Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2000-01-24
2002-02-05
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
Reexamination Certificate
active
06344205
ABSTRACT:
This application claims foreign priority benefit of French Application No. 99/00829, filed Jan. 26, 1999.
The present invention relates to anhydrous cosmetic compositions, in particular cosmetic, dermatological, hygiene or pharmaceutical compositions. These compositions can constitute care products for the skin, including the scalp, and/or make-up products for the skin, mucous membranes (lips or the inside of the eyelids), semi-mucous membranes (lips), keratin fibres (hair, eyelashes, nails) or make-up products for the body.
Make-up compositions containing a fatty phase are commonly used in cosmetics on account of their good adhesion to the epidermis, their comfortable feel, their protective capacity and their capacity to form a water-impermeable film. Anhydrous make-up products are generally in the form of a compact solid or in the form of a cream. Compositions with a creamy consistency may be sought since they can be applied in a satisfactory manner using the fingers, from packaging in the form of a jar or tube. They generally contain oils and waxes in order to obtain a consistency which is stable over time.
However, one of the drawbacks of this type of product is that, due to the fact that they comprise a large amount of fatty substances, they leave the skin feeling greasy and sticky and they are difficult to spread.
The aim of the present invention is to provide an anhydrous composition, in particular in the form of a cast product, which has improved cosmetic properties and good stability. In particular, what is sought is a composition which does not give a greasy or sticky feel when applied, but which nevertheless feels soft and comfortable on the skin.
It has now been discovered, surprisingly and unexpectedly, that by using a specific fatty ester combined with pulverulent compounds in specific proportions, it is possible to obtain anhydrous compositions which spread easily on the skin, which do not feel greasy or sticky, and which have excellent cosmetic properties, in particular very great softness and good stability.
One subject of the present invention is thus an anhydrous composition, in particular a cosmetic, dermatological, hygiene or pharmaceutical composition, comprising i) at least one oily phase comprising isononyl isononanoate, and ii) at least one particulate phase comprising pulverulent compounds, characterized in that the isononyl isononanoate is present in a content of at least 10% by weight, relative to the total weight of the composition, the pulverulent compounds are present in a content of at least 10% by weight, relative to the total weight of the composition, and the oily phase also comprises a silicone oil, the said silicone oil being present in a content of greater than or equal to 5% by weight, relative to the total weight of the composition.
The invention also relates to a non-therapeutic treatment process for the skin and/or the scalp, in particular a make-up process, which consists in applying a composition as defined above to the skin or mucous membranes and/or to the scalp.
It has been found that the composition used according to the invention is particularly soft: it can be applied and spread easily and homogeneously, without leaving a greasy or sticky feel. It also has a light texture and remains comfortable to wear throughout the day.
The composition according to the invention moreover has good sensory and cosmetic qualities, in particular a good matt effect and good covering power, uniformity and staying power.
The anhydrous composition according to the invention gives a uniform, homogeneous make-up result.
Furthermore, when applied to the skin, it has the advantage of not migrating in the folds of the skin and/or in the wrinkles of the face.
The compositions of the invention are anhydrous compositions. In general, an anhydrous composition is a composition comprising less than 3% by weight of water, relative to the total weight of the composition, preferably less than 1% of water. Even more preferably, the composition comprises no water at all.
The compositions according to the invention comprise an oily phase which comprises at least 10% by weight, relative to the total weight of the composition, of a liquid fatty ester which is isononyl isononanoate. In one embodiment of the present invention, the oily phase comprises greater than 10% by weight of a liquid fatty ester which is isononyl isononanoate, relative to the total weight of the composition. An oily phase generally refers to a phase comprising fatty substances which are liquid at room temperature.
In one embodiment of the present invention, the isononyl isononanoate is present in the compositions according to the invention in a content which can range from 10 to 40% by weight, relative to the total weight of the composition. More preferably, this content ranges from 15 to 35% by weight relative to the total weight of the composition.
As commercial products corresponding to isononyl isononanoate, mention may be made of Wickenol 151 sold by the company Caschem, “Dermol 99” sold by the company Alzo or “Lanol 99” sold by the company SEPPIC.
The composition according to the invention also comprises at least one silicone oil present in a content of greater than or equal to 5% by weight relative to the total weight of the composition. In one embodiment of the present invention, the content of silicone oil ranges from 5 to 55%, more preferably from 5 to 25%, by weight and even more preferably from 10 to 25% by weight, relative to the total weight of the composition.
The silicone oil which can be used according to the invention can be chosen from:
cyclic volatile silicones containing from 3 to 8 silicon atoms, preferably 4 to 6 atom, such as, for example, cyclotetradimethylsiloxane, cyclopentadimethylsiloxane or cyclohexadimethylsiloxane; in particular the products sold under the names “DC Fluid 244”, “DC Fluid 245”, “DC Fluid 344” and “DC Fluid 345” by the company Dow Corning,
linear volatile silicones containing from 2 to 9 silicon atoms, for example hexamethyldisiloxane, hexylheptamethyltrisiloxane and octylheptamethyltrisiloxane;
the polydimethylsiloxanes of the general formula below:
in which:
X is -CH
3
or OH, and
n is an integer ranging from 0 to 2000,
and preferably those in which the viscosity at 25° C. is less than or equal to 0.06 m
2
/s, among which mention may be made of those sold under the name “Dow Corning Fluid 200” by the company Dow Corning; mention may also be made in particular of the products sold under the name “AK” by the company Wacker, “SF” by the company General Electric and “Abil” by the company Goldschmidt, such as the product “Abil 10”,
alkylmethylpolysiloxanes and in particular poly(C
1
-C
20
)alkylsiloxanes such as phenylsilicone oils or cetyldimethicone (CTFA name);
cyclocopolymers of the dimethylsiloxane/methylalkylsiloxane type, such as “silicone FZ 3109”, sold by the company Union Carbide, which is a dimethylsiloxane/methyloctylsiloxane cyclocopolymer;
silicone gums which are optionally phenylated or hydroxylated polysiloxanes, with a high molecular mass of about 200,000 to 1,000,000 and with a viscosity of greater than 500,000 mPa.s, when they are dissolved in a solvent such as a polydimethylsiloxane or polyphenylsiloxane oil, or a cyclomethicone,
silicone resins comprising a combination of units R
3
SiO
1/2
, R
2
SiO
2/2
, RSiO
3/2
and SiO
4/2
, in which R is hydrogen, a C
1
-C
6
alkyl radical or a phenyl radical, when they are dissolved in a solvent such as a polydimethylsiloxane or polyphenylsiloxane oil, or a cyclomethicone,
and/or mixtures thereof.
In one embodiment, the composition according to the invention is free of phenyltrimethicone.
The oily phase can also comprise oils other than isononyl isononanoate and silicone oils. Among the other oils which can be used according to the present invention, mention may be made of:
fatty esters other than isononyl isononanoate, such as:
branched C
8
-C
16
esters, such as isohexyl neopentanoate;
synthetic esters, such as oils of formula R
1
COOR
2
in which R
1
represents a higher fatty acid r
Clavel Euriel
Grimm Sabine
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Howard S.
L'Oreal (S.A.)
Page Thurman K.
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