Drug – bio-affecting and body treating compositions – Manicure or pedicure compositions
Reexamination Certificate
1998-12-28
2001-06-26
Dudash, Diana (Department: 1619)
Drug, bio-affecting and body treating compositions
Manicure or pedicure compositions
C424S064000, C424S069000, C424S070700, C424S063000, C424S401000, C424S059000
Reexamination Certificate
active
06251375
ABSTRACT:
The present invention relates to the use of a certain class of volatile organic polyhalogen compounds, in which the halogen atom is fluorine, in cosmetic compositions for makeup, sun protection or nailcare, in order to accelerate their drying time.
The problem associated with the drying of cosmetic products following their application is of great importance for users.
In fact, a product which has a slow drying rate is generally not very well accepted, whether it be a foundation, a lipstick or a nailcare product.
Moreover, the rate of drying must not be too rapid, since in that case it would be liable to produce unattractive shrinkage phenomena.
Although various studies have been carried out with a view to improving the drying time of cosmetic compositions, especially makeup compositions, no satisfactory solution has been proposed.
Following numerous studies on various types of compound it has surprisingly and unexpectedly been found that by using a certain class of volatile organic polyhalogen solvents in which the halogen atom is fluorine it was possible to bring about in a particularly satisfactory and effective manner an improvement in the drying time of cosmetic compositions.
In fact, the use of these solvents, referred to below as volatile polyfluorinated solvents has been found to enable particularly rapid drying to be obtained following application of the composition to the skin, which is not the case with the prior art compositions.
Another particularly important advantage is to be able to obtain the compositions in perfect safety in so far as the volatile polyfluorinated solvents do not have a flash point, which makes it possible to prepare compositions at high temperature and therefore has a certain advantage when the melting point of the substances used is greater than room temperature.
Finally, the use of volatile polyfluorinated solvents facilitates the incorporation into compositions of high concentrations of non-volatile fluorinated derivatives, the latter being completely miscible with the volatile polyfluorinated solvents. Hence it is possible to obtain a residual film which is highly fluorinated, has a glossy or satin finish, and is resistant to water and fatty substances.
The present invention therefore provides for the use in a cosmetic makeup, sun protection or nailcare composition of at least one organic polyhalogen solvent as a drying accelerator, the halogen atom being fluorine and the said solvent having a vapour pressure of more than 20 mbar (2000 Pa) at 25° C. and preferably more than 40 m bar (4000 Pa).
Among the volatile polyfluorinated solvents which can be used as drying accelerators and which meet the abovementioned vapour pressure criterion mention may be made in particular of:
1) perfluorocycloalkyl compounds of the formula (I):
in which
n is 3, 4, or 5
m is 1 or 2, and
p is 1, 2 or 3
with the proviso that when m=2 the groups are not necessarily in the alpha position with respect to one another,
2) fluoroalkyl or heterofluoroalkyl compounds of the formula (II):
CH
3
—(CH
2
)
n
—[Z]
t
—X—CF
3
(II)
in which:
t is 0 or 1,
n is 0, 1, 2 or 3,
X is a linear or branched divalent perfluoroalkyl radical having 2 to 5 carbon atoms, and
Z represents O, S or NR, where R is hydrogen or a radical —(CH
2
)
n
—CH
3
or —(CF
2
)
m
—CF
3
, where m is 2, 3, 4 or 5,
3) perfluoroalkane compounds of the formula (III):
CF
3
—(CF
2
)
n
—CF
3
(III)
in which:
n is from 2 to 6, and
4) perfluoromorpholine derivatives of the formula (IV):
in which:
R is a C
1
-C
4
perfluoroalkyl radical.
Among the perfluorocycloalkyls of formula (I) mention may be made in particular of perfluoromethylcyclopentane and perfluorodimethylcyclohexane, which are sold, respectively, under the names FLUTEC PC1® and FLUTEC PC3® by the company BNFL FLUOROCHEMICALS Ltd., and perfluorodimethylcyclobutane.
Among the fluoroalkyl or heterofluoroalkyl compounds of formula (II) mention may be made in particular of methoxynonafluorobutane, which is sold under the name HFE-7100® by the 3M Company, or ethoxynonafluorobutane, which is sold under the name HFE-7200® by the company ARCHIMEX.
Among the perfluoroalkane compounds of formula (III) mention may be made in particular of dodecafluoropentane and tetradecafluorohexane.
Among the perfluoromorpholine derivatives of formula (IV) mention may be made in particular of 4-trifluoromethylperfluoromorpholine and 4-pentafluoroethylperfluoromorpholine.
The volatile polyfluorinated solvents as defined above must also meet the criterion of the boiling point, which must be between 20 and 75° C. and preferably between 25 and 65° C.
Within the compositions according to the invention the proportion of volatile polyfluorinated solvent is generally between 2 and 98% by weight but preferably between 5 and 70% by weight relative to the total weight of the composition.
According to one preferred embodiment of the invention the compositions comprise particles of pigment and/or of dye and/or of filler.
The pigments of the compositions according to the invention, and the dyes and fillers, are in the form of very fine particles having an average particle size of between approximately 0.02 and 50 &mgr;m.
The pigments of the compositions may be inorganic or organic or else may be in the form of metal lakes. Among these pigments mention may be made of titanium dioxide, zinc oxide, D&C Red No. 36 and D&C Orange No. 17, calcium lakes of D&C Red No. 7, 11, 31 and 34, barium lake of D&C Red No. 12, D&C Red No. 13 strontium lake, aluminium lakes of FD&C Yellow No. 5, of FD&C Yellow No. 6, of D&C Red No. 27, of D&C Red No. 21 and of FD&C Blue No. 1, iron oxides, manganese violet, chromium oxide and ultramarine blue.
The fillers may be of natural or synthetic origin. Among these mention may be made in particular of:
a) mineral powders such as talc, kaolin, mica, silica, silicates, alumina, zeolites, hydroxyapatite, sericite, titanium micas, barium sulphate, bismuth oxychloride, boron nitride and metal powders such as aluminium powder;
b) vegetable powders, such as starch, maize, wheat or rice powders;
c) organic powders, such as nylon, polyamide, polyester, polytetrafluoroethylene or polyethylene powders.
Moreover, these various powders may be coated, for example with metal salts of fatty acids, amino acids, lecithin, collagen, silicone compounds, fluorinated compounds, or with any other customary coating.
Among the dyes mention may be made of eosine derivatives, such as D&C Red No. 21, and halogenated fluorescein derivatives, such as D&C Red No. 27, D&C Orange No. 5 in combination with D&C No. 21 and D&C Orange No. 10.
Depending on the compositions, the dyes may be in particle form or may be in a form in which they are solubilized in the vehicle of the composition.
Within the compositions according to the invention the proportion of at least one pigment and/or dye is generally between approximately 0.1 and 15% by weight relative to the total weight of the composition.
The fillers may generally be present in a maximum proportion of approximately 98% by weight relative to the total weight of the composition.
According a first particular embodiment of the compositions according to the invention, the latter are anhydrous and comprise a fatty phase in a proportion of between approximately 0.3 and 90% by weight relative to the total weight of the composition.
The fatty phase generally consists of one or more fatty substances, which may be selected from oils, waxes, gums and/or so-called pastelike fatty substances.
A—The oils of the fatty phase may be mineral, animal, vegetable or synthetic in origin, and these may be volatile or non-volatile at ambient temperature.
As oils of mineral origin mention may be made in particular of liquid paraffin and liquid petroleum.
As oils of animal origin mention may be made in particular of squalane or perhydrosqualene.
As oils of vegetable origin mention may be made in particular of sweet almond oil, calophyllum oil, palm oil, avocado oil, jojoba oil, sesame oil, olive oil, castor oil, and cereal germ oils such as, f
Berman Alysia
Dudash Diana
L'Oreal
Nixon & Vanderhye P.C.
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