates of polyalcohols such as those of glycol and of glycerol, ricinoleates of alcohols and of polyalcohols such as that of cetyl alcohol, propylene glycol dicaprylate and diisopropyl adipate;
(2) fatty alcohols such as oleyl alcohol, linoleyl alcohol, linolenyl alcohol, isostearyl alcohol and octyldodecanol;
(3) silicone oils such as linear, optionally functionalized polydiorganosiloxanes, cyclic polydiorganosiloxanes and in particular cyclotetra- and penta-dimethicones and organopolysiloxanes such as alkyl-, alkoxy- or phenyl-dimethicones and in particular phenyltrimethicone;
(4) fluoro oils such as perfluoroalkanes and perfluoropolyethers and partially fluorinated hydrocarbon-based oils.
B—Waxes of the fatty phase can be of mineral, fossil, animal, plant or synthetic origin or alternatively can be hydrogenated oils or fatty esters that are solid at 25° C.
Among the mineral waxes, mention may be made in particular of microcrystalline waxes, paraffin, petroleum jelly and ceresine.
Among the fossil waxes, mention may be made of ozokerite and montan wax.
Among the waxes of animal origin, mention may be made of beeswax, spermaceti, lanolin wax and lanolin derivatives such as lanolin alcohols, hydrogenated lanolin, hydroxylated lanolin, acetylated lanolin, lanolin fatty acids and acetylated lanolin alcohol.
Among the waxes of plant origin, mention may be made in particular of candelilla wax, carnauba wax, Japan wax and cocoa butter.
Among the synthetic waxes, mention may be made in particular of ethyl
Arnaud Pascal
Bara Isabelle
Berman Alysia
Dudash Diana
L'Oreal
Nixon & Vanderhye P.C.
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