Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2001-10-16
2003-11-04
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S078030, C424S063000, C514S772300
Reexamination Certificate
active
06641823
ABSTRACT:
The subject of the present invention is a cosmetic composition comprising, in an aqueous medium, at least one film-forming polymer, at least one nonionic surfactant, and at least one pulverulent coloring matter, intended as make-up for the skin, including the lips. The invention also relates to a method for the application of make-up to the skin, in certain embodiments the skin of human beings. The composition may be provided in the form of an eyeliner, a product for the lips or a make-up product for the body or the face.
Make-up compositions for the skin, in certain embodiments eyeliners, containing, in an aqueous medium, film-forming polymers and pigments are known, for example, FR-A-1504440 and U.S. Pat. No. 4,423,031. Users desire make-up compositions having good homogeneous coverage, i.e. a composition forming a sufficiently colored make-up film to mask the skin to which make-up has been applied. To obtain homogeneous covering, the pigments should be well dispersed in the aqueous medium without forming agglomerates. To properly disperse the pigments in the aqueous medium for the composition, dispersing surfactants have been used; however, some surfactants irritant sensitive skin. Make-up compositions containing these surfactants are not well tolerated by users. Thus, an eyeliner applied to the edge of the eyelids can cause eye discomfort due to the sensation of prickling or burning at the edge of the eyelids which is caused by the irritating surfactants.
The inventors' research sought to provide a make-up composition for the skin, in certain embodiments for the edge of the eyelids, containing at least one film-forming polymer and at least one pulverulent coloring matter in an aqueous medium, which has good covering properties and is well tolerated by sensitive skins and/or eyes.
The inventors have observed that such a composition could be obtained using at least one nonionic surfactant which is chosen from polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates. The use of such surfactants makes it possible to obtain good dispersion of the pulverulent coloring matter in the aqueous medium of the composition. The composition, when applied to the skin, forms a make-up exhibiting good homogeneous coverage. This make-up is, moreover, well tolerated and is therefore suitable as make-up for sensitive eyes.
Embodiments of the invention include make-up cosmetic compositions for the skin comprising, in a cosmetically acceptable aqueous medium, at least one film-forming polymer, at least one nonionic surfactant, and at least one pulverulent coloring matter, wherein the at least one nonionic surfactant is chosen from polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates.
Other embodiments of the invention include methods for the application of make-up to the skin comprising the application, to the skin, of a composition as defined above.
Other embodiments of the invention include methods for the application of make-up to the edge of the eyelids comprising the application, to the edge of the eyelids, of a composition as defined above.
Other embodiments of the invention include uses of a composition as defined above for obtaining a make-up having good coverage and/or which is tolerated by sensitive skins and/or eyes.
Other embodiments of the invention include the use of at least one nonionic surfactant (i.e., polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates), at least one film-forming polymer and at least one pulverulent coloring matter, in a make-up cosmetic composition for the skin comprising a cosmetically acceptable aqueous medium, for obtaining a make-up having good coverage and/or which is tolerated by sensitive skins and/or eyes.
The expression “cosmetically acceptable aqueous medium” can be understood to mean a medium which is compatible with keratinous materials, in particular the skin.
The aqueous medium of the composition may also comprise at least one water-miscible organic solvent, for example C
2
-C
6
monoalcohols such as ethanol or isopropanol. The water-miscible organic solvent, for example a C
2
-C
6
monoalcohol, may be present in an amount ranging from 0.1% to 20% by weight, relative to the total weight of the composition.
The expression “film-forming polymer” can be understood to mean a polymer which is capable of forming, on its own or in the presence of a film-forming aid, a continuous and adherent film on a support, in particular on the skin.
The at least one film-forming polymer present in the composition according to the invention may be chosen from:
proteins such as proteins of plant origin like wheat and soyabean proteins; proteins of animal origin like keratins, for example keratin hydrolysates and sulphonic keratins;
anionic, cationic, amphoteric and nonionic polymers of chitin and chitosan;
cellulose polymers for example hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl hydroxyethyl cellulose, carboxymethyl cellulose, and the quaternized derivatives of cellulose;
acrylic polymers and copolymers, for example polyacrylates and polymethacrylates;
vinyl polymers, such as polyvinylpyrrolidones, copolymers of methyl vinyl ether and maleic anhydride, the copolymer of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate; copolymers of vinylpyrrolidone and caprolactam; polyvinyl alcohol;
polyesters, in some embodiments anionic polyester and/or polyester amide polymers, which are in certain embodiments dispersible in water, comprising monomers carrying a functional group: —SO
3
M, with M chosen from hydrogen atoms, ammonium ions (NH
4
+
) or metal ions, for example Na
+
, Li
+
, K+, Mg
2+
, Ca
2+
, Cu
2+
, Fe
2+
, and Fe
3+
ions. Appropriate polymers include those described in U.S. Pat. Nos. 3,734,874; 4,233,196; and 4,304,901. In certain embodiments, film-forming polyester polymers based on at least one dicarboxylic acid, at least one diol and at least one bifunctional aromatic monomer carrying, in addition, a group —SO
3
M as described above are chosen from;
a polyester having a fatty chain, a polyamide and an epoxy ester resin;
a polyurethane polymer, in certain embodiments anionic, cationic, nonionic and amphoteric polyurethanes, polyurethane-acrylics, polyurethane-polyvinylpyrrolidones, polyester-polyurethanes, polyether-polyurethanes, polyureas, polyurea/polyurethanes;
an optionally modified polymer of natural origin chosen from at least one of:
gum arabic, guar gum, xanthan derivatives, karaya gum;
alginates and carrageenans;
glycoaminoglycans, hyaluronic acid, and its derivatives;
shellac resin, sandarac gum, dammars, elemis, copals;
deoxyribonucleic acid;
mucopolysaccharides such as hyaluronic acid, chondroitin sulphates, and mixtures thereof.
In certain embodiments, the at least one film-forming polymer may be solubilized or dispersed in the aqueous medium of the composition.
The expression “solubilized in the aqueous medium” is understood to mean a polymer soluble in water or in the mixture of water and of solvent as defined above.
The expression “dispersed in the aqueous medium” is understood to mean a polymer insoluble in water or the mixture of water and solvents as defined above, provided in the form of solid particles in dispersion in the aqueous medium. Such dispersions may in some embodiments be a latex, i.e., a dispersion obtained by polymerization in emulsion, or in other embodiments a pseudolatex, i.e., a dispersion obtained by dispersing the polymer already synthesized. Techniques for preparing these dispersions are well understood by those skilled in the art.
In certain embodiments, the at least one film-forming polymer may be present in the composition according to the invention in an amount ranging from 0.5% to 20% by weight, relative to the total weight of the composition, and in certain embodiments ranging from 1% to 15% by weight, relative to the total weight of the composition.
The at least one nonionic surfactant present in the composi
Collin Nathalie
Piot Bertrand
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Howard S.
L'Oreal (S.A.)
Page Thurman K.
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